I'm currently having a 5x10 trailer built for our tear. I'm wanting to build a Grumman 2 but resized up to 6' x 11'5'' roughly. I went with a 5x10 because I didn't want the trailer fenders/wheels super wide. I think the trailer extending over part of the fender and extending beyond the 5' width will be fine. I may or may not add bracing from the trailer to the outer edge of the trailer.
We are a family of three so we wanted the bigger size to accomodate a bunk at the galley end of the sleeping area (cross wise).
Our camper will have to sit outside all year, so I need it to be super watertight and able to withstand the elements for a long time. Aluminum is great but there is always the possibility of seam leakage, wood looks beautiful but there are seams there as well sometimes. So what I'm thinking is either wood or foam or hybrid construction covered with fiberglass and epoxy and then painted with automotive paint. Fiberglass tape seal the edges. Seems the most resistant to outside exposure. I've done some fiberglass work before.
I'm a bit intrigued at the foamie idea. Maybe 2"foam walls with 1/4" interior plywood skin, exterior foam fiberglassed (no wood skin)? There is a commercial walk in cooler factory here local that uses thick sheets of the blue foam. Either 2" or maybe even 3"
Maybe they'd sell me some. Then for the roof, two layers of 1" foam kerfed, and 1x2 cross braces and fiberglassed.
I like the flashing idea I recently read about using along the bottom of a foam build to resist road debris damage and so forth.
I plan on making the floor out of plywood only. 1/2'' probably. I don't want the trailer to weigh any more than it really needs to but I'm pulling it with a truck so it doesn't have to be super light either.
I want to use a commercial made door from the teardrop supply place. Here's my question on that - with using foam (or plywood) does the door ever not feel solid when opening or closing it?
Does all this sound ok or am I crazy?
