Very high humidity inside skirting

[JohnWedell]

We decided to spend the winter in New York rather than go to Florida as we usually do for the winter. We made all the necessary preparations to stay in the trailer and everything so far has worked out great. One thing we did was skirt the RV with 1 inch foam board and it seems to work good, however I have a remote sensor inside the skirting and noticed the humidity is always at a very high level, 80%, 90% this morning it was 99%. Just wondering if anybody else has done it and noticed that. And wondering what to expect when I remove the skirting.Will the frame be all rusted, brakes be rusted out, just wondering.

[CAG]

My guess is that the underside of the RV is warmer than the outside, much like the living area of your RV, and to boot moisture is unable to escape. I have no experience in skirting so hopefully someone will jump in the a solution. I would think that there will need to be some air flow under the RV to equalize humidity but that is a WAG on my part.

[FPM III]

Do you have any ventilation? Homes built on crawl spaces usually have vents to allow ventilation. I would think the same thing might be needed if you enclosed your RV with skirting. While RVs don’t appear to have any ventilation vents between their ceiling and roof, homes do.

[Grumpy]

Originally Posted by FPM III

Do you have any ventilation? Homes built on crawl spaces usually have vents to allow ventilation. I would think the same thing might be needed if you enclosed your RV with skirting. While RVs don’t appear to have any ventilation vents between their ceiling and roof, homes do.

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