Thank you all for the input and suggestions.
HOLY COW @rruff That is a spreadsheet that everyone can/should appreciate. It should be pinned to all DIY threads! I love breakdowns and getting lost in the details like that. Very helpful and much appreciated. Do you recall if the weight of the finished panels were per sqft of both sides or just one finished side? i.e. 4x8=32sqft but is that one face or both sides so the weight would then have to be doubled?
I may have misspoke....no, mistyped(?) or whatever. I don't intend to use 100% foam and nothing else...I know there are severe limitations in that regard. However, I do want to keep it light and I realize there will be some amount of wood and/or aluminum. I am not against the PMF method, but I don't know if it would "replace" a fiberglass epoxy job. I do plan on having either luan / pretty ply or a product called "signabond" (which is thin aluminum skins on a composite core for a 3mm thick panel) on the inside of the camper for aesthetics, but it will also add strength. I am leaning heavy to the signabond side. It is available in colors and is about $60 for a 4x8 sheet locally.
In doing more research the past few days, I have convinced myself that the truck bed liner won't really add any strength properties, but I plan on using it on the outside in lieu of paint/gelcoat...with weight being considered.
Foam only?! Foam is a core material... good insulation and good for structural panels. I don't think bedliner over foam is going to help much. Fiberglass over the foam is definitely viable, though.
I'm building a camper now with PVC foam core and wet-laid fiberglass and carbon skins. I built a couple in the past with cheap XPS and wood slats in the core, and 2.7mm Luan ply skins; the later one encapsulated with a layer of fiberglass. I kinda favor that method. It's simpler DIY, not as messy, quite light, the embedded wood gives you lots of hard points, and it's cheap.
I put this together awhile back to estimate panel weights and cost. Ask questions!
HOLY COW @rruff That is a spreadsheet that everyone can/should appreciate. It should be pinned to all DIY threads! I love breakdowns and getting lost in the details like that. Very helpful and much appreciated. Do you recall if the weight of the finished panels were per sqft of both sides or just one finished side? i.e. 4x8=32sqft but is that one face or both sides so the weight would then have to be doubled?
I may have misspoke....no, mistyped(?) or whatever. I don't intend to use 100% foam and nothing else...I know there are severe limitations in that regard. However, I do want to keep it light and I realize there will be some amount of wood and/or aluminum. I am not against the PMF method, but I don't know if it would "replace" a fiberglass epoxy job. I do plan on having either luan / pretty ply or a product called "signabond" (which is thin aluminum skins on a composite core for a 3mm thick panel) on the inside of the camper for aesthetics, but it will also add strength. I am leaning heavy to the signabond side. It is available in colors and is about $60 for a 4x8 sheet locally.
In doing more research the past few days, I have convinced myself that the truck bed liner won't really add any strength properties, but I plan on using it on the outside in lieu of paint/gelcoat...with weight being considered.