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  1. ProPERLA Set In Motion Further Testing

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    ProPERLA is delighted to announce that we have set in motion the process of rigorous independent testing on ProPERLA roof treatments and wood impregnator, in line with the substantial testing that ProPERLA wall coatings have undergone. 

    Previous testing conducted by Lucideon

    Back in November 2018, ProPERLA approached UKAS accredited laboratory Lucideon to carry out independent testing on ProPERLA wall coatings, specifically ProPERLA Facade Coating and ProPERLA Masonry Creme. 

    Lucideon with their world leading testing facility were tasked with scientifically and impartially testing ProPERLA wall coatings to ensure they are fit for purpose and conform to regulations. 

    Specifically, the tests were conducted to;

    • determine performance after 25 years of accelerated weathering
    • test and analyse thermal insulating properties
    • test and analyse breathability
    • test and analyse the super hydrophobic (highly water repellent) properties of the coatings

    The results of the the test were that ProPERLA wall coatings passed each of the four parameters, achieving the following quality standards:

    • EAD 090062-00-0404 – 25 year hygrothermal performance
    • EAD 040083-00-0404 – External thermal insulation composite
    • BS EN ISO 7783:2011 -  Water vapour diffusion
    • BS EN ISO 12572 - Water vapour resistance

    Independent UKAS accredited testing

    Following the outstanding success of independent testing on ProPERLA wall coatings, we are now beginning the process of having the following products tested:

    1. RENOTEC Roof Coating
    2. ProPERLA Water Repellent
    3. ProPERLA Wood Impregnator

    These products will be tested for their durability (lifespan), ability to prevent moisture penetration and breathability. RENOTEC Roof Coating will also have it's colour fastness tested to identify the coating's ability to maintain its colour and resist UV degradation.

    Lucideon will be developing a custom made roof structure in order to replicate as close as possible the conditions of roof tiles, allowing Lucideon to test the practical performance of ProPERLA roof treatments on roof tiles.

    A wooden structure will also be developed in order to identify the performance of ProPERLA Wood Impregnator as a clear, water repellent treatment for preventing the degradation & discolouration of timber surfaces.

    We are delighted to announce this news to ProPERLA approved applicators and homeowners as we believe this testing will further validate the superior performance of ProPERLA's super hydrophobic technology. 

    The testing process is in immediate planning, with the accelerated weathering process potentially due to begin within a matter of weeks.

    Want more information regarding ProPERLA products? Our team of experts are on hand to give any help or advice you may require. Why not get in touch with them by emailing info@properla.co.uk?
  2. Roof Replacement – Is It Worth It?

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    With any building material, there comes a time when they are looking tired and in need of upgrading. This is especially the case with roofs as they take a huge mount of punishment from the elements, whether in a warm country due to the heat or a wet country such as the UK. That is why a roof replacement is something many people consider in order to upgrade the performance and the appearance of their roof, breathing a new lease of life into a property. In this guide we are going to discuss roof replacements and whether they are really worth it, so you can decide on the best course of action for you and your home.

    What is a roof replacement?

    Firstly let's establish what exactly a roof replacement is. As the name would suggest, a roof replacement involves the process of removing everything on the roof down to the deck, which is then followed by putting on new layer of felt paper down and then the installation of new roof tiles.

    An alternative form of roof renovation is roof repair, which is a better option than an entire roof replacement if a roof is not damaged on a large scale. 

    When should I replace my roof?

    There are a number of situations that will decide whether you will need to replace or roof, or simply undertake remedial works on your roof:

    • Roof age - if your roof is older than 20-25 years, this is often the recommended age in which a roof may require to be replaced.
    • Roof sagging if your roof tiles are beginning to sag or bow in the middle, this is something that could lead to structural damage and will need to be resolved through roof remedial or replacement.
    • Blown or missing tiles - any missing tiles is something that much be rectified as soon as possible by a remedial work, or if it is large scale then potentially a roof replacement. The same goes for blown roof tiles that have been damaged by moisture or moss growth. When moss grows, it absorbs moisture which causes roof tiles to lift away from the other roof tiles, causing significant damage.
    • Water damage if there a clear stains on your interior ceilings or walls, this is a direct indication that your roof may be leaking.

    A roof replacement is a big task and is one that we all want to avoid if possible. If there is a structural problem with your roof such as it sagging or tiles missing, this must be addressed by a roofing specialist.

    How much does a roof replacement cost?

    A roof replacement is not a quick job. Roofcosts.co.uk estimate that the replacement of a whole roof on a semi-detached three bed property using plain slates costs on average £5550 which could grow to £8,250 on a larger property, using a natural slate roof tile.

    This is due to all of the costs involved, not only from labour costs and scaffolding costs but of material costs from all new roof tiles.

    The size of the property and the quality of the materials used will significantly change the price of a roof replacement, so it is extremely difficult to estimate the exact price your roof would cost to be replaced.


    Advantages & disadvantages of a roof replacement

    There are a number of advantages & disadvantages of a full roof replacement:

    Advantages

    • It can add value to your property, especially if your old roof was a significant eye-sore and had structural issues that would be off-putting to potential buyers
    • If leaks are being caused by a fault in the roof, then the quicker this is solved, the less 2nd hand damage and remedial costs will be incurred.

    Disadvantages

    • They can be extremely costly, often unnecessarily.
    • Replacing a roof is a large operation that takes many men and a large amount of disruption to your home.
    • There are cheaper alternatives that are suitable for many people that opt for a roof replacement

    In summary, there are a number of situations in which a full roof-replacement is recommended, however not in all cases. Often, problems relating to moss growth, moisture & the appearance of a roof can be resolved without replacing your current roof tiles, which is a large scale renovation job. But what is the alternative? 

