Kauwm Professional Waterproof Membrane for Shower – 5in x 100ft (42 sq ft)

Overview

The Kauwm Professional Waterproof Membrane for Shower is a high-density polyethylene underlayment designed to shield wet spaces from moisture. With a roll size of 5 inches by 100 feet, it covers about 42 square feet, providing a reliable base for showers, bathrooms, saunas, and other damp areas.

Why it stands out

Built with a robust 20 mil thickness, this membrane emphasizes durability and long-lasting moisture resistance. The polyethylene core delivers dependable strength, helping protect substrates behind tile or finish work from moisture exposure. A core benefit is enhanced protection against warping or aging in humid environments.

• High-density polyethylene core delivers lasting strength and moisture resistance in damp environments.
• Fleece on both sides offers a stable anchor for unmodified thin-set mortar, promoting solid adhesion.
• Designed to resist moisture migration, helping keep underlying substrates secure in wet spaces.

Easy to use and adaptable

Installation is simple and flexible. You can freely cut the membrane to the exact length and width needed, and fold it to fit corners and irregular planes. The dual-sided fleece helps the membrane stay in place during tile setting, making it a practical option for DIY renovators and pros alike.

• Cut to fit any layout, then fold to navigate corners and odd shapes.
• Fleece-backed surfaces anchor well with unmodified thin-set mortar for reliable bonding.

Application range

Versatile for a wide range of spaces, this underlayment is suitable for kitchen walls and floors, shower rooms, bathroom walls and floors, and sauna interiors. It works with common tile options such as marble, cement, ceramics, and stone, and can be installed indoors or outdoors in appropriate settings.

• Shower rooms, bathrooms, and sauna areas where moisture is a concern.
• Kitchen walls and floors needing a moisture-resistant base for tile or stone finishes.

Performance and assurance

As a moisture management layer, the membrane helps reduce dampness around tile substrates and may contribute to longer-lasting tile installations. The anti-aging polyethylene core adds resilience, helping protect your project over time. A satisfaction-driven brand approach backs this product, reflecting reliability for both homeowners and contractors.

Installation tips and best practices

For best results, ensure clean, dry surfaces before application. Use straight cuts, align the fleece sides, and bond with unmodified thin-set mortar as you lay out the area. Proper seam management and perimeter detailing will help maximize performance in a given space.