Blue Max® Trowel Grade Multi-purpose Waterproofer is a thick, blue, elastomeric, waterproofing rubber primarily used as a filler & sealer for joints, holes, valleys, cracks, around vents, low spots, flashings & seams up to 5/8" wide.
1 Review
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Filled cracks with a paint brush
I brushed this onto the seams prior to applying Maximum Stretch. I was very impressed with this product. It spread like butter and dried to a hard/smooth barrier. I am curious what other applications I could use it on.