    Roof replacement alternatives

    If your roof is not having any structural issues such as a sagging roofline or large scale damaged roof tiles, then there are much more cost effective solutions to improving the appearance of your roof and protecting it from the elements.

    It is a commonly held opinion that roof tiles are waterproof, however the truth is that they are porous, meaning they absorb moisture. This moisture leads to damage & decay of roof tiles as moisture is the route cause cracks to roof tiles. When these cracks appear, moisture and moss get between these cracks, which when the freeze they expand, causing the crack to get even larger. This continues until a large amount of moss covers your roof and it losses its integrity.

    This is where waterproof technology comes in. The super hydrophobic technology developed by ProPERLA is the most advanced waterproof technology available in the UK today. This technology is contained in a range of roof coating treatments that protect roof tiles and enhance their beauty.

    Applying a roof coating has a number of other benefits:

    • Allows moisture to repel straight off the roof tile before it absorbs into the material
    • Creates a self-cleaning surface as dirt particles are repelled from roof tiles with any rain fall 
    • Extends the lifespan of roof tiles as moisture is the biggest cause of roof tile failure
    • Makes it difficult for the growth of algae, lichens or moss on the roof tiles
    • Helps to prevent discolouration and salt efflorescence

    ProPERLA's super hydrophobic technology is available for a range of materials such as roofs, exterior walls, wood & paving. In particular, there are two forms of waterproofing products for roofs; ProPERLA Water Repellent and RENOTEC Roof Coating.

    While ProPERLA Water Repellent is a clear, invisible system that helps to protect roof tiles from water damage, RENOTEC Roof Coating is a popular choice with homeowners who want to transform their roof tiles without paying for a hugely costly re-roofing of their home. 

    Both of these products come with a 10 manufacturers guarantee as they have been independently certified following rigorous testing.

    RENOTEC Roof coating
     

    The ultimate waterproof paint for roofs

    • Available in a range of popular exterior colours
    • Super hydrophobic
    • Highly breathable
    • Self-cleaning
    • Discourages moss, algae & lichens
    • Helps to extend the lifespan of the roof tiles
    • 10 year manufacturer's guarantee
    Renotec Roof Coating
    ProPERLA water repellent
     

    The ultimate clear roof waterproofer

    • Creates an invisible protective barrier
    • Super hydrophobic
    • Highly breathable
    • Self-cleaning
    • Discourages moss, algae & lichens
    • Helps to extend the lifespan of the roof tiles
    • 10 year manufacturer's guarantee
    Water Repellent

    RENOTEC Roof Coating

    Moss on roof

    Before

    moss on roof tiles

    Before

    moss removed

    After

    moss on roof tiles removed

    After

    RENOTEC is available in seven popular colours that are designed to match any property. Red Brown & Rustic shades are two of our most popular colours as they provide a beautifully traditional look to any property. For something more modern, Anthracite & Black Blue also prove extremely popular. These shades work perfectly with white rendered properties, and can really provide a huge kerb appeal. Roof coatings are the perfect product not only for painting roofs in an attractive colour, but providing long-term protection.

    Renotec Roof Colours

    ProPERLA Water Repellent

    While the clear ProPERLA Water Repellent does not alter the appearance of roof tiles, as with any coating, dirt and grime must be washed off before it is applied. This means that the roof must be cleaned of any moss, dirt or algae by a professional before being coated with the ProPERLA Water Repellent, which creates the self-cleaning, waterproof barrier on the roof tiles that keeps them looking pristine for years to come. This is due to the moisture not being able to cause the moss growth and discolouration to the roof tiles that it can cause on untreated properties.

    Once this is done, it is astonishing the difference it can make to a roof. The colour of the roof tiles beneath can provide a beautiful new look to your home, while offering a more natural finish to the roof tiles as they will still vary in shade from one another. This is particularly useful for older properties that benefit from a more rustic finish to the roof tiles.

    Before

    Before

    After

    After

    Roof coating Vs roof replacement

    You may be wondering how having a roof coating applied to your property will differ compared to having a roof replacement. Here are the main differences;

    • Time - a roof coating takes a fraction of the time of a roof replacement.
    • Cost - as we have discussed, a roof replacement can be a hugely costly renovation work to carry out due to the time it takes and the materials needed. Coating a roof is a cheaper alternative as it does not require the same level of materials as it is applied to the existing materials. Furthermore, it involves less labour costs due to the quicker turnaround.
    • Preservation - one of the key benefits of ProPERLA Water Repellent is that it does not affect the appearance of the original roof tiles. For older properties, a more natural and rustic look can be achieved by simply protecting the roof tiles with a waterproof treatment.
    • Ease - If your house is listed or in a conservation area then you need to check whether you will need any planning permission to re-roof your house.
    • Disruption - replacing a roof causes significant disruption. while a roof coating minimises this as it is applied to roof tiles by not disturbing the roof itself.
    • Protection - while a new roof will provide protection from the elements, eventually this will undergo the same deterioration process of your old roof tiles, eventually leading to damage once again.
    • Structural issue - as we have mentioned, coating your roof will not solve any structural issues with your roof. These should be resolved before you attempt to coat your roof. 


    How to get your roof coated

    We do not advise that you attempt to coat your roof using specialist treatment such as ProPERLA, as there are countless things that can go wrong.

    We have a number of Approved Installers who have completed our ProPERLA training course, that ensures they can expertly apply our roof treatments treatments to your home. Please see our Approved Installers page here to find an installer in your area who can assess your property and provide a quotation.

