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Old 01-29-2015, 09:30 AM   #1
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Excessive Moisture on the inside of windows

I need some help with solving my moisture problem on the inside of my MH windows every morning. I am camping in the carolinas and running electric heat at night. The inside temps are in the upper 60s and the outside temps have been down to the upper 20s. My windows are dripping all day with moisture. I'm worried this is going to cause some damage. HELP!
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Old 01-29-2015, 09:41 AM   #2
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They sell plastic storm windows for problems like this. They are clear cellophane-like plastic and you apply them over the inside of your window frames, trapping air between them and the glass. Or you could try to do it yourself with cellpohane wrap from the grocery store. It is kind of a temporary, poor man's dual pane window solution, but it could work.
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Old 01-29-2015, 09:55 AM   #3
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Keep your Fantastic fan in the shower room on 24/7. You can also buy a small dehumidifier at many Ace or True Value hardware stores and keep that going as well. Air circulation is needed in these things or you will soon be smelling mold!
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Old 01-29-2015, 10:54 AM   #4
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Living in a modern motor home, especially with single pane windows, can create a lot of problems with moisture. Just breathing can cause these problems and when you add cooking, showering, dish washing, and food prep, the moisture problems can become serious. You definitely need to open vents and perhaps run exhaust fan or fans when cooking, showering, and washing up dishes or clothes. It'll take a bit of trial and error to figure when to open vents, how much to open them and for how long, but it's easily learned and well worth the effort. We always keep a vent cracked especially in very cold weather.
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Old 01-29-2015, 11:06 AM   #5
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We use our vents with fans every time we cook or shower. We also have a 25 pint dehumidifier that we run as needed. We have a humidity gauge and when it shows the humidity is above 50%, the dehumidifier is turned on until the percentage drops. We are in south Louisiana, where outside is normally pretty high. The dehumidifier is usually run about four or five days a week, for about an hour each of those days and maintains it fairly well. Humidity is usually at it's highest in the morning because the temperature differences between outside and inside are so different and you are adding so much moisture to the air breathing while you sleep. But running the dehumidifier first thing helps. We will not ever be without a dehumidifier in our RV!! It has been well worth the investment.
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Old 01-29-2015, 11:51 AM   #6
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We were in SoCal over the holidays for about 2 weeks, while the temps only stayed in the forties overnight, there were 6 of us ( 2 parents, 4 kids in the MH. With showers cooking and cleaning, when we left there was about 1/2 to 3/4" of standing water between the base of the windshield and the dash. We never saw it because the curtains were drawn and the front bunk was down. Fortunately no mold/mildew. The rest of our windows are double pane, and we open those curtains during the day, so we didn't have any moisture problems on them. Don't know what to do about the windshield though.
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Old 01-29-2015, 07:32 PM   #7
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Quote:
Originally Posted by Percival6 View Post
We were in SoCal over the holidays for about 2 weeks, while the temps only stayed in the forties overnight, there were 6 of us ( 2 parents, 4 kids in the MH. With showers cooking and cleaning, when we left there was about 1/2 to 3/4" of standing water between the base of the windshield and the dash. We never saw it because the curtains were drawn and the front bunk was down. Fortunately no mold/mildew. The rest of our windows are double pane, and we open those curtains during the day, so we didn't have any moisture problems on them. Don't know what to do about the windshield though.
This just happened to us on our first trip in our MH. 36 deg at night and we had the heat on. In the morning when I raised the privacy screen the windows were wet and there was a puddle where the dash meets the windshield. There's a plastic area down there that seems to be designed just for collecting water.

Next time out we'll keep the vent open and I'll lay some towels down there to soak up the water. Prolly get a dehumidifier.
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Old 01-30-2015, 09:39 AM   #8
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We have camped in damp areas and you need a dehumidifier . It's just as simply as that , with a dehumidifier you will have no problems.
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Old 01-30-2015, 11:55 AM   #9
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Open windows in the front and in the rear. Don't pull the blinds all the way down, leave then up a couple of inches for air movement. Crack the roof vent.

You have to have air movement to prevent moisture. Been doing this for years and never have a problem with moisture.

Don't be a curtain hermit and keep the coach all closed up
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Old 01-30-2015, 12:08 PM   #10
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The other obvious solution is just stop breathing! Just go outside the motorhome if you absolutely must breathe, wash, cook, shower, wash clothing, etc...! Jeesh!










Several moons ago my very first RV was a Fleetwood PopUp. And they have the exact same issue, only much less fun.


If you do not allow for proper ventilation, (as mentioned above), you will wake up to rain inside the PopUp! The condensation builds up on the interior tenting right over as you, as you sleep. The first big motion in the morning causes a nice rainstorm.
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Old 01-30-2015, 12:13 PM   #11
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We have a small 6" fan. We set it on the dash and let it blow on the windshield like a defroster. Keeps the moisture down. Leave it on 24/7! And of course we have ceiling vents and exhaust fan on whe cooking and bathing. We are currantly on SPI.in the RGV,TX. see sig
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Old 01-30-2015, 12:26 PM   #12
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Been full timing it for 5 years now. We've tried everything from mopping the window panes, moving the mattress (4" pvc between the mattress and the headboard works!), keeping a vent open (the reason I have found so far is, it's a closed room, the metal lid builds moisture that drips on you in the morning, ugh!), and then finally we broke down and bought the dehumidifier. Wow what a difference.

http://www.amazon.com/Sunpentown-SD-...n+dehumidifier

Bought our 2 years ago on creigs list for $75.00

We turn it on every night whenever the windows are closed (cold/elect heaters) or the weather station tells us the humidity is above 50%. Additionally, if you have a bunk, drop it at night, and open closed doors. And, don't forget to pour the bucket out from the dehumidifier every mourning.....
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Old 01-31-2015, 09:45 PM   #13
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I'm getting a dehumidifier. Just got a 70 pint model on Amazon. Will get to try it out next week (assuming its cold).

Amazon.com: Keystone Energy Star 70 Pt. Dehumidifier, KSTAD70B: Home & Kitchen
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