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At a Glance
Why Choose This Product
Protects the opening where a 3/4" pipe passes through the shower wall
Designed for showerheads and other inlet or outlet pipes
Provides durable coverage around the pipe penetration
Integrates with GURU W-S and compatible bonded waterproofing membranes
0.3 perm rating supports moisture control in wet-area assemblies
Meets ANSI A118.10 and A118.12 and is IAPMO listed
Product Information
The GURU® W-S Pipe Seal creates a secure waterproof transition where a 3/4" showerhead, inlet, or outlet pipe passes through a tiled shower wall. This pipe collar reinforces the opening between the plumbing and surrounding bonded membrane, helping preserve continuous waterproof protection at one of the shower assembly’s most vulnerable points.
Made from 20 mil WATER-STOP membrane, the collar provides dependable coverage around the pipe opening while integrating with GURU W-S Membranes and compatible bonded waterproofing systems. Its 0.3 perm rating helps limit vapor transmission, supporting reliable performance behind tile in moisture-exposed areas.
W-S Pipe Seal meets ANSI A118.10 waterproofing and ANSI A118.12 crack isolation requirements and is IAPMO listed under product files 9205 and 9990. Rated for residential and light commercial service, it provides added confidence that critical shower pipe penetrations are properly protected.
Product Resources
Common Questions
The GURU W-S Pipe Seal protects the point where a 3/4" showerhead, inlet, or outlet pipe passes through a tiled wall. It connects the pipe penetration to the surrounding bonded waterproofing membrane, helping prevent the opening from interrupting the continuous moisture barrier behind the finished tile.
The pipe collar is designed for a 3/4" plumbing penetration and is commonly used around showerheads and other inlet or outlet pipes. Because nominal pipe size and actual outside diameter can differ by pipe type, confirm that the opening fits the specific plumbing component before installation.
Yes. The 20 mil WATER-STOP membrane forms the waterproof body of the collar. Once incorporated into the surrounding bonded membrane system, it reinforces the opening around the pipe so the shower wall retains a continuous waterproof layer before the finished tile is installed.
The pipe collar is designed for GURU W-S Membranes and compatible bonded waterproofing systems. The collar, bonding material, and surrounding membrane must be compatible with one another, so follow the requirements of the selected waterproofing system when completing the entire shower assembly.
Position the pipe seal over the compatible 3/4" plumbing penetration and bond the square membrane section to the surrounding waterproofing layer before installing tile. The collar should lie flat and connect fully without gaps. Follow GURU’s instructions for surface preparation, bonding materials, placement, and sealing.
The pipe seal measures 5-7/8" × 5-7/8" overall and has an approximate total thickness of 20 mil. Its square membrane body provides coverage around the 3/4" opening while remaining compact enough for common shower plumbing penetrations and tiled wall assemblies.
The current technical data sheet lists ANSI A118.10, ANSI A118.12, the TCNA Handbook, the Uniform Plumbing Code, and the National Plumbing Code of Canada as normative references. The pipe seal is also IAPMO listed under product file numbers 9205 and 9990.
Yes. Testing rates the pipe seal for light commercial service under ASTM C627, making it suitable for residential and light commercial shower installations when incorporated into a compatible waterproofing assembly. Follow the project specifications and applicable local code requirements for the completed shower system.