    We hope this guide has answered any questions you may have had regarding moss & how to prevent it. No matter whether you are a homeowner or a roof coating company. We are on hand to assist you with any question you may have.


    Frequently Asked Questions

    Q. How often should roof be replaced?

    It is recommended that a roof should be replaced every 25 years, but in truth some roof are built to higher standards than others. If you roof is in good condition, you do not require a roof replacement for the sake of it. These are the properties that benefit from a waterproof roof coating the most, as they will have their lifespans extended for years to come.

    Q. How long does a roof replacement take?

    The size, weather and other factors will all play a large role in how long a roof replacement will take, but it could take up to a week to complete a full replacement.

    Q. Does insurance cover roof replacement?

    As with many insurance policies, homeowners insurance policies tend to cover roof replacements only if the damage was caused by a sudden accident such as a storm. Most damaged roofs are caused by long-standing moisture ingress causing them to decay over time. This means that it many be unlikely that you can claim for this, and is something you will have to pay for yourself.

    Q. How long does roof coating last?

    All roof coatings depending on their quality will vary in lifespan. The roof coatings at ProPERLA come with 10 year manufacturer guarantees, although they will likely exceed this. 

    Q. Do roof coatings stop leaks?

    Roof coatings help to prevent the ingress of moisture on roof tiles by creating a waterproof barrier. There can be some underlying structural problems that a roof coating cannot resolve which must be addressed also. The process of roof cleaning that is required before coating the roof can also help to prevent leaks.

    Want to speak to one of our technical advisers for further advice on our range of roof coating treatments? They are always on hand to answer any questions you may have. Send them an email - info@properla.co.uk
  3. The Truth About Waterproofing A Roof

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    Maintaining the integrity of your home is one of the most important aspects of being a homeowner and can be one of the most stressful. We all want to keep our home protected, by how do you do this, and especially without breaking the bank.

    This is where roof waterproofing treatments come in, as they provide an effective solution for any roof, whether new or old.

    What is a roof waterproofing treatment?

    Firstly let's establish what exactly a roof waterproofing treatment is. These treatments come in a range of forms, that can generally be put into two categories; roof coatings and roof sealers. These treatments are often called different things, however essentially a roof coating is a coloured roof paint, while a roof sealer is a clear, invisible waterproofing treatment that does not alter the appearance of the roof.

    Roof waterproofing products are designed to prevent moisture from absorbing into a roof tile. This is contrary to popular belief, with many homeowners believing that their roof is already waterproof. The truth is that roof tiles, like most building materials are porous, meaning they absorb some level of moisture. This moisture causes significant damage to roof tiles, causing cracks along the tiles, allowing moss to grow, and generally weakening the strength of the roof.

    Untreated roof tiles suffer from a range of problems, including:

    • When a roof is left untreated, moisture can find its way into any gaps between roof tiles, which when it freezes expands, causing hairline cracks in the roof tiles to grow larger.
    • High moisture conditions are perfect for moss to grow, which lifts roof tiles away from each other when it grows, increasing the likelihood of damage.
    • UV degradation can cause discolouration of the roof tiles

    This is why waterproof technology has been developed for roof tiles, in order to help protect and restore new and old tiles.

    The truth about waterproofing a roof

    All waterproof technology has come under fire over the years, with roof waterproofing treatments being no exception. This bad press has come from the introduction of the term 'sealer'. A traditional sealer waterproofs a surface by 'sealing' it, thus not allowing water to absorb into the surface. This attempts to prevent damage and decay that moisture causes over time. Unfortunately, many of these sealers over the years, and still today, while they prevent moisture from entering the material, also prevent moisture from escaping from inside the sealed surface. This traps moisture inside a property, which can be hugely damaging to the material and can cause problems such as damp.

    Due to these non-breathable roof waterproofing treatments, many have been led to believe that all of these products are 'sealants' and therefore will be hugely damaging when applied to a roof.

    This is why the latest roof waterproofing technology has been developed, in order to ensure that the breathability of the roof is not compromised once the waterproofer is applied. To be considered breathable, a waterproofing treatment must have an SD rating of below 1. If it has an SD rating of below 1, then water vapour can freely breathe out of the roof, maintaining dry building materials.

    If a roof waterproofer or roof sealer does not have an SD of below 1, then you must avoid this completely. It will simply trap moisture inside your property, simply making any damp problems worse, as we have discussed.

    What's the best breathable waterproofing treatment?

    The super hydrophobic technology developed by ProPERLA is the most advanced waterproof technology available in the UK today. 

    The super hydrophobic technology consists of the latest nano-technology that lines the pores of exterior surfaces without sealing them. This is achievable as water vapour is small enough to breathe through the treatment, while water particles are too large, thus why they are repelled.

    Waterproofing a roof using ProPERLA's super hydrophobic technology has a number of other benefits:

    • Creates a self-cleaning surface as dirt particles are repelled with any rain fall 
    • Extends the lifespan of roof tiles as moisture is the biggest cause of roof tile failure
    • Makes it difficult for the growth of algae, lichens or moss on the roof tiles
    • Helps to prevent discolouration and salt efflorescence

    ProPERLA's super hydrophobic technology is available for a range of materials such as roofs, exterior walls, wood & paving. In particular, there are two forms of waterproofing products for roofs; ProPERLA Water Repellent and RENOTEC Roof Coating.

    While ProPERLA Water Repellent is a clear, invisible system that helps to protect roof tiles from water damage, RENOTEC Roof Coating is a popular choice with homeowners who want to transform their roof tiles, without paying for a hugely costly re-roofing of their home, which can cost significantly more than simply coating the tiles.

