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Old 01-23-2015, 11:05 AM   #1
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2012 22' FB Sport
Sioux Falls , South Dakota
Join Date: Mar 2014
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Moisture under mattress

When we purchased our AS in 2014 we noticed some mildew stains on the plywood and the bottom of the mattress which we successfully treated with a weak bleach/water solution. Since we have been on our Winter swing thru MS,LA, & TX, we have noticed a lot moisture from condensation there & excessive amounts on the windows & interior walls. We have been able to retreat & dry out the mattress/plywood by propping it up & using a hairdryer, but it quickly returns. We are thinking about trying a full set of plastic levelers under the mattress to get some air flow. Any experience with this & suggestions?

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Old 01-23-2015, 12:57 PM   #2
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2012 Interstate Coach
Metairie , Louisiana
Join Date: Dec 2011
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This product seems to work well…
DryMesh Anti-moisture layer for RVs, boats and yachts

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Engineering: Finding complex solutions to simple problems you didn't even know you had.
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Old 01-23-2015, 01:11 PM   #3
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2012 27' Flying Cloud
Portland , Oregon
Join Date: Dec 2013
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Originally Posted by Protagonist View Post
Pretty good stuff, we use it on the boat. I've read that we humans exude (exhale, perspire) about a pint of moisture a day. Dehumidifiers help, but as long as the trailer is inhabited by humans in a cool climate, there's gonna be condensation.

These little dehumidifiers work pretty well:

$100 at Amazon.
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2010 Tundra Crewmax Platinum "Silver Rhino"
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Old 01-23-2015, 02:06 PM   #4
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2014 25' FB International
Little Rock , Arkansas
Join Date: Jul 2012
Posts: 562
A layer of reflectix insulation stapled to the plywood will solve the problem. I bought a roll at Home Depot and installed it in our 23fb and our current 25fb. Very easy solution.

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