construction specs for 2005 cruiser

[Daelynn]

Did they build the 2005 Cruisers with Marine grade plywood in the floor and roof? what or the r values in floor, roof andwalls for 2005? We are thinking of buying a used 2005 Cruiser 28 rl and would like this information to make an informed decision.

[Dayle1]

Floors and roof are plywood, but I'm not sure about marine grade. However the main slide-out floor is not plywood, but a type of exterior glue OSB, it is a single piece floor and plywood over 8 ft in length gets extremely expensive. Never had a concern about flooring/roofing in my '04 Cruiser and don't expect any with the '11 Cruiser.

R values as stated by RV manufacturers are inaccurate, misleading and inconsistent. Wall thickness of most RVs are 1-1/2" or 2" and there is just so much insulation in that space. Floor joists on the Cruiser are 3" and again insulation is limited by that depth. Roof trusses are tapered, probably 2" at the edge and 5" in the middle, so insulation also varies, also the A/C duct occupies a significant area in the roof and also limits the amount of insulation above/below the duct. Reflectix 'bubble' insulation has an "equivalent R value" and is frequently used by manufacturers to boost R values even when it is not installed as required to achieve the claimed benefit. Also, fine print frequently states 'calculated R value', which is really the best case number for say the floor and not the average number. Finally there are so many holes and air leaks in any RV that minor differences in insulation between brands/models do not translate to real differences in performance.