Has anyone experienced water condensation on the interior wall of the bed slide? I've got a 3921GK with a small slide out within a larger nightstand slide out and I'm seeing this condensation in that small bed slide. The condensation forms where my mattress butts up against the side wall of slide (not the headboard). I'm assuming this is occurring because of the temperature difference outside and the warmth of the bed and lack of airflow between the mattress/linens and the wall since the mattress fits pretty snuggly in the slide. This slide is oriented to the north so the exterior is very cold. I'm in Colorado so we have a dry climate. The base of the bed is carpeted in this location and the carpet is dry but beads of water form on the wall. I'm hoping this doesn't present a long term problem.

Has anyone experienced water condensation on the interior wall of the bed slide? I've got a 3921GK with a small slide out within a larger nightstand slide out and I'm seeing this condensation in that small bed slide. The condensation forms where my mattress butts up against the side wall of slide (not the headboard). I'm assuming this is occurring because of the temperature difference outside and the warmth of the bed and lack of airflow between the mattress/linens and the wall since the mattress fits pretty snuggly in the slide. This slide is oriented to the north so the exterior is very cold. I'm in Colorado so we have a dry climate. The base of the bed is carpeted in this location and the carpet is dry but beads of water form on the wall. I'm hoping this doesn't present a long term problem.

Hi PR,

Reading your thread has bought up some questions for me. I am thinking that you need to do a test or two. The test that I am thinking about is to measure the temperature in different areas in the bedroom. I don't know what equipment that you might have to measure the temp. If you have a portable weather station that has a pig tail for outside temperature could help or even a digital thermometer at is used for cooking. At the end of the probe or tip use a heat sink.The heat sink can be any material. The size could be 1"x1"x1/4" thick. Using metal will get a quicker response. You can even use tape to hold the tip to the heat sink to make it easier. Place your heat sink in different areas of the bedroom. Keep it in the areas for an hour or too the get a good average temp. My thoughts are you want to know what the temperatures are in different parts of the bedroom.

I am thinking that the area where the condensation is, it is colder that the others areas in the bedroom. I hope I am making sense. If it is colder, then there must not be enough insulation. If this problem continues long term there could be a problem of mold.

I hope this helps,
Al

This condensation problem is in most all rvs mostly due to lack of insulation, lack of air flow, furnace heat & humidity. If you put something at the head of bed to allow about a 1/2" of space the moisture will/should stop, same as anything else that's up against an exterior wall. Also you can slightly open a roof vent with a window slightly opened at the opposite end & run the ceiling fan or a portable fan on low speed to move some air. Possibly if you're in a very humid area run a dehumidifier.

Thank you guys for the replies. Thankfully I’m in a very dry climate not conducive to mold growth. I’ll try pulling the mattress down a bit and see if that helps but I’m not really seeing the problem on the headboard outside wall but on the side wall. The mattress is a tight fit side to side so I don’t think I can get much of a gap to allow air flow. I’ll definitely see if I can detect a temperature difference anomaly in that location. Again I really appreciate the responses and suggestions.

I have continued to experience moisture due to condensation under my mattress. I did discover this product though and ordered it. Not cheap at $120 for enough to fit under my king mattress but from what I've read its the solution that will prevent the moisture and subsequent mildew and mold. The product is called HyperVent. https://www.mattressinsider.com/mattress-condensation-prevention.html