Masterseal 545 is a polymer-modified, two-component, cementitious-based elastic waterproofing membrane suitable for concrete and masonry elements and structures as well as for permanent contact with potable water. It is applied by brush, roller, spatula or spray, creating a cementitious membrane, resistant to both positive (direct) and negative (reverse hydraulic) hydrostatic pressure, which is distinguished by its ability to bridge cracks.
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