droid_ca wrote:Starting to get some more supplies for my trailer and need to know a few things
You're gonna get a gazillion answers for these questions, but here's mine: it depends on your chosen build method. Here's what I do ... obviously, others will advise differently ...

...
How thick are your walls?
About 1" ... I use either 1/2" or 5/8" plywood, cookie-cuttered, with either 1/4" or 1/8" paneling inside and 1/4" luan outside, 1/2" foam-board insulation fit into the voids of the plywood before exterior sheathing is applied.
Are they insulated?
Yes ... see above.
Floor thickness?
3/4" plywood. IMHO, built-up floors w/insulation are a waste of time, effort, & materials ... IF your mattress will be covering the entire floor, but I've had exposed floors in several of my TDs and never had a problem.
Good Luck, and as always ...
CHEERS!
Grant
Celebrating
Retirement after over
32 Years of Building, Promoting, Supporting, Supplying, Living the Lifestyle, and Loving
Teardrop Trailers!"Life Moves a Little Slower When You're On Teardrop Time"The nature of Life, itself, is change ...
"Those who matter, don't mind, and those who mind, don't matter." 