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Old 07-15-2021, 07:43 PM   #1
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Brand: Thor Motor Coach
State: Washington
Posts: 5
THOR #16848
Spongy floor

Floor is becoming spongy after the step up at rear of coach. What is under the floor in that area. Thor Chateau 31Y.

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Old 07-16-2021, 04:18 AM   #2
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Brand: Thor Motor Coach
Model: Chateau 24F
State: Ohio
Posts: 1,131
THOR #16721
Likely plywood. I have a Chateau 24F with a step up to the bed area in the rear. Does it smell musty? Maybe a water leak from the shower? Also make sure your outside storage compartments are tightly closed and locked.

By "spongy" do you mean soft? If you press on it with your hand does it give? Note there is a thread/discussion on here regarding the vinyl floor covering being wavy and having bubbles. If that's what yours is like, it's by design. Thor does not glue the vinyl supposedly to allow for expansion/contraction to prevent cracking.
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Old 07-16-2021, 04:34 AM   #3
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Brand: Thor Motor Coach
State: Washington
Posts: 5
THOR #16848
Floor

It's not the linoleum, is it plywood underneath it? No leak it seems and nothing coming out underneath the coach. No musky smell either. It's when you step on it in a few areas, seems like trusses in spots and the other spots flex down under weight. Guess might have to tear up linoleum and replace the plywood.
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Old 07-16-2021, 05:00 AM   #4
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Brand: Thor Motor Coach
Model: Chateau 24F
State: Ohio
Posts: 1,131
THOR #16721
How old is your rig? Are you the original owner?
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Old 07-16-2021, 05:12 AM   #5
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Brand: Thor Motor Coach
State: Washington
Posts: 5
THOR #16848
2018 bought it new, sat for 1st 9 months, used a few times, then retired and have been living in it for 2 years now.
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