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Best Limestone Sealer for Patios and Floors

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Customer Reviews

I've been fighting a losing battle with my limestone patio as it is very porous and is easily stained. It is so delicate that a jet was can damage the surface so I was looking for a product that would help protect the stone. I first used Smartseal's Drive clean Xtreme which was fabulous. Applied, waited an hour and used a hose and a brush. After leaving the patio for three days I then applied the Natural stone sealer using a spray. Couldn't have been easier.

By Mark Fairclough

A good product and arrived after one day of purchase

By Simon Yates

Excellent product

By Tiberiu Curelaru

Does what says on the label.

By Tiberiu Curelaru
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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 (for best results, apply 2nd coat 'wet on wet' within 30 minutes)
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 5 - 8 m per litre
Application by roller or sprayer or suitable cloth
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 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 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: 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.

If over application does occur, remove excess sealer with a dry roller or sponge within 45 minutes of applying.  

One application is normally required, for best results, apply light 2nd coat, within 30 minutes of first application. Do not apply in damp conditions or at temperatures below 12-15C. Shake container well before use.

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 (in original sealed container).