Condensation under mattress

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.

On our old 17' hybrid we found leaving a flap open on the canvas bunk end prevented condensation.

On our current hybrid that didn't work. There is a small crank out window above our sink. We leave that open and never have condensation. And we've camped on some pretty cold and damp nights.

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).

Condensation happens, it's not the end of the world. Now that you know moisture gathers in that area, make it part of your routine to check it regularly. Make an effort to increase airflow in that area.

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.

Another alternative might be the use of the bulk filter media sold by Big Box stores - cost about $20 for a 20 foot roll - it's fibrous and should allow air to flow under the mattress.

I doubt Refectix would do much because its insulative properties are only effective at temps above something like 75 degrees (per literature on the product itself).
Below that it's about the same as a sheet of plastic.