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Reactive silicate sealer that penetrates 2–4 inches into concrete and forms insoluble calcium silicate hydrate crystals within the concrete matrix — permanently densifying and waterproofing from within. Unlike surface coatings, RadonSeal cannot peel, chip, or blister because it becomes part of the concrete. Effective against water vapor transmission, radon mitigation, and efflorescence. One 5-gallon pail covers 500–1,000 sq ft.
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