Spray Foam Or Mortar Under Shower Base. Then drop the tub on top. contractors typically use a material called bedding mortar to cover the area of subfloor where a shower base will sit.
How to Install a Styrofoam Shower Base Using Spray Foam YouTube - image credit : www.youtube.com
i used spray foam to stop a flexing, creaking fiberglass shower enclosure floor. the best type of mortar to use underneath a shower base is a mixture of portland cement and sand. first of all, the shower pan creaking is because they didn’t put a base under it.
How to Install a Styrofoam Shower Base Using Spray Foam YouTube
i am renovating my master bathroom. Some foam has less expansion force, but that would tend to stay. I followed the instructions on my acrylic shower pan. That was 15+ years ago and it’s holding up just fine.
