We camped this last week in cooler weather. We had an electric heater at night and we did a good job at keeping vented and we had no condensation issues. When we went to leave(after spending the week camping) the bunk ends and the mattress's were damp/wet. It was not soaking wet but pretty damp. Any solutions to fix/prevent this? We had no other condensation in the camper at all.

There is some stuff called Hy-Vent that boaters use to prevent that problem. It's a thick mesh that allows air circulation under the mattress. It's not cheap, but I don't know of a good alternative.The condensation is from your body's moisture that gets trapped against the cooler wall or solid platform underneath the mattress.

coolmom42 wrote:There is some stuff called Hy-Vent that boaters use to prevent that problem. It's a thick mesh that allows air circulation under the mattress. It's not cheap, but I don't know of a good alternative.The condensation is from your body's moisture that gets trapped against the cooler wall or solid platform underneath the mattress.Thank you!

Moisture condensing any where in a camper or at home is never good. Assuming you had good heat, you may have too much humidity. It is imperitive to vent moisture from cooking and showers to keep interior humidity below condensation levels in thin walled rvs. Hope that bed warms up for you! vent all cooking and washing moisture! Heat is secondary. High humidity WILL condense in your walls, rot , them ,ruin insulatation

Many hybrid owners use Reflectix under the mattress. Personally I tried that and foam insulation panels that have a foil side.I had better results with a wool blanket under the mattress because it allows better air movement.

That is a common problem with hybrids. Had the same problem with ours. I was going to try a closed cell foam board insulation from Lowes or HD under our mattress, but sold our hybrid before I got to try it.

Condensation under mattress | Good Sam Community

bikendan
Explorer
Jan 10, 2018
Pucka1378 wrote:
SDcampowneroperator wrote:
Moisture condensing any where in a camper or at home is never good. Assuming you had good heat, you may have too much humidity. It is imperitive to vent moisture from cooking and showers to keep interior humidity below condensation levels in thin walled rvs.
Hope that bed warms up for you! vent all cooking and washing moisture! Heat is secondary. High humidity WILL condense in your walls, rot , them ,ruin insulatation

Cooking we had all windows open in the trailer.

Shower we had at least the bathroom vent open and fan running and a couple of windows open.

We were at the beach and it was raining. At night with the heat on we had one window open, and both bunk ends vented and the vent open in the bathroom. No moisture in the trailer at all that we could see. We have had issues in the past with rain and the heater on. Proper venting this go around seemed the answer to our problems(no sweating from the canvas on the bunk ends etc).

are you using Popup Gizmos on top of the tent ends?
parker_rowe
Explorer
Jan 10, 2018
Happens with ours too in cold weather.
Airflow/airgap under the mattress would be the only way to get rid of it. We just wipe down the deck and the mattress when we pack up.

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