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-   -   Has anyone ever used CustomFloat Bedding Mortar as mud bed for acrylic tub? (

jayp 06-05-2008 10:51 AM

Has anyone ever used CustomFloat Bedding Mortar as mud bed for acrylic tub?
I have a few bags of the stuff and I'm about to put in a new tub. Just thought I'd use it to stop the tub from creaking after installation. If you've never used that stuff, which mud mix would you use? I was trying to keep it lightweight and that Custom Building Prodcuts mud mix is really light. I got it at Home Depot.

mstplumber 06-06-2008 02:21 PM

I'm not familiar with that product but as long as it dries fairly quickly and gets pretty solid you should be fine. The problem with some of the extremely lightweight concrete products is that they aren't very strong and tend to crack under stress. Also, lots of folks will say to use drywall mud but I have had to pull tubs that had been set in drywall mud for several days and it was still wet.

Here's a tip. Once you put your mortar bed down, lay a piece of plastic sheeting on top of it before you set the tub. It won't interfere with the installation, but if you ever have to remove the tub you will be glad you did it.

Termite 06-06-2008 03:45 PM

Any good mortar product should work fine, as long as it can be poured that thick.

I can't believe that someone would use sheetrock mud to bed a tub! That would NEVER dry and it has very little compressive strength! :no:

mstplumber 06-06-2008 03:50 PM

Yeah, but it's easy. Seriously, I have been asked to do use sheetrock mud lots of times. I just use plain old Sackrete sand mix, the kind with no gravel.

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