Melanie0303
New Member
Hello all. Hoping for some advice.
Hubby put up Wonderboard Lite cement board on three walls for alcove tub/shower. One of the three walls is an exterior wall and has poly over insulation. We now have to waterproof before having porcelain tiles installed.
Having done extensive reading, it appears we would have to slash through poly covering insulation if applying a surface membrane to cement board? (We're in Winnipeg, Manitoba).
We haven't taped/mortared the seams yet on the cement board.
Also, what is recommended membrane? I've heard about kerdi membrane, Latricrete Hydro Ban or Hydro Barrier, and Redguard. Doesn't look like the big box department stores carry the Latricrete line so not sure where to purchase either.
Thanks so much for any replies!
Melanie
Hubby put up Wonderboard Lite cement board on three walls for alcove tub/shower. One of the three walls is an exterior wall and has poly over insulation. We now have to waterproof before having porcelain tiles installed.
Having done extensive reading, it appears we would have to slash through poly covering insulation if applying a surface membrane to cement board? (We're in Winnipeg, Manitoba).
We haven't taped/mortared the seams yet on the cement board.
Also, what is recommended membrane? I've heard about kerdi membrane, Latricrete Hydro Ban or Hydro Barrier, and Redguard. Doesn't look like the big box department stores carry the Latricrete line so not sure where to purchase either.
Thanks so much for any replies!
Melanie