underbelly insulation

[dingo]

I have to replace the underbelly insulation. It got soaked. Should I replace it with bubble foil or rigid foam

[jimh]

mine has unfaced fiberglass bats under it.
mine is rather old (more than a year). don't know what they are using on the newer ones. if it is fiberglass, u may be able to air it out.
what trailer do u have?

[dingo]

Its a Stealth and it has Fiberglass insulation. Ive already ripped out the insulation it was saturated.

[jimh]

i would more than likely replace with what they had in it and in the amt that they used.
How did it get wet?
there isn't that much insulation under mine. they used something that looks like great stuff to seal the underbelly.

[dingo]

I had a leak in the front top corner. It drained all the way down into the underbelly. The fiberglass collects so much water I didn't want to see that mess again ido had gotten a leak

[kz08h5]

I would put rigid foam back in. You need to make sure it is closed cell foam. If not you can end up with the same problem. It needs to fit tight or it won't insulate well.

[Malco]

If you use rigid foam try to get it as tight as you can and use low expansion spray foam on the joints,it's waterproof and draft proof.

[trailraider]

i pulled our underbelly off and sprayfoamed the entire bottom. We didnt have any fiberglass bat in our underbelly , just a pesky squirrel.
I love having the spray foam.

[r8er4ever]

On mine I used some 4" think rolled fiberglass(cut and placed in between the frame rails-2 rails run front to back ) then used some 2" think foam sheets(also cut and placed in between frame rails-cut a lil oversize to ensure snug fit). Then used (double or even tripled for durable thickness and 4-5' width) a roll of high grade non-pouraus landscapers tarp(the stuff they lay down under gravel to keep weeds and things from growing) secured by 1/4think x 1 1/2"wide x 6'long and self-tapping(at least 1" long) screws w/1" fender washers screwed up into the frame rails(on the outside edges you have to drill small holes in the fiberglass, but if you do it low enough the screws are unnoticable). And when I use mine out hunting in winter, the floor(except pop-out, cant do it cause of the gear tracks) stays nice and comfortable. And have had it this way for going on 9 years with no sign of moist problems yet.