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Old 10-10-2013, 08:44 AM   #11
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I haven't heard back from Reace yet (as we all know he is a VERY busy man) but have some more thoughts. The slight sag to the top liner is most likely something that is somewhat inevitable with the insulation package. My understanding is that the reflectix extra insulation is glued to the fiberglass and then the regular liner is glued to the reflectix. From using it in a variety of situations, I can confirm that reflectix has very little structural strength in terms of pulling its layers apart. So I think what has happened is that the reflectix layer has separated where our liner has the sag. The way the liner is molded, I am hoping that the sag will not proceed any further. Anyone else with insulation package have that slight sag? It is only noticeable if you push up on the liner.

As Glenn and Rosemary mentioned, there is a slight gap in the liner/insulation inside each cabinet. For folks who camp in warmer temps any of those gaps are pretty much meaningless and probably not worth doing anything about. Since we camp most often when nighttime temps are in the mid 30s to 40s, those gaps are worth closing up in my opinion. No matter how well we vent the trailer to get out excess humidity, in low outside temps, moisture is going to condense when the warm interior air hits cold surfaces. (That is why homes in cold climates need a vapor barrier on the inside.) Were the gap is large enough, like in the rear, I am going to glue in reflectix, where it is less that 1/4" I am going to caulk or may try a vapor barrier tape.

Eric
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Old 10-10-2013, 09:22 AM   #12
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thoer.
I also have the sagging liner as you mentioned.
After looking at the liner gaps in the upper cabinets there appears to be no insulation under the liner. Don't know if that is normal on a 2009 17B or not.
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Old 10-12-2013, 05:39 PM   #13
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Eric, I checked again today. No sag on ours, and no insulation gaps as far as I can tell (though I can only stand to be in the thing for a few minutes at a time given the LP alarm -- argh!)
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Old 10-16-2013, 05:21 PM   #14
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Condensation

I've read about condensation in a number of threads and spoke to Reese a bit about it today. Correct me if I'm wrong but general consensus seems to be that it's a problem when it's cold -- really cold, not just cool. I don't remember being aware of this when we camped with our airstream, but we didn't do winter camping. Do all trailers have condensation issues in cold weather?
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Old 10-16-2013, 05:36 PM   #15
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If you breathe, the warm, moist air condenses on any surface that is cooler, and more so if the difference is great.
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Old 10-16-2013, 05:40 PM   #16
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So the warmer the inside of the trailer when it is cold out, the greater the condensation?
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Old 10-16-2013, 06:02 PM   #17
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Quote:
Originally Posted by Ruthe View Post
So the warmer the inside of the trailer when it is cold out, the greater the condensation?
Humans give off moisture as they breathe. The warmer the inside of your trailer, the more moisture that can be accommodated (stored) in the air. As the temperature drops, the moisture is released from the air as condensation, and will collect on windows, walls, etc. The condensation will initiate on those areas of your camper where heat loss is greatest, like windows and walls. (It is kind of like sitting in your cold car in the winter and having the windows fog up. It is only when the heater is on and the car warms up that the windows will not fog with you in it).
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Old 10-16-2013, 06:09 PM   #18
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No. The air you exhale is moist and warm. That's where the water is coming from.
But, if you crack a window, some of that moisture can escape. With the furnace going, there is an exchange of heat ( the warm air inside will be trying to heat the cold air until equilibrium is reached ) and moisture will exit the trailer.

I should have finished high school so I could explain more clearly and with confidence.

What Dave said.
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Old 10-16-2013, 06:10 PM   #19
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So this would be the case with any trailer -- not just fiberglass -- It seems like a smaller trailer might have more issues with condensation -- we almost never used our furnace when we were in the higher elevations -- we just wore more clothes --
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Old 10-16-2013, 06:12 PM   #20
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Condensation is one of the primary reasons to have "insulated" or double paned windows. The window inside the trailer remains warmer so decreases the chance of condensation.
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