This weekend I should be able to start laminating the floor system. I'll do photos as I go. Can't start tomorrow (Saturday) as we have to go over to Tomoka SP and see the Tearjerker ralley, so I can get some more ideas.
I live in Florida, so even though it is February, most of our days this time of year will be in the 50s-70s.
I'm doing a hybrid build, kind of a modified Benroy, but with a more curvy profile. I decided on the rear galley, but it will slide out. Interior will be the sort-of queen size bed, but there will be a convertible "settee" on the front bulkhead facing back. The 4' height will allow us to sit, since I'll use an angled settee and the drop floor. At night the settee will either flip over the drop floor or go back up into the forward bulkhead and a secondary section will come out of the bed to make it full length. This will give my dear old dog the room he told me he must have. :-) The floor plan (as of today, no guarantee until after I see the Tearjerker ralley tomorrow) is that it will be 5'4" wide and 9'6" long. The bed and settee will be about 9" above the floor, giving me under bed storage.
I'm going to do a laminate encapsulated floor build 1/2" ply - 1" blue board - 1/2" ply. Internal on the laminate structure will be 1x2 (true size) spruce treated with my old standby mix of diluted poly. Spruce will be perimeter, also frame top and cross braced at 2' intervals longitudinal and at 16" across. For rear overhang there will also be slotted 45 degree boards running from interior steel frame cross member, across steel frame corner to outer wood frame. All components will be glued and screwed and allowed to cure for several days. I'm also framing in for an 8" deep, drop floor between the 2nd steel cross member (from front) and primary cross member at mid-trailer. All wood components will be weather sealed with the diluted poly mix I've used for decades in boats (spar poly/ mineral spirits 25:75 , 50:50, 75:25 ). I'll then coat the bottom part of the panel with elastometric cool seal prior to bolt down, as I've found that stuff works very well and should fully dry in about a week.
The floor will be through bolted into the frame. Hopefully, by midweek I'll have a floor on the camper build.
I'm figuring (for now) my walls will be 5mm ply over 1.5" foam over 5mm ply with internal structural members. Front and top will be similar. I'm leaning to doing a woodie look on all exterior facing areas, but using white EPDM 45mil for the top. I have a bunch of it left over from another build I did and I love that stuff.
Regina said we should keep track of all expenses (that is scary), so for now here is how it goes...
HF Trailer = $308
All floor components =$230
Luckily I already have all the wood I need to fully build all of my cabinetry, LED lighting, solar system, water system, propane, refrigeration, electrical wire/switches/boxes. I can match a hardware store in bolts/screws/etc (from 1/4" long #8 to 12" long 1/2" SS) so that will help out a bunch. This will be interesting to see the final cost, but also it means I will lay waste to my "supplies" I've acquired over the years. Hmmm, it might just be time to break out my two old Fils and Sons bronze sconces I got 30 years ago from a boat rebuild I did. Those things would look cool in this!
This is so much FUN!!!