This proprietary blend of silane and siloxane penetrates into the pores of the concrete and masonry to reduce scaling. RadonSeal Plus Deep-Penetrating Concrete Sealer (5-Gallon) - Basement Waterproofing & Radon Mitigation Sealer | Seals Concrete Against Water, Vapor, and Radon … The best choice for a concrete sealer is a silicate sealer. Properly preparing the area to be sealed plus choosing the right sealant often are the difference between successfully sealing basements and crawlspaces or having to return to reseal. RadonSeal Plus Deep-Penetrating Concrete Sealer (5-Gallon) - Basement Waterproofing & Radon Mitigation Sealer | Seals Concrete Against Water, Vapor, and Radon … Figure 1 - Typical radon entry routes in poured concrete foundation walls and floors. It is non-toxic and 0-VOC. RadonSeal Plus Deep-Penetrating Concrete Sealer (2.5-Gallon) - Basement Waterproofing & Radon Mitigation Sealer | Seals Concrete Against Water, Vapor, and Radon Gas Titebond 3251 Radon Sealant, 10.1 Oz, Gray A surface sealer is not a great choice, as it would not comprehensively block out the gas. RadonSeal Deep Penetrating Concrete Sealer is formulated to permanently seal, strengthen and protect, poured concrete, concrete blocks and cinder blocks. Soil gas containing radon can enter a house any place it finds an opening where the house is in contact with the soil. Therefore, the solution to this problem would be to use a quality concrete sealer specifically designed to block out radon, methane, and similar harmful gases. These radon sealers are used by mitigators to fill large openings in concrete walls and floors. Radon sealer basically falls into 2 categories: The most common radon sealers are urethane based caulks. RadonSeal Deep-Penetrating Concrete Sealer is formulated to permanently seal poured concrete and concrete blocks. This self-leveling acrylic blend helps create a uniform topcoat sheen, so it is ideal for multiple surfaces including metal, vinyl, concrete and glossy surfaces. We have been distributing RS in Canada for 6-7 years with great success. RadonSeal penetrates up to 4 in. In this image potential entry routes for radon in homes with poured concrete foundations are shown. RadonSeal Penetrates into concrete (up to 4"), chemically reacts, and seals the capillaries and pores that make concrete porous. The best basement sealer for your foundation walls and concrete floor against water seepage, vapor transmission and even radon gas. A silicate based waterborne sealer to penetrate porous concrete and fill the pores creating a much more solid product. into the concrete, to block vapor transmission, water seepage and radon gas. 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