Payment Methods Accepted
Buy with confidence

Slate Sealer - Dry Finish (Available in 1 & 5 litre)

StarStarStarStarStar 2 Reviews|(5/5)
Please select a size
In Stock In Stock

Customer Reviews

A good product which served its purpose

By John Briggs From Sheffield

Very helpful, friendly advice on the phone. Prompt delivery. Won't know for a while whether the product (tile sealant) does it's job, though!

By Fran Leeson From Welwyn

Leave A Review

Product Rating  *  *  *  *  *

*All submissions will be checked by our administration team before appearing on the site. Please be patient as we will try and approve your comments as quickly as possible.



Impregnating Sealer for Slate in a DRY Natural Finish

Highly protective slate sealer for slate floors and patios. If used as a slate floor sealer it will not change the appearance of the slate, leaving it looking totally natural.

Smartseal Slate 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.

One coat application to saturation
1 x 5 litre will treat up to 50 m²
Resistant to algae, lichen and staining
Will leave surface "dry/natural" looking dependent on porosity/colour of surface
Average coverage 8 m² per litre
Application by cloth, roller or sprayer
Touch dry 2-3 hours
Fully waterproof 24 hours
Lifespan of up to 5 years can be expected
Suitable for Slate surfaces 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 the slate sealer being applied.**

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. 

Any excess must be removed within 45 minutes of application. This can be done with a dry roller or cloth.

One application is normally required, do not apply in damp conditions or temperatures below 12-15C. Shake container well before use.

All equipment should be cleaned with water immediately after use.

Finish may vary according to the type of stone.

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).

Frequently Asked Questions

  • I have seen your anti slip product online, is this suitable to add with the sealer for my natural stone patio.?

    Anti Slip is not required for natural stone surfaces. Natural stone sealer penetrates into the stone so would not leave any resin on the surface.