Schluter Shower Part 1: Drywall and Wide Roll Kerdi Membrane

This video shows a Schluter shower installation using drywall (purple board) and Schluter's Wide Roll Kerdi membrane, which allows the walls to be waterproofed without seams! We tore out an old one-piece fiberglass shower and built a curbed Schluter Shower. And in Part 2 we'll share how to install the Schluter shower pan, here's the link to Part 2    • Schluter Shower Part 2:  Schluter Sho...  

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The first step is to check shower stud walls. All studs should be even with each other and plumb. If they're not, use the sistering method or shave down studs using a planer. Studs should also be 16" on-center, that's standard for all backer boards.

Step two is the installation of 1/2" drywall. Schluter recommends using drywall in this scenario because it's easier for Kerdi membrane to lay flat over drywall. That said, there's no need to finish the drywall with joint compound. In fact, don't use joint compound for drywall in the shower as it can be a bond breaker for Schluter's Kerdi Membrane.

All screws should be flush or sub-flush with the drywall surface. That way screw heads won't penetrate the Kerdi membrane.

Schluter's ALL-SET mortar was mixed to the lighter consistency and troweled onto the drywall using directional troweling. This allows air to escape between the Kerdi and drywall. Kerdi was then made smooth with a 6" drywall knife. Schluter's wide roll of Kerdi membrane allowed this entire shower to be waterproofed without any seams, minus the one between the Kerdi-Band and existing drywall.

Watch the video for more details.

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