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Concrete Sealer X-3S


Solvent Based Stain Repellent – Natural (Invisible) Finish

Currently in Stock. Ships in 1-2 Business Days by USPS or UPS Ground (1-4 Business Days depending on your location).


Concrete Sealer X-3S is a solvent based special blend of polysiloxanes/silanes which crosslink below the surface of the concrete. This makes the concrete surface water and stain repellent allowing the removal of spills more easily. Application of the sealer is either alone or on top of Concrete Sealer X-1 or Concrete Sealer X-2. This will provide double protection of the concrete with both deep sealing and a repellent finish.

Concrete Sealer X-3S is for all types of decorative and stained concrete pavers, concrete aggregate driveways and concrete walkways, bricks, clay tiles, mortar, grout and any natural stones. Use this sealer for above grade plaster and stucco to provide a breathable barrier against water, stains and acids. The sealer will also seal swimming pools and fish ponds to prevent water escaping through the concrete capillaries and pores.

It is also used in dog kennels and agricultural institutions to provide stain resistance which assists in the maintenance of these enclosures. This concrete sealer leaves an invisible or natural finish (no sheen) after application and the surface will not be slippery.

Concrete Sealer X-3S has also been proven as an effective anti-graffiti barrier. It prevents paints, aerosols and crayons from adhering to the wall and allowing easy removal if they do. Concrete Sealer X-3S is perfect for use in concrete ponds, pools, holding tanks and water features.

This sealer is a ready to use sealer and does not require the addition of an activator. This means that it does not have a limited pot life unlike some competitive sealers and it has a shelf life of at least 6 months.


concrete sealer X-3 repelling water

Repelling colored water on a concrete paver.

Application of Concrete Sealer X-3S

Concrete Sealer X-3S is easy to apply using a brush, medium nap roller or low pressure sprayer at any temperature between 40-80°F. Prior to treatment the surface does not need any special treatment but it must be water, oil and dust free to allow proper penetration of the sealer. Check the surface of your concrete before applying this sealer to make sure it absorbs drops of water within 20-30 seconds. If it beads up then use Eco Concrete Etcher prior to applying this sealer. Coverage rate is approximately 200 to 400 sf/gal/app depending on the concrete porosity. Apply two coats 2 to 4 hours apart rather than one thick coat. Allow to cure for 24 to 48 hours without rain.

Concrete Sealer X-3 Test

Right hand side of the paver treated with Concrete Sealer X-3 and cured for 24 hours. Left hand side untreated.

These pictures show colored water added to the pipe and the amount of water that leaked out into the paver.


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