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Concrete Sealer X-1


Water-Based Densifier & Hardener

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-1 is a permanent silicate-based deep penetrating chemical hardener and sealer. The product chemically bonds to the concrete to become part of its integral structure which guarantees that it will last for the life of your concrete. It is highly effective in making concrete physically stronger and denser, protecting it against frost and salt. The sealer also increases its resistance to stains, acids, alkalis, moisture, mold, and mildew. This sealer will cure damp and wet basements by preventing hydrostatic water from penetrating through the concrete. It will also stop dusting, efflorescence, spalling, pitting, crumbling and prevent mold, mildew, and algae growth. The sealer significantly reduces the level of Radon gas penetration which causes lung cancer according to the EPA.

How Concrete Sealer X-1 Works

Application of Concrete Sealer X-1

Concrete Sealer X-1 treats damp or wet concrete basements in all commercial and residential concrete applications. Use on concrete floors, walls, driveways, sidewalks, garage floors, warehouse floors, storage tanks, pipes, blocks, grout, mortar, and stucco. It also extends the life of exterior wood including fences, patios, decks, cedar, and wood shingles. We do not recommend this sealer for decorative, colored, stamped, or aggregate concrete without prior consultation.

The surface 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. The sealer Covers approximately 200 to 400 sf/gal/app depending on the concrete porosity and we recommend rather than one thick coat. Application time between coats is 2 to 4 hours and allow to cure for 24 to 48 hours without rain.

Concrete Sealer X-1 penetrates through the capillaries of the concrete to a maximum depth of up to 4″. It chemically neutralizes damaging chemicals to form a hard insoluble structure based on calcium silicate and calcium hydroxide. Unlike surface coatings, this sealer will not be damaged by efflorescence or be worn down by heavy traffic because it is permanent.


Concrete Sealer X-1 leaves a natural finish (no sheen) after application. It is UV resistant, non-yellowing, breathable and the surface will not be slippery. This sealer is paintable after curing because it is not a repellent coating. The sealer will increase paint adhesion because it neutralizes the alkalis in the concrete preventing saponification of the paint. Adhesives and epoxy coatings can also be applied over the sealed concrete with no adverse effects.

Concrete Sealer X-1 is environmentally friendly, non-toxic, and non-flammable because it does not contain chemical solvents or release any VOC or noxious fumes.


Quart (2 pounds) and gallon (9 pounds) containers ship by priority mail. 5 (2 x 2.5) Gallon Pails (47 pounds) ship by FedEx ground. 30 Gallon (291 pounds) and 55-gallon drums (517 pounds) ship by common carrier. For free shipping, the drums must ship to a commercial location with a loading dock or be picked up at the carrier’s terminal. We can arrange residential delivery with a lift gate if necessary for an additional charge. Please contact us for further details.

1 Gallon Concrete Sealer X-1

1 Gallon of Concrete Sealer X-1


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How Concrete Densifier Works

How Concrete Densifier Works