Newly Installed Acrylic Tub Creaking
My newly installed acrylic tub makes creaking noises stepping around and into and out of the tub. I did a Google search and found that this is caused when an acrylic tub is not set in mortar. This was confirmed when the contractor came over, cut the wall behind the shower/tub, and showed me the bottom of the tub. It was installed on four feet, and I believe the plumbers/contractor used adhesive glue to secure. There in no mortar securing the tub.
My question is how best to solve this problem. I’ve seen multiple videos with contactors using foam to stop the flexing/sound. Is this the best course forward? If so, what would be the best kind of foam to use? It looked like around ~3-4 inches from the subfloor to the bottom of the tub. I’ve read some articles that state to use ridge foam and then closed cell spray foam above the ridge foam. I’ve also seen videos that just used the spray foam.
My contractor will fix, but he hasn’t heard of the spray foam solution. This makes me a bit nervous (it seems like a somewhat common fix), so I’m looking for advice on the best way forward with advice on materials to use.
I’m tempted to have him take out the tub and set a new tub in mortar properly. I completely renovated the bathroom, and I’m worried the tub will fail in a few years.
Thanks in advance.
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