westend wrote:
The foam in the larger "kits" is better than the foam out a can. You will also have to clean up the framing and cut foam to install paneling back on to the frame. The spray is not without work, both in preparation and in final result.
I think you are a bit low in the estimated amount of foam needed. One thing, your ceiling cavity is not 2" at the center. Most trailers have a crown with up to a 6" cavity in the center.
My ceiling does have a slight crown, it doesn't look like 6 inches, probably more like 4".
my thought was not necessarily to fill the cavity but to spray 2" on the whole ceiling.
The Touch N Foam kit from Lowes is an R5.4 per inch, so 2 inches would be just shy of R11, a huge leap forward from the 1" fiberglass batts with large voids.
You guys have given me alot of info to think over.
The Roxul batt insulation looks like a decent option also.
Rigid foam sheets would certainly be a much less expensive option than the spray foam.
Decisions...
