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Old 05-23-2017, 12:52 PM   #1
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tidefan83's Avatar
Appalachian Campers
Join Date: Nov 2016
Location: Tuscumbia, Alabama
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Floor under bath/shower

Recently on a trip I was taking a shower. I went to turn around and took a step and went through the tub. When I felt around, I found that there is no sub-floor in the far corner. When I got home I took a look underneath and verified that corner was missing sub-floor. I would like to replace it but I don't want to take the entire tub out (which it looks like that would be the only way). Any suggestions?

Michael, Katie, and Nora
2010 Toyota Tundra SR5 Crewmax
2001 Bobcat by Keystone
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Old 07-22-2017, 11:41 PM   #2
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The only way to do it is the correct way. Replace the entire unit and support the floor like they should have done at the factory. When they cut corners we pay the price.
My brothers Keystone had perimeter support and obviously the floor cracked. It didn't help that he weighs about 300 lbs but it would have no matter what the person weighed. My Arctic Fox has complete support under the shower and this will not happen.

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Old 07-30-2017, 06:40 PM   #3
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There is another way, if you have the skills. I had a similar problem with a used unit that had cracks that the dealer had put non-skid tape over. I put four layers of fiberglass and resin over the bottom of the tub and then painted it. Also shot expanding foam under the tub for extra support. It's as good as old.

I had all the material on hand and am from the yachting world so it wasn't a big deal. Easier than replacing the entire tub for me and I believe that the end result was better/stronger than a new tub.
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Old 07-30-2017, 11:09 PM   #4
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As an alternative to replacing the shower your way is a definite option. On high school I was fortunate to work for a fellow who built fiberglass boats. It's a good skill to have.
The only caution I would add is that you should use the minimally expanding foam. The high expansion foam could distort the bottom of the pan.
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floor, shower

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