    Both of these products come with a 10 manufacturers guarantee as they have been independently tested and certified following a number of tests.

    ProPERLA Water Repellent has been manufactured in accordance with DIN 4108, which is the European rating for water repellency. and certified in accordance with EN1504-2 : 2005, confirming depth of penetration, water absorption & resistance to alkali.

    RENOTEC Roof Coating has achieved the following quality standards;

    • DIN EN ISO 53054 - Tensile strength
    • DIN EN ISO 7783-2 - Water vapor permeability
    • DIN EN ISO 1062/3 - Water impermeability
    • DIN EN ISO 4624 - Pull-off test for adhesion

    These results confirm that the roof coating not only remains flexible to resist tearing, but it also maintains full breathability, is water repellent and offer superb adhesion to roof tiles.

    RENOTEC Roof coating
     

    The ultimate waterproof paint for roofs

    • Available in a range of popular exterior colours
    • Super hydrophobic
    • Highly breathable
    • Self-cleaning
    • Discourages moss, algae & lichens
    • Helps to extend the lifespan of the roof tiles
    • 10 year manufacturer's guarantee
    Renotec Roof Coating
    ProPERLA water repellent
     

    The ultimate clear roof waterproofer

    • Creates an invisible protective barrier
    • Super hydrophobic
    • Highly breathable
    • Self-cleaning
    • Discourages moss, algae & lichens
    • Helps to extend the lifespan of the roof tiles
    • 10 year manufacturer's guarantee
    Water Repellent

    RENOTEC Roof Coating

    Moss on roof

    Before

    moss on roof tiles

    Before

    moss removed

    After

    moss on roof tiles removed

    After

    RENOTEC is available in seven popular colours that are designed to match any property. Our Red Brown & Rustic shades are two of our most popular colours, as they provide a beautifully traditional look to any property. For something more modern, Anthracite & Black Blue also prove extremely popular. These shades work perfectly with white rendered properties, and can really provide a huge kerb appeal. 

    Renotec Roof Colours

    ProPERLA Water Repellent

    While the clear ProPERLA Water Repellent does not alter the appearance of roof tiles, as with any coating, dirt and grime must be washed off before it is applied. This means that the roof must be cleaned of any moss, dirt or algae by a professional.

    Once this is done, it is astonishing the difference it can make to a roof. The colour of the roof tiles beneath can provide a beautiful new look to your home, while offering a less impactful finish to the roof tiles as they will still vary in shade from one another. This is particularly useful for older properties that benefit from a more rustic finish to the roof tiles.

    Before

    Before

    After

    After

    How to waterproof a roof

    We do not advise that you attempt to waterproof a roof yourself using specialist treatment such as ProPERLA, as there are countless things that can go wrong.

    We have a number of Approved Installers who have completed our ProPERLA training course, that ensures they can expertly apply our roof treatments treatments to your home. Please see our Approved Installers page here to find an installer in your area who can assess your property and provide a quotation. These companies range from roof cleaning companies to home improvement companies, who are all trained & certified to apply ProPERLA products.

    We hope this guide has answered any questions you may have had regarding moss & how to prevent it. No matter whether you are a homeowner or a roof coating company. We are on hand to assist you with any question you may have.

    Want to speak to one of our technical advisers for further advice on our range of roof waterproofing treatments or want more information regarding waterproofing a roof? They are always on hand to answer any questions you may have. Send them an email - info@properla.co.uk
  4. Roof Painting – Is It A Good Idea?

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    Maintaining the integrity of your home is one of the most important aspects of being a homeowner and can be one of the most stressful. We all want to keep our home protected, by how do you do this, and especially without breaking the bank.

    This is where roof paints & coatings come in, as one of the many products that are designed to improve your home. But are they a good idea? Our team of experts have put together this guide in order to give you all the information you need, so you can decide whether are not they are for you.

    What is a roof paint or coating?

    Firstly let's establish what exactly a roof paint, also known as a roof coating is. These are specially designed treatments for roof tiles that aim to enhance the beauty of the roof tiles, while providing added protection from the tough weathering that they endure.

    These paints & coatings, as with any product, come with varying technology and quality, which is where confusion is often caused.

    Why would you use a roof paint or coating?

    When it comes to painting a roof, the basis premise is to create a water impermeable barrier on roof tiles to prevent moisture from damaging the roof, and to provide a beautiful, like-new finish to the roof that can give a huge boost to the property's curb appeal..

    You may be thinking, surely roof tiles are waterproof already? Well, this is not always the case, as roof tiles are porous, meaning they absorb small quantities of water. This water can cause a number of issues;

    • When a roof is left untreated, moisture can find its way into any gaps between roof tiles, which when it freezes expands, causing hairline cracks in the roof tiles to grow larger.
    • High moisture conditions are perfect for moss to grow, which lifts roof tiles away from each other when it grows, increasing the likelihood of damage.
    • UV degradation can cause discolouration of the roof tiles

    These are all key reasons why preventing moisture from entering roof tiles can significantly enhance the longevity of roof tiles, helping to maintain your property's integrity.


    Are roof paints & coatings damaging?

    As with any waterproof treatment for properties, the ability for a waterproof roof coating to breathe is paramount to its ability to protect a property. If a building material such as roof tiles are sealed completely, meaning water cannot enter or escape, moisture from inside the property will build up, both causing significant damp and damage to the material.

    This is why a waterproof treatment must be breathable, allowing moisture to breathe through the coating. To be breathable, a waterproof treatment must have an SD rating of below 1. If a roof paint or coating does not have this, then you must avoid these completely!

