Replies

1. 
   gordzco | Apr 17, 2005 08:50am | #1

   I remember setting acrylic tubs years ago in mortar for support.

   Most of the fiber tubs I've seen lately have a strucural base, I still set them in foam. Partly to keep them from rattling and I also think the insulation helps keep the water warm and deadens the sound of an upstairs bath.

   The foam can expand and raise the tub after instalation if you use too much foam. I counteract that by filling the tub with water immediately after installation.

2. 
   DanT | Apr 17, 2005 10:45am | #2

   We bed shower and tubs in mortar except cast iron units.  DanT

1. 
   HeavyDuty | Apr 17, 2005 09:13pm | #4

   Do you do that with a steel enamel tub as well? What kind of mortar mix?

3. 
   Shoeman | Apr 17, 2005 06:01pm | #3

   Yes,

   I still think it is a good idea to bed fiberglass or acrylic bases in morter mix.

4. 
   cliffy | Apr 17, 2005 09:21pm | #5

   Even with the wood structure underneath, I still blast two big cans of foam underneath.

   Have a good day

   Cliffy

5. 
   RW | Apr 17, 2005 09:24pm | #6

   Same dif as mortar, I've always used durabond. Easy, cures hard, water doesn't hurt it. I heard a plumber once talk about plaster of paris and durabond is something I generally have around. Thats how I got going there.

    

   "If you pick up a starving dog and make him prosperous, he will not bite you. This is the principal difference between a dog and a man." - Mark Twain

6. 
   Frankie | Apr 17, 2005 10:23pm | #7

   I use Structo-lite which is a perlited plaster. It comes in 50# bags at about $16@. It's nice and fluffy

   F

1. 
   davidmeiland | Apr 17, 2005 11:09pm | #8

   Another vote for Structo-Lite. It smooshes down as you set the tub but has enough body to keep the space filled. It does not expand.

7. 
   DDay | Apr 17, 2005 11:15pm | #9

   Foam won't hold the weight.

   All the plumbers I've seen use either mortar or plaster.