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Schluter KERDI 323 is a sheet-applied waterproofing membrane that bonds to walls and floors to create a watertight layer behind tile. It is the pro-standard choice for showers, tub surrounds and other wet areas, installed over the substrate before tiling. Compared with liquid roll-on membranes, it gives a consistent factory thickness and goes up fast in large sheets, but it demands careful overlaps and seams. Tilers and remodelers trust it for long-term moisture protection.
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Installers rate KERDI highly for reliable waterproofing and fast coverage. Complaints center on seam care and the need for proper prep.
Schluter KERDI 323 is a sheet-applied waterproofing membrane. It bonds to walls and floors to create a watertight surface behind tile.
It is installed over the substrate before the tile goes down. It is used in showers, tub surrounds and other wet areas, where it helps protect the structure from moisture over the long term.