    If a waterproof roof paint or coating remains breathable, it will prevent water from soaking into the roof tile, while ensuring that moisture can escape and keep the roof tile dry.

    Do roof paints & coatings insulate homes?

    We often get asked whether roof coatings help to insulate homes. The truth is, although dry building materials transfer heat slower than wet materials, which is why wall coatings can save energy, roof coatings do not work in the same way.

    Roof tiles are designed to allow air to flow freely through the roof and there is no evidence to suggest painting a roof could improve your home's thermal efficiency. Roof paints & coatings are designed to protect roof tiles and to enhance their beauty, not to serve as an energy saving measure.

    The reason wall coatings can insulate a home is that they prevent moisture from creating a thermal bridge that allows heat to quickly pass out of a property. Roof tiles are only thin, and therefore do not form an insulating barrier, whether painted or not. This is why spray foam insulation is used on roofs to prevent energy loss.

    Do roof paints & coatings insulate homes?

    We often get asked whether roof coatings help to insulate homes. The truth is, although dry building materials transfer heat slower than wet materials, which is why wall coatings can save energy, roof coatings cannot!

    Roof tiles are designed to allow air to flow freely through the roof space and there is no evidence to suggest painting a roof could improve your home's thermal efficiency. Roof paints & coatings are designed to protect roof tiles and to enhance their beauty, not to serve as an energy saving measure.

    What is the best roof paint or coating?

    Here at ProPERLA, we offer a range of super hydrophobic coatings and treatments for a range of surfaces, including roofs, exterior walls, wood & paving. 

    Our super hydrophobic is the most advanced waterproofing technology in the UK, as it completely repels water while maintaining complete breathability.

    This ensures that while moisture can freely escape a property, our roof treatments prevent moisture from causing damage to roof tiles, causing growth of moss & algae and helps to extend the lifespan of roof tiles.

    We offer two roof treatments, a coloured roof coating and a clear water repellent, which both contain our super hydrophobic technology, but either allow you to maintain the natural beauty of your roof tiles, or transform the roof in a new, modern colour that will completely change your home for the better,

    Another key advantage of our roof treatments is that they are self-cleaning. Yes, self-cleaning, as due to water being repelled off the roof tiles once treated, any dirt or grime cannot attach to the roof tiles. This means that your roof tiles stay looking pristine new for years to come, dirt and moss free.

    Both of our roof treatments come with a 10 year manufacturers guarantee, that ensures they will perform for years to come without changing in appearance or reducing in waterproofing ability.

    RENOTEC Roof coating
     

    The ultimate waterproof paint for roofs

    • Available in a range of popular exterior colours
    • Super hydrophobic
    • Highly breathable
    • Self-cleaning
    • Discourages moss, algae & lichens
    • Helps to extend the lifespan of the roof tiles
    • 10 year manufacturer's guarantee
    Renotec Roof Coating
    ProPERLA water repellent
     

    The ultimate clear roof waterproofer

    • Creates an invisible protective barrier
    • Super hydrophobic
    • Highly breathable
    • Self-cleaning
    • Discourages moss, algae & lichens
    • Helps to extend the lifespan of the roof tiles
    • 10 year manufacturer's guarantee
    Water Repellent
    Moss on roof

    Before

    moss on roof tiles

    Before

    moss removed

    After

    moss on roof tiles removed

    After

    What roof coating colours are available?

    RENOTEC is available in seven popular colours that are designed to match any property. Our Red Brown & Rustic shades are two of our most popular colours, as they provide a beautifully traditional look to any property. For something more modern, Anthracite & Black Blue also prove extremely popular. These shades work perfectly with white rendered properties, and can really provide a huge kerb appeal. 

    Renotec Roof Colours


    How to paint a roof

    We do not advise that you attempt to paint your roof using a waterproofing treatment as there are countless things that can go wrong, and if done incorrectly can be a disaster.

    We have a number of Approved Installers who have completed our ProPERLA training course, that ensures they can expertly apply our roof treatments treatments to your home. Please see our Approved Installers page to find an installer in your area who can assess your property and provide a quotation.

    We hope this guide has answered any questions you may have had regarding moss & how to prevent it!

    No matter whether you are a homeowner or a roof coating company. We are on hand to assist you with any question you may have.

    Want to speak to one of our technical advisers for further advice on our range of roof paints & coatings? They are always on hand to answer any questions you may have. Send them an email - info@properla.co.uk
  5. Moss On Roofs – The Ultimate Guide

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    Moss, green growth, algae and lichens can be a real annoyance to many homeowners. It attaches itself to the roof tiles due to moist conditions, often ending up causing problems to your roof tiles & gutters. In this article we are going to give you all the information you need to say goodbye to moss on your roof!

    What causes moss on roofs?

    Like any weed, moss releases spores that cause it to spread easily, especially in wet & cold areas. What makes roofs susceptible to moss is the large number of nooks & crannies that allows the moss to attach to the surface. Furthermore, roof tiles are often made of porous materials, making them the perfect material for moisture, and thus weeds. This allows them to spread quickly & effectively across the roof in-between the roof tiles.

    Is moss on roof tiles a problem?

    Yes, moss can cause significant issues for your roof tiles. By growing in the gaps between roof tiles, moss can compromise the ability for your roof to keep out moisture.

    It does this in two ways. If moss is allowed to grow on your roof, the moisture that the moss soaks up can cause roof tiles to rot. Secondly the growth of the moss and the moisture it brings will fill the gaps between the roof tiles, which can move & damage the roof tiles. This is because the moisture can compromise the bond between the adjoining materials that ensure the integrity of the roof.

