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Patio Sealer (Available in 5 & 25 litre) - High Quality, Durable Sealer for Pre-cast Concrete Slabs & Flagstones

Colour enhancing patio sealer for precast concrete flagstones; gives a "wet-look" finish. Not for use on Natural Stone!

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Product Description

Patio Sealer for Pre-Cast Slabs and Flagstones

Protect patio slabs from staining and weed growth

Smartseal Patio Sealer has been developed to combat the constant problems of staining and weed growth and to enhance the colour and aesthetic appeal of new or mature patio slabs. We feel it is the best sealer for concrete patio slabs. The concrete patio sealer will increase abrasion resistance of the sealed patio and also protect the pointing from erosion. The concrete patio sealer also protects against weed infestation and provides a barrier to contaminants facilitating easy maintenance.

** DO NOT use on Natural Stone or Sandstone

  • Enhances natural colours of Pre-Cast Patio slabs
  • Brings old patios alive
  • Easy to apply Patio sealer with sprayer, roller or brush
  • Protects against loss of colour through UV light
  • Resists oil and stain penetration
  • Inhibits weed and algae growth
  • BS5750/ISO9000 quality approved Patio Sealer
  • For optimum results apply two coats
  • Suitable for most patio slabs
  • Average coverage 4-6 sq metres per litre

Recommended coverage 
First coat: approx 4sq metres per litre
Second coat: approx 5sq metres per litre



Smartseal Patio sealer can be applied using a sprayer unit or roller, at a rate of 4 m2 per litre (pavers) 1st coat & 5 m2 per litre 2nd coat. A two-coat spray application is required to fully cover the jointing sand. The sealer will be tack free within 2 hours at 20°C and foot traffic may be permitted after 4 hours. These times may be increased or reduced depending on the ambient temperature. During the curing cycle, protect from rain. Do not apply when the ground temperature is above 30°C or below 5°C. All equipment should be cleaned with Smartseal cleaning fluid after use.

De-icing salts should not be applied directly on Smartseal block paving, patio or concrete sealers. Salt chemically reduces the temperature at which water freezes and will result in water ingress into the concrete. Subsequent freezing may result in the concrete ‘seal’ being broken by the expansion of water as it freezes and white ‘pitted’ areas may become visible.


New Patios should be swept clean, ensuring there is sufficient pointing in the joints. Existing paving should be pressure washed to remove all surface debris. If the area is contaminated with weeds & moss then it should be treated with Smartseal Fungicidal Wash. Oil and other stains should be removed using Smartseal Cleaner  or Oil Remover. The treated area should then be left to dry and the joints re-sanded & compacted to the lower edge of the paver chamfers with clean kiln-dried sand. Moisture in the paver & sand will inhibit penetration of the sealer and produce whiteness.

Technical & Test Data

Smartseal Patio sealer has been tested by the TRL (Transport Research Laboratory) and certified that it meets the SRV (Skid Resistance Value) for all categories of paving for local authority pedestrian areas and when heavily trafficked is suitable for special applications where risks of skidding are high as laid down in the UK Highway Authorities Tender Specification. Copies available on request.

Specification Clause

“Newly laid Patio paving shall be treated with Smartseal Patio sealer to protect and stabilise the paving and pointing. application will enhance surface colour and increase abrasion resistance. All materials should comply with ISO9002 for Quality Assurance. All work should be carried out in conjunction with the manufacturer’s current technical data sheet and instructions for use”.

Health & Safety

Flammable liquid. Do not smoke. Keep application area well ventilated. Wear respirator when applying. Store in a cool place. Flash point 40°C (Abel-Closed Cup). Refer to the Health & Safety Data Sheet for further information.

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We offer a delivery service across Ireland for all of our products. 

We provide a comprehensive guarantee of quality and ensuring a reliable nationwide delivery service to all our customers is very important. It does not matter if you live in Dublin, Cork, Sligo or Limerick, our service is as consistent and reliable as can be. This is a testament to the many satisfied customers that have commented on our delivery service over the years. 

We can deliver to another address if you are not going to be in to receive the products. If you notify us with clear delivery instructions, we can also leave with a neighbour or somewhere at your property without a signature.

It is also our aim to monitor our stock levels closely to ensure we can always fulfill demand and make sure products are sent out as soon as possible.

Please read the section relating to deliveries under our Terms and Conditions.

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