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Author:
toddguy99 (MI)
I'm doing a new acrylic shower base install over a new, 98% level OSB subfloor. Mortar seems to be the way to go under the shower pan. The instructions (Sterling Ensemble) say felt pad or 1-2" mortar. It did not come with a felt pad.
Soooooo, with 500 different types of mortar out there and me being a non-professional DIY-er, WHAT KIND OF MORTAR?????
Will this work: MAPEI Ultraflex White Powder Polymer-Modified Thinset Mortar ????
I see that a thick peanut-butter-like mixture and several pyramids so it squishes in appears to be an appropriate installation technique.
Thanks!
Edited 1 times.
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Author:
packy (MA)
thin-set is a little sticky but it will work.
as long as what you use has no rocks in it you will be fine.
i like to describe the mix as mayonaise thickness.
black roof/tar paper will work.
make the pyramids and squish the base down until perfectly level in both directions and leave it for a day.
if the floor is out of level a tiny bit and the front does not set all the way down, don't worry. shim it to give it support and the underlayment and tile/linoleum will cover the crack.
make sure to use a flexible caulking at that front edge.
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Author:
kumba (FL)
I've always seen it made with cement and sand. No clue what the ratio is but I'm sure someone here knows.
Avoid anything rapid or fast setting.
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Author:
toddguy99 (MI)
I used Mapei fast setting underlayment for floors and walls the first attempt. Dried before I could set the base. At least it came up in chunks pretty easily. I'm glad I had roof/tar paper under it. No damage to sub floor or drain. On to second attempt.
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Author:
steve (CA)
Just use a standard bagged mason mix.
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