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Product Reviews
By Colin Watts

Very effective sealer Beware not to apply for several weeks on newly laid slate 4 litres covered 25 sq m easily

By Pascal GaucherFROM Southampton

Amazing cool enhancer for slate. I followed the recommendation and stunned by the results. It has now been a few weeks and the colour is still the same. Brilliant sealer! I wish I could add photos.

By Vinny Buckley

Was expecting it be high gloss for my slate floor in kitchen alas no

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SLATE SEALER- Enhanced Finish (Sample,1 & 5 litre) Leaves Slate Looking 'Damp'

(Available in Sample, 1 & 5 litre) Long Lifespan, Enriches Natural Colours- Easy to Apply. Impregnating sealer for Slate: Coverage up to: 12 m² per litre

In Stock
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Visa Electron
Product Description

Impregnating Sealer for Slate

Seal and protect Slate tiles and floors

Smartseal Slate Sealer and Natural Stone Sealer is a high quality, clear, solvent free acrylic impregnating coating system. Application of the sealer will alter the chemical structure of the slate or natural stone providing a excellent water repellent and stain resistant surface.

  • 1 x 5 litre will treat up to 50m on average, first coat
  • Highly resistant to algae, lichen and staining
  • Will leave surface 'damp' or 'wet' looking dependent on porosity of surface
  • Average coverage 10 m per litre first coat and 20 m per litre second coat, dependent on porosity and finish of surface
  • Application by roller or sprayer or suitable cloth
  • Touch dry 2-3 hours
  • Fully water-resistant in 24 hours
  • Lifespan of approx. 5 years can be expected
  • Suitable for Limestone can be used externally or internally

PREPARATION: Prior to application of Slate sealer or natural stone 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 applied to a surface where a "sweep-in" pointing compound has been used, the natural stone must be fully cleaned with Smartseal Residue Remover prior to sealant application.**

APPLICATION: A suitable  pressure sprayer or roller 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.

Remove any excess after a maximum of 45 minutes via a dry roller or cloth. 

Do not apply in damp conditions nor temperatures below 15C. Shake container well before use.

All equipment should be cleaned with water immediately after use.

Finish may vary in accordance to type of stone applied to.

Always apply to a test area first.

SHELF LIFE: Store away from direct sunlight and sources of heat. Protect from frost.
12 months (in original sealed container).

Product FAQs

Q: I have used the slate colour sealer today. It has now been 3hrs and if i touch it it shows a finger print. How long before I can walk on it

Trevor Burton

A: If the sealer has not been over applied, you can generally 'tip toe' across it after about 4 hours. The paving would be fully dry after 24 hours. The polymers in the sealer will continue to harden for 7 days. Hope that helps.

Response from Rick

Q: Can this sealer be used on a honed granite hearth where a log burner is going to be installed

Rob Walker

A: If it is on parts of the hearth not exposed to extreme heat, it would be fine. Samples are available through our website for testing.

Response from Alex

Q: Can this be used Inside

Emily Moore

A: Yes, the natural stone sealer could be used internally.

Response from George
Ask Us A Question
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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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