A: Cinder blocks are very difficult to seal from the inside. They are vey porous and let water pass through easily. If you can seal form the outside, then use LastiSeal Brick & Concrete Sealer. Preventing water from getting into the block is the best method to preventing seeping on the inside. If the outside is painted or below-grade, then sealing from the inside is the only option. For cinder block, you should use RadonSeal PLUS followed by Ion-Bond Armor 10-days later. This is the most reliable way to seal cinder block against moisture transfer from the negative-side. This process will not prevent water seepage from cove-joints, cracks, or gaps. We have several detailed articles on our website that discuss cinderblock foundation. Definitely worth the read.
A: Thank you for the question. RadonSeal can be applied 3 hours after the concrete has been poured, but we recommend waiting 28 days before applying the sealer. This will allow the pores and capillaries of concrete to fully develop while it cures. Cheers, ---------- Craig - Product Tech RadonSeal
A: Thank you for your question! Acid etching not only will help create a proper surface profile for the epoxy coating but will also enlarge the pores of the concrete. This helps the concrete absorb RadonSeal internally, deep below the surface, so that it will not interfere with the bond of paints, epoxy, adhesive, and similar. Acid etch the concrete. Neutralize the acid/rinse with water thoroughly. Let the concrete dry for 2-3 days. Apply RadonSeal Penetrating Concrete Sealer (we recommend a quick test spot to ensure the concrete is properly absorbing the sealer). Erring on the side of caution, wait 7-10 days before applying coatings to the surface. Cheers, ---------- Craig - Product Tech RadonSeal
A: RadonSeal is for clean, dry, and porous concrete. This is a penetrating sealer, not a coating or liner. If the conditions for application are met, then it can be used. It will seal, neutralize, and strengthen, concrete preventing damage caused by rebar corrosion/expansion.
|Name||Extreme 5 gal. Bright White Flat Latex Interior/Exterior Basement and Masonry Waterproofer||Plus 5 Gal. Deep Penetrating Concrete Sealer for Foundations and Basement Floors||5 Gal. Plus Penetrating Concrete Sealer||5 Gal. Penetrating Waterproofing Brick Paver and Concrete Sealer|
|Container Size||5 Gallon||5 Gallon||5 Gallon||5 Gallon|
|Paint/Stain Features||Mildew Resistant,Mold Resistant,Tintable,UV/Fade Resistant||Abrasion Resistant,Algae Resistant,Any Angle Spray,Chemical Resistant,Densifier,Dries Clear,Driveable Surface,Durable,Fast Drying,High Foot Traffic,Inverted spray ability,Low Odor||Abrasion Resistant,Any Angle Spray,Chemical Resistant,Densifier,Dries Clear,Driveable Surface,Durable,Fast Drying,High Foot Traffic,Low Odor||Abrasion Resistant,Algae Resistant,Chemical Resistant,Dries Clear,Driveable Surface,Durable,High Foot Traffic,Low Odor|
|Surface Location||Basement Wall,Exterior Wall,Foundation,Garage Wall,Pool||Basement Floor,Basement Wall,Driveway,Exterior Wall,Foundation,Garage Floor,Garage Wall,Patio||Basement Floor,Basement Wall,Driveway,Exterior Wall,Foundation,Garage Floor,Garage Wall,Patio,Pool Deck||Basement Floor,Basement Wall,Driveway,Exterior Wall,Garage Floor,Patio,Pavers,Pavers|
|Base Material||Acrylic||Other||Water Based||Water Based|
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