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Old 09-18-2020, 08:10 PM   #1
witchywoman's Avatar
Join Date: Jan 2020
Location: Stanardsville, Virginia
Posts: 160
Year: 2006
Coachwork: International
Engine: DT466
Rated Cap: 30
Underlayment?? Yes? No?

So this week I am planning to start the sub flooring. I have read 2 schools of thought. One says you need an underlayment followed by insulation and plywood. The other says skip the underlayment because it could cause moisture issues later on. So...did you use one?

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Old 09-18-2020, 09:30 PM   #2
Bus Nut
Join Date: Aug 2020
Location: Mesa, AZ
Posts: 705
Year: 1993
Coachwork: 44' Newell Coach
Engine: 8v92T Detroit
Rated Cap: 2 adults and two pigeons
I plan on just rolling out some form of epoxy coating on the metal floor and build from there. My fear is moisture trapped under a thin plastic sheet will never dry out. Then again, anything under the wood will never dry out. I guess I'll keep to the dry states and avoid the wet humid ones!
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