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poguelife's avatar
poguelife
Explorer
May 21, 2015

Condensation under mattresses

This past weekend we took our brand new hybrid out for the first time. We had a bit of rain, so I was super vigilant, looking for any leaks. The tenting and seals all made out great, but I was a bit startled, because in being thorough looking for leaks, I removed the mattresses and felt wettness on the bottom of the mattress, as well as the bunk-board. This was the same on all 3 of our tip-outs. The following night, one of the kids was scared and slept with us, so no one slept in that tipout; consequently, no dampness under that mattress but condensation under the mattresses where people slept. I was spooked at first, fearing leaking, but it became quite evident that this was just condensation. The overnight low was in the low 40's so I suspect the body warm through the mattress meeting the cold air underneath the bunks =condensation.
... is this a common thing? Anyone else want to pitch in with their experience on this? The user manual talks about condensation as one might typically find it, on the tenting, but I was surprised to find it under the mattress.

11 Replies

  • poguelife wrote:
    The overnight low was in the low 40's so I suspect the body warm through the mattress meeting the cold air underneath the bunks =condensation.
    ... is this a common thing?


    I've been reading the forums for ~ 15 yrs now, BBMs before that, and I'd say yes, for many hybrid owners condensation forming on the underside of the mattresses is not uncommon. That said, we owned a TrailCruiser C21RBH that had but one hybrid bed at the front of the trailer, therefore only one hybrid platform w/tenting, and never had this problem at all, not even once. I did however always make sure the trailer was properly ventilated by keeping a few window flaps open, with a fan to keep the air moving inside the camper. I can imagine though that with 3 hybrid tip outs this could be a problem you may just have to live with.