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Old 10-04-2020, 08:15 AM   #1
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Apex bedroom window/windshield condensation

Camping with overnight lows in the 30’s. Getting condensation on all the windows, I have a few DampRid containers placed throughout and a small dehumidifier in our bedroom.

Problem is the large window on the front of the trailer gets major condensation. To the point of it pooling below the gap window. Is it designed to hold water down there?

Any suggestions on how to handle it? Is it as simple as needing a bigger dehumidifier?
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Old 10-04-2020, 08:22 AM   #2
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Have you thought about using some kind of an absorbent?

https://www.amazon.com/dp/B01M5EI8J0..._GWCEFbJ4JV35P
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Old 10-04-2020, 09:51 AM   #3
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Do you keep a ceiling vent cracked open? This works for us.
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Old 10-04-2020, 02:41 PM   #4
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Need air movement.
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Old 10-04-2020, 02:43 PM   #5
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We do not have the vent open, keep a reflective “pillow” in there to keep sun out in the morning.

That window Absorbant snake looks interesting
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Old 10-04-2020, 02:57 PM   #6
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Quote:
Originally Posted by IvoryHemi View Post
We do not have the vent open, keep a reflective “pillow” in there to keep sun out in the morning.

That window Absorbant snake looks interesting

It just needs to be open a crack for all that humid air you expel to be vented.
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Old 10-04-2020, 03:06 PM   #7
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The real problem is, you are only seeing the condensation that is obvious to you. If you don’t work out a way to keep your entire RV free of condensation, your little puddle at the bottom of the window is the least of your problems.

Bruce
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Old 10-05-2020, 12:35 PM   #8
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Common problem. You have two layers of air. Warm at the top, cool at the bottom. The result is condensation. To get around this you need something to move/mix the air around and a vent. Think about how you clear your vehicle windows of condensation.
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Old 10-05-2020, 06:24 PM   #9
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Quote:
Originally Posted by IvoryHemi View Post
Camping with overnight lows in the 30’s. Getting condensation on all the windows, I have a few DampRid containers placed throughout and a small dehumidifier in our bedroom.

Problem is the large window on the front of the trailer gets major condensation. To the point of it pooling below the gap window. Is it designed to hold water down there?

Any suggestions on how to handle it? Is it as simple as needing a bigger dehumidifier?

I had a similar problem. Here's a link to my thread.
https://www.forestriverforums.com/fo...aw-199498.html
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Old 10-06-2020, 06:47 AM   #10
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Wow. So going by your last post in that thread. Adding the insulation took care of the problem ?
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Old 10-08-2020, 06:36 PM   #11
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just crack open a window or a roof vent.
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Old 10-08-2020, 08:39 PM   #12
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Insulation and vapor barrier

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Originally Posted by IvoryHemi View Post
Wow. So going by your last post in that thread. Adding the insulation took care of the problem ?

I added the insulation and sealed the penetration to prevent the exchange of air into the front nose cavity. This fall with overnight lows in the upper thirties it's much warmer and much less draftier than prior. The sealing of the opening will eliminate any chance of moisture in the cavity. There was condensation on the window but that can't be prevented under those conditions with a single pane window.
Richard in Milwaukee
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Old 10-08-2020, 08:42 PM   #13
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it requires more than that when there is a design flaw

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just crack open a window or a roof vent.

It requires more than that when there is an inherent design flaw. You're not going to get the indoor dew point below outdoor ambient dew point using that method.
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Old 10-19-2020, 01:59 PM   #14
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How did you get both trim pieces off? The inside one was screwed in from the outside
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Old 10-19-2020, 06:07 PM   #15
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Rv's arent built like houses. They are built like automobiles. If you want to rip apart the entire interior of it and install a moisture barrier thats up to you, lots of work! You need air flow open the vent in the bathroom and the condensation will dissipate. There is no design flaw. It's warmer inside than outside, thats where the moisture comes from.

You will drive yourself crazy if you try to control the dew point inside the camper, if it's insulated like your house you could control it. The first question is how many people are inside the unit when the condensation occurs?

-Jason
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Old 10-19-2020, 06:11 PM   #16
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All of the work was done from inside. I see you have the garnish removed. With the garnish being removed I pulled sheets of insulation in by hand. I shoved my arm in as far back as I could do so pulling the insulation with me. I use plain old craft paper backed R11 roll purchased from Home Depot.
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Old 10-19-2020, 06:23 PM   #17
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I couldn’t get this one off because of the screws in the pictures I posted above.
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Old 10-19-2020, 06:25 PM   #18
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was able to get about 3.5 rolls of R15 inside using a paint stick to push it in.

Not sure how to seal this off through with a gasket, it’s a big gap. Maybe some foam weatherstripping ?
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