Looking to start a build soon. I've been reading page after page on here about various builds and have already changed some plans after other folk's experiences with them.
Primarily 3-season. We do spend a lot of time at higher elevations and the better half is a freeze baby so therefor opted for framed walls vs plywood skeleton to allow for thicker foam insulation.
My biggest questions are whether or not the exterior walls will be sufficient, do the exterior walls and roof NEED to be treated since it will be skinned, and will this be sturdy enough should I want to add rails to the roof for kayaks.
IronTon 5x8 trailer
Floor:
Bolted to trailer frame.
1/2" treated plywood ply on bottom, coated with rubberized/asphalt sealant OR thought about using the stick on roofing tar paper and making sure its rolled over the edges and secured by the framing.
2x3, 24" on center framing with sandwiched 1.5" foam insulation.
1/2" plywood on top as the floor.
Walls:
1/4" treated ply outer wall. Trailer frame covering.
2x3 framing with sandwiched 1.5" foam insulation.
.90 FRP paneling interior wall.
Glued and fastened.
Alum skinned.
Roof/rear hatch:
1/8" ply (cant find treated in 1/8") top
2x3 framing with sandwiched 1.5" foam insulation
.90 FRP paneling for interior ceiling
Hurricane Hinge for hatch, gas struts.
Glued and fastened.
Alum skinned.
Rear:
3/8" ply and 2x3 construction
Simple cubbies with doors and flat surface for tabletop. Will be raised up enough to allow some extra foot/storage room from inside, but shouldn't be needed for us. This would also allow me room to add a closed off heater in the future. Insulated between the rear and cabin.