    In many cases small amounts of moss can be a small eye sore, however if left the develop, it can become an unnecessary issue for your home.

    Yes, moss can cause significant issues for your roof tiles. By growing in the gaps between roof tiles, moss can compromise the ability for your roof to keep out moisture.

    What is the best time of year to remove moss from roofs?

    If you want someone to remove the moss from your roof, the best time to do this is summer. The summer months, while the weather is dryer, is definitely the best time of year to any exterior cleaning work carried out. This is especially the case if you are planning on removing moss yourself, which we would not recommend, but certainly would advise against during winter or autumn.

    How do you prevent moss on a roof?

    We often get asked 'how do I get rid of moss on my roof?' Firstly, the roof must be cleaned to remove any moss attached to the roof tiles. In cases where the moss growth is not large scale, it can be cleaned off using a hose pipe. Do not use a pressure washer as this will damage your roof tiles.

    If the case is more substantial, then it is wise to use a professional. A company who specialises in roof cleaning will be able to effectively clean the moss from your roof tiles. 

    However, just cleaning the roof is not enough. The cause of the moss still exists, and in a number of years the moss will be back. To prevent moss from growing on roof tiles, we have developed a number of highly advanced treatments that deal with the problems associated with moss growth.

    Our super hydrophobic roof coatings create a waterproof & self-cleaning surface on roof tiles, meaning not are the issues that cause moss dealt with, but moss and any other dirt cannot attach to the roof tiles.

    It achieves this thanks to the latest nano-technology that creates a super hydrophobic surface on roofs, which completely repels water, dirt & moss.

    The treatment is also highly breathable, meaning moisture can escape from inside the property. This is in stark contrast to roof 'sealants' that seal moisture under the surface of the roof, leading to significant damage.

    ProPERLA roof treatments come in two forms; a coloured roof paint & a clear roof treatment.

    RENOTEC Roof coating
     

    The ultimate waterproof paint for roofs

    • Available in a range of popular exterior colours
    • Super hydrophobic
    • Highly breathable
    • Self-cleaning
    • Discourages moss, algae & lichens
    • Helps to extend the lifespan of the roof tiles
    • 10 year manufacturer's guarantee
    Renotec Roof Coating
    ProPERLA water repellent
     

    The ultimate clear roof waterproofer

    • Creates an invisible protective barrier
    • Super hydrophobic
    • Highly breathable
    • Self-cleaning
    • Discourages moss, algae & lichens
    • Helps to extend the lifespan of the roof tiles
    • 10 year manufacturer's guarantee
    Water Repellent
    Moss on roof

    Before

    moss on roof tiles

    Before

    moss removed

    After

    moss on roof tiles removed

    After

    What roof coating colours are available?

    RENOTEC is available in seven popular colours that are designed to match any property. Our Red Brown & Rustic shades are two of our most popular colours, as they provide a beautifully traditional look to any property. For something more modern, Anthracite & Black Blue also prove extremely popular. These shades work perfectly with white rendered properties, and can really provide a huge kerb appeal. 

    Renotec Roof Colours

    Both RENOTEC Roof Coating & ProPERLA Water Repellent extend the lifespan of roofs & ensure they remain clean for years to come.

    We have a number of Approved Installers who can expertly apply our moss preventing roof treatments treatments to your home. Please see our Approved Installers page here to find an installer in your area who can assess your property and provide a quotation.

    We hope this guide has answered any questions you may have had regarding moss & how to prevent it!

    If you would like more information regarding roof coatings, why not read our full guide to painting roofs that answers all of the most common questions.

    Want to speak to one of our technical advisers for further advice on our range of roof treatments? Send them an email - info@properla.co.uk
  6. Cavity Wall Insulation – Damp

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    Cavity walls were designed to prevent the ingress of water however penetrating damp can still occur. A bridge across the cavity can be formed, which allows rainwater to move through to the inner surface of the property. This occurs for example where;

    • the cavities have been incorrectly filled
    • the wall ties have been incorrectly installed
    • obstructions exist in the cavities
    • the insulation was not properly installed

    What are cavity walls & how do they work?

    Cavity walls were originally designed to be used only in coastal areas of Britain and Ireland to prevent wind driven rain from penetrating to the inside of homes. Cavity walls soon became the preferred practice in construction across the country and now over two-thirds of dwellings in England (70%) have them.

    Cavity walls consist of two walls known as 'skins' separated by a hollow space, the cavity. In driving rain the outside cavity wall becomes saturated and water (often in  quite large quantities) runs freely down the inside cavity and escapes at the bottom through weep holes. This process prevents water penetrating to the inside wall. The weep holes also allow air to flow and remove evaporated water from the cavity.

    Does cavity wall insulation cause damp?

    Research shows that cavity wall insulation (CWI) can cause damp but it depends when, where and how it was installed.

    From the 1980's onwards, the Building Regulations have required all new houses to be built with insulation material in the cavity. In most cases, the insulation material (normally in the form of rigid foam boards) are fixed to the inner wall leaving a small gap in the cavity to allow any rainwater to run down. If the insulation is properly installed during the construction phase then it should not hinder the cavity wall from protecting against rain penetration.

    When retrofitted, however, through the process of  injecting an insulating material (such as fibres, beads or a foam) into the cavity, cavity wall insulation has the potential to cause damp. The Building Research Establishment (BRE), a world leading, scientific research centre published their BRE Good Building Guide (44, Part 2) which provided the following guidance on cavity wall insulation;

     “There can be an increased risk of rain penetration if a cavity is fully filled with insulation, i.e. moisture is able to transfer from the outer to the inner leaves resulting in areas of dampness on internal finishes. Rainwater, under certain driving rain conditions, can penetrate the outer leaf of masonry leading to wetting of the cavity insulation, a reduced thermal performance and damage to internal finishes.”

