Gruen Waterproofing For Shower Systems

Build a dependable, leak-free shower with Gruen waterproofing. The system includes a high-performance membrane roll, preformed inside and outside corners, and ready-to-install collars for valves and pipes. Components work together to block moisture, protect substrates, and streamline installation.

Gruen 4.4" Valve Membrane

• Seals around mixer valves and shower fixtures
• Installs quickly without extra sealants
• Tear-resistant waterproof fabric

Gruen Pipe Collar for 1" Pipe

• Preformed seal for 1" pipe penetrations
• Prevents leaks at pipe openings
• Works with membranes, tile adhesive, and thin-set

Gruen 90° Outside Corners

• Preformed outside corner coverage
• 4-mil durable waterproof fabric
• Fast, precise installation

Gruen 90° Inside Corners

• Preformed inside corner coverage
• 4-mil durable waterproof fabric
• Fits with membranes, thin-set, and tile adhesive

Gruen Waterproofing Membrane Roll

• High-strength polyethylene with dual-sided fleece
• 32.8' length by 3' 3" width, 108 sq ft coverage
• Waterproof underlayment for showers, baths, and floors