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Old 01-05-2018, 08:15 AM   #1
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Condensation in Flagstaff 25BHS

In cold weather (low 30's and 20's) there's moisture along the horizontal trim strips on the front of the trailer (tongue end) behind the Murphy bed. Has anyone else had a problem with this?

I researched and found good information about venting and air circulation but no one has mentioned the idea of caulking or insulating. I donít believe I have water leaks since I keep an eye on all caulking and the trailer is 1 1/2 years old, but do believe there is cold air getting in to cause the condensation. (I don't want to buy an dehumidifier since I hope to avoid conditions like this in the future.)

Would caulking along the trim strips help or cause problems?
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Old 01-05-2018, 08:40 AM   #2
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I suspect it is condensation from the air. you do not want to caulk on the inside as if it was coming from behind the wall it would be traped. I suspect when the bed is up it is reducing air flow in front.

Fans can help keep circulation, use exhaust fans when cooking or showering and leave them on at least 10 minutes after use.
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Old 01-10-2018, 12:22 PM   #3
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Originally Posted by llr View Post
I suspect it is condensation from the air. you do not want to caulk on the inside as if it was coming from behind the wall it would be traped. I suspect when the bed is up it is reducing air flow in front.

Fans can help keep circulation, use exhaust fans when cooking or showering and leave them on at least 10 minutes after use.
In my part of the country, regardless of how well you ventilate when using the trailer, moisture accumulates inside just from the normal humidity. Every time a door is opened, more "water" enters and when the outside temps cool inside parts of the trailer below the Dew Point, you will have condensation form. First on windows and next where the aluminum struts are located in the walls.

Either keep heat in the vehicle to keep inside air above Dew Point (currently 38 degrees with Humidity at 93% at my house. If I can keep the inside temp above 40 degrees the condensation will be minimized. Electric heat is expensive so I go for "Plan B" and use a dehumidifier. My little Frigidare unit kept my old trailer dry and mold free for 22 years. Still works fine and is a lot cheaper than trying to keep a trailer heated through the winter.
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