Blue Max® Caulk Crack Repair & Sealant is a thick, blue, elastomeric, waterproofing rubber primarily used as a filler & sealer for masonry, cement backer board, ICF, wood, metal, and EPDM. Fill & seal joints, holes, valleys, cracks, around vents, low spots, flashings & seams up to 5/8" wide
1 Review
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Happy with the results!
Used this to seal up our shower and tub and it worked great!! Was quick and easy to use and am very happy with the results