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Product Reviews
By Suzanne Shearer

Used this limestone sealer to protect the hearth of my fire when Im cleaning it, it works great I no longer get the wet marks when Im cleaning would highly recommend

By Jeff Dray

Used to stabilise and seal the interior of crumbling sandstone mullion windows - worked really well

By Craig S

Used the sealer on limestone patio. It soaked up much more than expected so be sure to order enough. I recon about 30% more. But it seems to have done a good job at sealing the stone as i can see water beading off nicely.

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Limestone Sealer - DRY (Invisible Finish)

STAIN RESISTANT, High Quality, Durable Protective Sealer. Impregnating Sealer for Limestone Patios and Floors: Coverage: up to 8 m² per litre

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Product Description

Seal and protect a limestone patio or floor

Can be used externally or internally

Impregnating sealer for Limestone slabs and floors

Smartseal Limestone Sealer is a high quality, clear, solvent free acrylic impregnating coating system. Application of the sealer will alter the chemical structure of the porous limestone providing a excellent water repellent and stain resistant surface.

  • One coat application to saturation, or for best results, apply a second coat once 'touch dry'
  • 1 x 5 litre will treat up to 40 m
  • Resistant to algae, lichen and staining
  • Will leave surface "Dry/Natural"  dependent on porosity of surface
  • Average coverage: 1st coat 5 - 8 m per litre, 2nd coat 8-16 sq/m (dependant on porosity and finish of the surface)
  • Touch dry in 2 - 3 hours
  • Fully waterproof 24 hours
  • Lifespan of approx. 5 years can be expected


PREPARATION: Prior to application of limestone sealer ensure surfaces to be sealed are clean, dry and free from contamination. If algae or stains are present pre treat prior to cleaning with a appropriate cleaning product. If required, fully clean off using pressure washer and leave to dry thoroughly for at least 3 days.

Always test product on-site, in an inconspicuous area, to ensure you fully are satisfied with the final appearance/ colour of the surface. 

**If being applied to a recently laid external Limestone patio or path, where a "sweep-in" pointing compound was used, as a precautionary measure we advise the natural stone must be fully cleaned with Smartseal Residue Remover prior to sealant application.**** Please get in touch for further advice.

APPLICATION: Shake container well before use. A suitable pressure sprayer, roller, sponge or brush is recommended taking care to avoid any pooling. Application on all substrates should be to full saturation and on vertical surfaces commence at the bottom and work upwards. For internal surfaces application by a suitable cloth is appropriate. Do not apply in damp conditions or at temperatures below 13-23C. 

Applying one coat to saturation is normally sufficient. For best results, apply one coat to saturation and once touch dry, a 2nd lighter coat can be applied ('wet on wet' finish). If over application does occur on either coats, excess sealer can be removed with a dry roller or sponge. Ensure this is done within 45 minutes.

All equipment should be cleaned with water immediately after use.

SHELF LIFE: Store away from direct sunlight and sources of heat. Protect from frost.
12 months shelf life (in original sealed container). Once opened use within 3 months.

Product FAQs

Q: Hi. Is product 'Limestone Sealer - DRY (Invisible Finish)' suitable for use as a weather protection coat on bath stone (limestone)? specifically does the coating affect the breathability of bath stone?

Rich Wesson

A: The Limestone Sealer is breathable.

Response from Alex

Q: Hi looking for a product to seal lime reconstituted window villa- is this product suitable

Wendy Fleming

A: The Limestone Sealer Dry will be suitable for your surface and adhere correctly.

Response from Ricky

Q: I have seen this product recommended for sealing a new limestone fireplace. Is it guaranteed to not change the colour/ appearance of the stone. Many thanks

Belinda Markey

A: The Limestone Sealer Dry Finish is an invisible finish that won't change the colour of the stone once it's fully cured.

Response from Ricky
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We provide a national delivery service for our block paving sealer, pattern imprinted concrete sealer, roof coatings and tarmac restorer on a standard 2 - 4 working day basis. Dependent on weight, this is normally done by pallet or parcel carrier.

If you need products delivered quicker, for a small additional charge, orders placed before 1.30pm can be delivered within 1 - 2 working days to most parts of the UK, although this is dependent on the courier service in your area and the product/s ordered. If you require this service, please check on area availability by calling 01268 722500.

Our commitment is to supply all orders as placed and we offer a comprehensive guarantee of quality. Providing a reliable delivery service to all our customers is most important to us and this is backed up by the many satisfied customer testimonials we have received over the years.

If you need an order delivered to a different address, left somewhere at your property without a signature or left with a neighbour, just let us know.

We also try to maintain 100% stocking levels of our products at all times, so an immediate despatch is virtually guaranteed.

Our product returns policy can be viewed by visiting our Terms and Conditions section.

*Free delivery on orders over £75 are subject to the delivery address location.

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