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Unread 02-25-2019, 08:30 PM   #1
richk91
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Leveling Substrate for Prefab Shower Tray (Pan)?

Hello,

First of all, I’m not sure if this question belongs on this forum, my apologies if it does not.

I have a prefabricated fiberglass shower tray (pan) with an acrylic coating. My floor is flat and level but manufacturer requires a mortar leveling substrate be laid. I’m a little concerned about potential shrinkage and sagging of substrate resulting in separation/voids between substrate and tray. Maybe this is not an issue if product is mixed according to instructions? Does anyone have a recommendation on a good leveling substrate to use? I read some use Plaster of Paris, but I will stay away from that stuff because it dries way to fast for my speed.

Thank you in advance for any suggestions!

rich
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Unread 02-25-2019, 09:12 PM   #2
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Masonry mortar mix is easy to work with and can be purchased at the large orange box.
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Unread 02-28-2019, 02:05 AM   #3
Tool Guy - Kg
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Hi, Rich.

Is the bottom of your tray relatively flat or is it a hollow ‘waffle-like’ pattern?

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Unread 03-13-2019, 10:15 PM   #4
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Update: I got rid of the prefab fiberglass shower pan and going back to using a solid pan like an Onyx. It cost a lot more, but will perform longer than I will be living.
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