Kauwm Shower Waterproofing Membrane Roll, 3.3x98.5 FT, 323 Sq Ft, 23.6 Mil — Open-Box, 10% Off

WATERPROOF MEMBRANE FOR SHOWER TILE INSTALLATION – 3.3FT x 98.5FT roll, 323 Sq Ft total coverage, 23.6 Mil (0.6mm) thick. Blue HDPE waterproofing sheet creates a moisture barrier between tile assemblies and substrate in shower floors, bathroom walls, sauna rooms, steam rooms, and wet areas. Suitable for new construction and bathroom renovation projects.

COMPATIBLE WITH THIN-SET MORTAR, CEMENT BOARD & TILE SUBSTRATES – Dual fleece-faced surface bonds mechanically to unmodified thin-set mortar on both sides — no primers or adhesives required. Works over concrete, cement board, plywood, and masonry. Accepts marble, ceramic tile, porcelain, and natural stone tile directly over cured membrane. Suitable for floor and wall tile installation indoors and outdoors.

FITS SHOWER FLOORS, WALL TRANSITIONS, CORNERS & CURBS – Flexible membrane cuts with standard scissors or a utility knife and folds cleanly around floor-to-wall transitions, inside corners, shower curbs, linear drain borders, and pipe penetrations. Covers complete shower floor and wall surfaces without specialty tools. Suitable for walk-in showers, curbless shower designs, and tub surrounds in bathroom remodel projects.

23.6 MIL HDPE CORE FOR MOISTURE RESISTANCE IN WET AREAS – Anti-aging high-density polyethylene construction resists water vapor transmission and helps protect tile installations from moisture-related damage including tile delamination, grout deterioration, and subfloor moisture issues. Designed for continuous use in high-humidity environments such as shower enclosures, steam rooms, saunas, and exterior wet areas subject to freeze-thaw conditions.

FOR BATHROOM RENOVATION, SHOWER REMODEL & COMMERCIAL WET AREA PROJECTS – Suitable for DIY homeowners completing bathroom tile projects and professional tile contractors working on shower installations, sauna builds, gym locker rooms, and hotel bathroom waterproofing. Each roll is inspected before shipping. Contact our customer support team for installation guidance or product questions before or after purchase.

Blue HDPE Waterproofing Membrane – 3.3FT x 98.5FT, 323 Sq Ft for Shower, Bathroom & Wet Area Tile Installations What is this waterproofing membrane used for? This 323 Sq Ft Blue HDPE Waterproofing Membrane is designed for use as a moisture barrier in tiled wet areas including shower floors and walls, bathroom floors, kitchen floors, sauna rooms, steam rooms, and laundry areas. It is suitable for both new tile installations and bathroom renovation or shower remodel projects in residential and commercial settings. What surfaces does it bond to? The dual fleece-faced membrane bonds mechanically to unmodified thin-set mortar on both sides. It is compatible with concrete slabs, cement board, plywood, and masonry substrates. Tile materials including ceramic tile, porcelain tile, marble, and natural stone can be installed directly over the cured membrane using standard thin-set mortar. How is it installed? Prepare the substrate surface. Cut the membrane to the required dimensions using scissors or a utility knife. Apply unmodified thin-set mortar to the substrate, embed the fleece face of the membrane into the mortar, then apply a second layer of thin-set over the membrane surface. Allow to cure according to mortar manufacturer guidelines before tiling. The membrane can be folded around corners, curbs, and transitions without tearing. Is this suitable for DIY installation? This membrane is designed for straightforward installation without specialty tools or licensed contractors. It is suitable for experienced DIY homeowners undertaking bathroom tile projects, shower remodels, and sauna room builds. Review complete installation guidelines before beginning your project. Product Specifications: Size: 3.3 FT x 98.5 FT | Coverage: 323 Sq Ft Thickness: 23.6 Mil (0.6mm) Material: Anti-aging HDPE core with dual fleece faces Color: Blue Bond Method: Unmodified thin-set mortar Application: Floors and walls, indoor and outdoor Use: Residential and commercial tile installations Compatible With: Shower systems, linear drains, square drains, shower niches, cement board panels, concrete substrates, bathroom tile layouts, floor heating systems installed beneath tile