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Does Sealing Pavers Prevent Weeds?

Sealing Paving to prevent weeds

Many homeowners in the UK will be familiar with the sight of weeds taking over their outdoors spaces, especially on patio & driveways pavers & concrete slabs. Weeds between paving slabs can be a real nuisance to prevent long-term. But what causes them & how can keep your paving weed free? In this article we are going to answer some of the most common questions regarding preventing weeds & other green growth on paving, and explain exactly how you can prevent them.

What Causes Weeds, Moss & Green Growth on Block Paving?

There are a number of types of unsightly growth on and in-between paving, which include:

  • Weeds
  • Green growth & algae
  • Moss

The route cause of this growth is moisture, which allows it to quickly multiply and spread across the paving. In the case of green growth on the paving slab itself, this is caused by the moisture absorbing into the porous concrete surface, which ultimately becomes a hot bed for algae & fungus. This is contrary to what many believe, as a large proportion of homeowners do not realise how absorbent building materials such as pavers are.

How Can You Prevent Weeds, Moss & Green Growth On Pavers?

Simply killing the weeds or removing any moss will solve the issue short-term and will not prevent the underlying issue that is causing the growth.

To prevent any growth on paving slabs, it is crucial to stop this water absorption. Paving 'sealers' are treatments that create a waterproof barrier on the surface of paving, stopping this transfer of moisture. While there are many of these products on the market that refer to themselves as 'sealers', this is a term that should be treated with caution.

A sealer is generally a product that creates a waterproof seal on the material, that prevents any moisture from entering the paving, but also prevents any moisture from escaping. This can be catastrophic as moisture will simply continue to build up until either the treatment fails or the paving becomes damaged, as the moisture attempts to escape.

This is why any waterproofing treatment for exterior surfaces must be 'breathable'. A breathable treatment is one that has an SD value of under 1, meaning that water vapour can freely travel through the surface, By maintaining breathability, water vapour to escape and maintains a dry material.

Does Sealing Block Pavers Prevent Weeds & Moss?

Using a highly breathable block paver sealer such as ProPERLA Paving Impregnator will significantly reduce the growth of moss, weeds & algae, meaning block paving remains looking clean for years to come. It does this by reducing water absorption by up to 95%. By keeping the paving stones dry, the super hydrophobic technology will not allow any growth to attach, along with dirt which can be easily wiped straight off the surface.

This keeps pavers looking like brand-new for years to come and thanks to the 10 year manufacturer's guarantee, you can be assured that your paving is completely protected long-term.

How Do I Treat My Pavers With ProPERLA?

As the most advanced nano-technology available in the UK, ProPERLA is a specialised product that must be applied by experts.

We have a number of approved ProPERLA applicators up and down the UK who have attended our rigorous training program to ensure they apply the treatments to the highest level. To an ProPERLA applicator, simply type your postcode in our applicator finder tool and find your nearest applicator, who can carry out the treatment for you.

Want to speak to one of our technical advisers for further advice on ProPERLA Paving Impregnator? Send them an email to info@properla.co.uk & one of the team will be on hand to assist you with any questions you may have.

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