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Efflorescence Blocker ®

Efflorescence Blocker ®

Regular price $79.00
Regular price Sale price $79.00
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Efflorescence Blocker is a versatile product designed to block and prevent efflorescence and alkali from rising to the surface of a porous substrate. It is ideal for applications where efflorescence is not preventable and is constantly being maintained. It is typically used on floors where waterproofing membranes have failed or were not installed or in other applications where moisture penetration is unavoidable. The finish results in a natural appearance, with some substrates slightly darkening. Please keep in mind, Efflorescence Blocker is a preventative — if the surface already has efflorescence staining, it will need to be removed first.

Please Note: Current efflorescence staining will need to be removed first. Please see Restore-N-Prep.


What It Is: A sealer that blocks efflorescence and alkali from showing on the surface

Surface Types: Concrete, CMU Block, Stucco, EIFS (see TDS for full list)

Formulation: An Acrylic Co-polymer Emulsion

Coverage Rate: Approx. 150-400 sq. ft. / gallon (See TDS for details)

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How To Apply

Apply a thin coat, using just enough material to wet the substrate. DO NOT apply in a flood coat.

Superior Exterior Durability

Resists hot-tire pickup and has excellent scratch and stain resistance.

Use As A Universal Primer

Water and stain-resistant coating that prevents costly construction repairs.

Blocks Efflorescence and Alkali from Coming to the Surface

Prevents mineral and alkali staining and is Ideal for planters and groundwater penetration.

Safe For The Applicator, End-User, and Environment

Contains 0 g/L V.O.C.’s, no carcinogens, very low odor, non-flammable, and non-toxic formula.