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Product Reviews
By Simon Escott

Very good product. As mentioned by others you have to make sure you clear of excess and this takes effort. Now real test as winter approaches. In hindsight personally maybe should have gone for colour enhancer or wet look sealer to show off effort of looking after stone!

By Alfred Blair-Smart

The contractor who laid out the back garden left it to me to seal the sandstone and I am glad that I found Smartseal. It effectively seals and enhances the stone without any discolouration when finally dry. An excellent product which I can thoroughly recommend.

By Lesley Edwards

Easy to apply. But a little difficult to make sure none stays on top of the slab. Looks good and certainly made my patio look fresher. Time will tell over the winter months with the rain how well it stacks up

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Natural Stone Sealer - DRY FINISH

High Quality, Impregnating & Breathable | Durable Sealer for Sandstone, Limestone , Slate, Stone Internal & External

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Product Description

Natural Stone Sealer with a 'DRY' Invisible Finish

Effective impregnating sealer for sandstone, limestone, granite and slate

Smartseal Indian Sandstone Sealer and Natural Stone Sealer is a high quality, clear, solvent free acrylic impregnating, breathable coating system. Application of the sealer will alter the chemical structure of the porous sandstone or natural stone 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'
  • Resistant to algae, lichen and staining
  • Dry finish
  • Average coverage: 1st coat 4 - 8 m per litre ( 4m2 Sandstone- 8m2 Slate & Granite) 2nd coat 8 - 16 m per litre (dependant on porosity and finish of the surface)
  • Application by roller or sprayer
  • Touch dry 2 - 3 hours
  • Fully waterproof 24 hours
  • Suitable for Sandstone, Limestone, Terracotta, Travertine, Slate and Granite
  • Can be used externally or internally

PREPARATION: Pre treat surface with appropriate cleaning product. If required, fully clean off using a pressure washer and leave to dry thoroughly for at least 3 days. In order to apply sandstone or natural stone sealer, the area must be clean, dry and free from contamination

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

**If applied to a surface where a "sweep-in" pointing compound has been used within the last 6 months, the natural stone must be fully cleaned with Smartseal Residue Remover prior to sealant application.**

APPLICATION NOTE: Application on vertical surfaces should be to full saturation commencing at the bottom and working upwards. Do not apply in damp conditions and only apply to dry surfaces in temperatures above 13C and no higher than 23C. It is very important to make sure no rain is forecast for at least 8 hours after application. 

Depending on the stone/surface, more than one coat may be required. For most porous stones, a 2nd lighter coat can be applied once touch dry (slightly wet). 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.

  1. Shake container well before use
  2. Ensure that surface area is completely clean from dirt & grime.
  3. Allow surface area to dry, will take 3 dry days depending on the weather.
  4. Apply 1st coat to saturation by roller, sprayer or brush.
  5. Apply 2nd lighter 'mist' coat (approx 45 minutes after 1st coat if suitable).
  6. If over application does occur, please remove excess sealer with a dry sponge or cloth.
  7. Avoid walking on surface 4 hours after application and 48 hours for heavy traffic.

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: Please would you hopefully be able to HELP/best advise waterproof protection Sandstone Window Mullions on a bay window 1911 terraced house Brick (red) built on front of house need to protect the whole of the Bay outside and inside Damp is under the Bay window inside.With the age of the property and living exposed to salt environment(seaside)/wear over time would be most appreciative of expertise advise on the matter if possible.Kind regards Thank-you

Leonard Robinson

A: Hello, we would suggest our Masonry Protection Cream which suitable for use on alltypes of brick work and natural stone would provide the highest levels of protection. You can order a sample to try on a test area, via our website.

Response from Nigel

Q: Is the natural stone sealer suitable for Haddenstone, cast stone cills and ballustrades etc, or would you recommend an alternative product.


A: Yes this natural stone sealer should work very well on all of these surfaces. Samples are available for testing if required.

Response from George

Q: can this be used on an internal stone wall pointed with lime mortar?


A: We wouldn't normally recommended to use the Natural Stone Dry Finish on a wall. Dependant on what you're trying to achieve, it would be best to get in touch with our technical team online or over the phone who will best be able to advise you.

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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