    How can cavity wall insulation cause damp?

    There are a number of possible ways cavity wall insulation can cause damp, this article will focus on the following two ways;

    1. Wind driven rain
    2. Poorly fitted insulation

    Wind driven rain

    By filling a cavity wall with insulation, you can end up removing the space necessary for water to freely escape the building - the wall can then no longer function properly to protect the building from damp.

    Wind driven rain that causes cavity wall damp

    When the building is exposed to wind driven rain, the outer wall becomes saturated with water, the insulation then acts a bridge for this water to reach the inner wall and cause damp.

    Such is the potential for wind driven rain to penetrate cavity wall insulated walls that guidance exists to suggest some homes in the UK are simply not suitable for this type of retrofitted insulation.

    Despite a significant increase since 1996 in the prevalence of cavity wall insulation across the UK, the geographical location of your home and the amount of wind driven rain it is exposed are very important factors when it comes to the risk of damp. The Government’s Energy Saving Trust website states that homes are only suitable for cavity insulation if the walls are not exposed to driving rain.

    The BRE Guide divided the UK into levels of exposure zones which indicate the approximate amount of wind driven rain which a building may be subject to. The image below, featured in a Which? article, displays these exposure zones. 

    Wind Driven Rain Exposure Zones

    According to the BRE Guide, homes in Zones 3 and 4 which include Wales, West Scotland, Cornwall, Somerset, Devon and the North West Coast are not suitable for cavity wall insulation due to high levels of wind driven rain.

    Additionally any assessment into the property's suitability for cavity wall insulation also needs to take into account the local features and geographical terrain which may make a building more or less suitable for this type of insulation and the risk posed from wind driven rain.

    Poorly fitted insulation

    Proper installation of cavity wall insulation, which follows the industry's best practices, is essential for the long term performance of the insulation and the avoidance of damp.

    Unfortunately some companies do not always follow the rule book and the property owner has to deal with the resulting long term problems. Examples of poor company practices include;

    • Failure to perform a thorough survey to assess the property's suitability for cavity wall insulation
    • Ignoring factors which would deem cavity wall insulation unsuitable and installing it regardless
    • Failure to address and remedy existing building defects and obstructions in the cavity
    • Insufficient amounts of cavity wall insulation used
    • Uneven installation - leaving voids

    The cavity itself should be thoroughly inspected prior to installation to ensure the wall meets strict British Standards. Unfortunately a lot of cavity walls have unfilled mortar joints, debris and wall ties covered with mortar droppings These obstructions  can not only act like a bridge for water to pass through to the internal wall but they can also prevent the insulation from filling the cavity evenly. Gaps in the insulation can lead to temperature variations and  'cold spots' on the internal walls - when warm air touches these 'cold spots' it can result in condensation and mould.

    Voids in the insulation and the ensuing problems with 'cold spots' can also occur over time due to an insufficient amount of insulation material being installed in the cavity wall. As time passes, the insulation can sink to the bottom of the cavity leaving 'cold spots' at the top of the wall.

    It is also essential that the cavity wall ties (cavity wall ties join the two leaves of a cavity wall together and provide  structural stability) are inspected prior to the installation of insulation to ensure there is a sufficient number of them and that there is no evidence of corrosion. It is much more difficult and problematic for the homeowner to fix any issues with the wall ties once cavity wall insulation has been installed.

    It is also important to remember that buildings need to "breathe" and they rely on constant air circulation. In cases of poor cavity wall installation, essential air vents have been blocked with insulation which consequently impedes the flow of air through the home. If moisture is unable to escape or evaporate this can also lead to damp problems.

    What problems can damp cause?

    Damp can cause a host of problems not only for your home but for your health and your pocket too! It is therefore essential to address any signs of damp as soon as possible.

    Protect your health

    Damp creates an indoor environment that is detrimental to your health. The World Health Organisation consider excessive dampness and mould a "threat to health".  

    Damp becomes a breeding ground for fungi, bacteria and mould which subsequently emit spores, cells and volatile organic compounds into your home. 

    "[I}f you have damp and mould you're more likely to have respiratory problems, respiratory infections, allergies or asthma. Damp and mould can also affect the immune system."

    NHS website

    Protect your home

    Damp can not only cause damage to the decorative finishings, ruining paint and wallpaper, it can also cause structural problems.

    If the cavity wall insulation is damp it can accelerate the rusting of the wall ties, causing them to corrode much quicker. Failure to rectify these issues can, in extreme cases, lead to the external wall collapsing.

    Protect your wallet

    save money cavity wall insulation damp

    If the cavity wall insulation becomes saturated with water, it will reduce the thermal performance of the material. Damp insulation materials act as a thermal bridge (sometimes referred to as a cold bridge or a thermal bypass) causing heat to transfer away from the building. Damp cavity wall insulation can potentially increase heat loss (and therefore increase energy consumption) rather than reduce it.

    What can be done about damp caused by cavity wall insulation?

    If you believe your home is being affected by damp caused by cavity wall insulation there are a number of things you can do to take action to protect your home, health and your wallet.

    • Contact the company who installed the cavity wall insulation and ask them to inspect the damp and what they can do to resolve it
    • If you or the previous owner were given a 25 year guarantee for the cavity wall insulation, you can contact the Cavity Insulation Guarantee Agency (CIGA)
    • Rectify any building defects which could be affecting the cavity wall insulation and contributing to the damp
    • Remove the cavity wall insulation

    If your home is exposed to a lot of wind driven rain, there is another way to protect your home from damp. Apply one of our highly water repellent coatings and keep your walls dry, whilst still allowing them to breathe.

