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Old 07-11-2019, 04:55 PM   #1
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Shower floor flex

Greetings. I'm about to purchase my first RV. I've been in a lot of them and I've decided on either the Rockwood 2109S or Flagstaff 21FBRS. I've never seen on in person but hope to soon. I noticed in a number of units the shower floor flexes when I stand it in. I'm not small (265 lbs) but it worries me. I have seen posts on other forums where owners have reinforced under the shower floor because the flex caused leaks, either in the drain or at the seam. Anyone have experiences to relate?

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Old 07-11-2019, 05:02 PM   #2
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The showers in those units will be a lite weight plastic. Depending on the design, there may be a screw in access under the shower that might allow you to insert some wood to act as a floor support. The drain area will be prone to leak with too much flexing leading to tub failure.Click image for larger version

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Old 07-11-2019, 05:50 PM   #3
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That access point under the shower, you can open and use dense foam like I did to support the shower pan. I didn't glue in place in case repairs have to be made. Also under mine is water lines and wiring.
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Old 07-11-2019, 06:22 PM   #4
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Ours has a rectangular access port. I added sections of 2X6 with shims. Added a little slow cure wood glue between sections so that one in they would stay. No flex at all.

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floor, show, shower

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