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RadonSeal Plus Concrete Sealer – Deep Penetrating Waterproofing for Basement Floors, Foundation Walls & Concrete Block – Reduces Moisture & Strengthens Concrete (5 Gallon)
- Deep-Penetrating Concrete Sealer
- For Basements & Foundations
- Long-Lasting Internal Seal
- Strengthens & Hardens Concrete
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Key features
Deep-Penetrating Concrete Sealer
RadonSeal Plus penetrates deep into concrete and reacts within the pore structure to seal capillaries, helping reduce water intrusion and moisture vapor transmission through basement floors and foundation walls.
For Basements & Foundations
Helps reduce moisture seepage through concrete floors and walls by penetrating and reacting within the concrete. Ideal for basement floors, foundation walls, slabs, and concrete block exposed to ground moisture.
Long-Lasting Internal Seal
Unlike acrylic or epoxy coatings that sit on the surface, RadonSeal reacts inside the concrete to form a durable internal seal that will not peel, blister, or wear away over time.
Strengthens & Hardens Concrete
Chemically densifies and reinforces porous or weak concrete, reducing dusting and improving resistance to water intrusion, salts, and freeze-thaw cycles.
Easy DIY Application
Apply with a sprayer, roller, or brush. The water-based formula penetrates deeply into the concrete where it reacts and cures internally, no surface coating or film.
Paintable & Coating-Compatible
Prepares concrete surfaces for coatings by helping reduce moisture movement through the substrate. Compatible with concrete paints, epoxy coatings, clear sealers, overlays, and adhesives.
Ideal for Basements & Foundations
Suitable for basement floors, foundation walls, concrete slabs, garages, and warehouses. Works on poured concrete and concrete block (CMU) foundations.
Covers Up to ~1000 Sq Ft Per 5 Gallons
Coverage varies depending on concrete porosity. Suitable for basement floors, foundation walls, slabs, and concrete block to help reduce moisture vapor transmission.
NATURAL, Invisible Finish
Does not change the appearance of concrete. No gloss, no darkening, and no surface film.

RadonSeal Plus Concrete Sealer – Deep Penetrating Waterproofing for Basement Floors, Foundation Walls & Concrete Block – Reduces Moisture & Strengthens Concrete (5 Gallon)
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