1" pink XPS lined with carpet, plywood and spray-foam insulation.
Stained plywood over foam board with reflective layer. Plus spray foam insulation.
The floors have 3/4" hard foam insulation and a 1/2" plywood sub-floor. The sub-floor was screwed into the chassis with 1.5" stainless steel lag screws, which were counter sunk into the wood. Then a layer of wood filler and one foot square vinyl tiles.
Polyisocyanurate Laminated Sheets, then plywood
Rattle trap, timber strips, foam board, plywood, click vinyl flooring.
DIY ply boxes and cabinets. Custom porthole storage too and ceiling-mounted storage nets.
Nets make for cheap and flexible storage.
Cabinets and bench seats made from lightweight aluminum tube and plywood. Stores all my stuff. The whole setup also converts to a sleeping platform when required
Check out the build blog - great, versatile setup.