    How can a wall coating help with damp?

    Wind driven rain causes the outer wall to become saturated with water and as discussed above, the insulation can then act as a bridge for this water to reach the inner wall and cause damp. However, if you apply one of our highly water repellent and highly breathable coatings, you can keep the outer walls dry and thereby prevent water from moving through the cavity to the inner surface. 

    Surfaces treated with ProPERLA super hydrophobic coatings reduce water absorption by more than 95%. When it rains, the rain water forms beads and simply rolls off the treated surface leaving it dry, very similar to the super hydrophobic capabilites of the lotus leaf.

    To be considered super hydrophobic, a coating needs to create a high water contact angle- most water repellent coatings create a contact angle of only 40-50 degrees, ProPERLA creates an angle of 140 degrees.

    It's important to note that ProPERLA is not a sealant- it does not trap moisture or impede water vapour from escaping from inside the building and evaporating naturally. 

    The video demonstrates the ease in which air (trapped in bubbles in this case) is able to permeate and escape a masonry block treated with ProPERLA Facade Coating.

    ProPERLA Facade Coating benefits from an SD rating (breathability rating) of 0.06 whilst ProPERLA Masonry Creme has an SD rating of 0.03  - these are both much lower ratings (and therefore more breathable) than an SD rating of 0.5 which is considered breathable by industry standards.

    Keeping walls dry not only helps to protect against damp it also helps you to reduce heat loss and contributes to lower energy bills. 

    The heat retention of houses coated with ProPERLA

    ProPERLA uses the latest silicone resin based nanotechnology to create coatings that can give you long term peace of mind- they come with a manufacturer's guarantee of between 10-20 years. 

    ProPERLA is suitable for a range of substrates and with the option to maintain the natural appearance of the walls or select a coloured finish, there's a ProPERLA coating for everyone.

    Masonry Creme

    ProPERLA Masonry Creme

    A highly advanced clear masonry cream.

    • For use on a bare brick, stone, concrete & sandstone
    • Water repellent
    • Verified by the Energy Saving Trust
    • Penetrates up to 17mm into the substrate to provide a clear insulation barrier
    • Dries clear, it does not alter the appearance of the substrate
    • Creates a self-cleaning surface
    • Highly breathable
    • Comes with a 20 year manufacturers guarantee and a 25 year life expectancy
    ProPERLA Facade Exterior Wall Coating

    ProPERLA Facade Coating

    A highly advanced coloured exterior wall coating.

    • For use on a brick, stone, concrete or render
    • Water repellent
    • Verified by the Energy Saving Trust
    • Available in a range of popular colours
    • Creates a self-cleaning surface
    • Highly breathable
    • Discourages growth of moss, algae and lichens
    • Creates an attractive, matt finish on exterior walls
    • Comes with a 10 year manufacturers guarantee and a 25 year life expectancy

    Frequently Asked Questions

    Q. How can I have my property treated with a ProPERLA product?

    Due to the highly advanced nature of ProPERLA super hydrophobic coatings, they must be applied by a professional.

    We have a number of approved applicators across the UK who have attended our rigorous training course in order to be able to apply ProPERLA coatings to the highest possible standards.

    If you would like your home treated using either ProPERLA Masonry Creme or ProPERLA Facade Coating in order to prevent further moisture ingress on your exterior walls, you can find your nearest approved applicator on our applicator finder tool. Simply input your postcode and you will be able to find applicators in your area.

    Q. What is the difference between ProPERLA Masonry Creme & ProPERLA Facade Coating?

    Both coatings contain the same super hydrophobic technology that repels water, remains highly breathable and have a 25 year life expectancy.

    The difference between the two treatments is that one is a clear coating, while the other is a coloured coating. As a clear masonry cream, ProPERLA Masonry Creme penetrates into bare brick, stone or concrete in order to chemically bond to the substrate. The difference with ProPERLA Facade Coating is that in order to create a coloured finish it cannot penetrate into the substrate. It instead creates a paint film, while still remaining completely breathable. 

    Q. What testing has been carried out on ProPERLA wall coatings?

    ProPERLA wall coatings have been independently tested by a UKAS accredited laboratory that carried out a 25 year accelerated weathering test. The test aimed to:

    • determine performance after 25 years of accelerated weathering
    • test and analyse thermal insulating properties
    • test and analyse breathability
    • test and analyse the super hydrophobic (highly water repellent) properties of the coatings

    The results of the test showed that ProPERLA wall coatings passed each aspect, demonstrating:

    • BS EN ISO 12572 - Water vapour resistance - water absorption was reduced by 96.3% for ProPERLA Masonry Crème and 93.4% for ProPERLA Facade Coating.
    • BS EN ISO 7783:2011 -  Water vapour diffusion - ProPERLA Masonry Crème had an SD value of 0.56 while  ProPERLA Facade Coating had an SD value of 0.60, showing they had little effect on the breathability of the brick substrate.
    • EAD 040083-00-0404 – External thermal insulation composite - there was an increase of 6⁰C of heat loss of a non-treated wall in comparison to the coated walls, demonstrating heat retaining properties of the coatings.
    • EAD 090062-00-0404 – after the 25 year test, there were no signs of deterioration in performance or appearance, demonstrating a 25 year lifespan for both coatings.

    Following the results of the independent testing, ProPERLA wall coatings were verified by the Energy Saving Trust following their review process.

    Call 0161 763 7074 to speak to one of our technical advisers for further advice on our range of ProPERLA coatings and how they can help with damp.
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