Schluter KERDI-SEAL 1/2" Pipe Seal

The Schluter KERDI-SEAL pipe seal closes the gap where a pipe passes through your KERDI waterproofing. Supply lines and shower valves are a common leak point, and this molded collar seals that penetration so water stays out of the wall. It is a small part that protects the whole assembly, used by pros and DIYers building tiled showers.

This pipe seal is sized for 1/2" pipe. Slip it over the pipe, then bond the KERDI-membrane flange to your surrounding waterproofing with thinset so it ties into the wall as one continuous seal. Use it at valve stems, supply stub-outs, and any pipe that breaks the membrane plane.

Skipping the pipe seal is how showers fail behind the tile — pros never leave it out. Tile Outlets stocks KERDI-SEAL in the common pipe sizes plus the rest of the KERDI system.