danemayer
Well-known member
I'm not sure just how thick the roof is, but if may well fall between 5-1/4" and 10".
But aside from that, based on my experience, the R values of the coach are not nearly as significant as the surface area of the windows. The windows have close to zero R value and on many floor plans they constitute a significant surface area compared to the insulated wall surface area. There's way, way, way more heat transfer at the windows than anywhere else.
It would be much more interesting to know how many kilowatt hours of electrical energy are required to maintain a temperature of 75 (F) when outside temps are 95 (F) and there's direct sun on the sides of the coach morning and evening. But I don't expect to ever see anything like that.
But aside from that, based on my experience, the R values of the coach are not nearly as significant as the surface area of the windows. The windows have close to zero R value and on many floor plans they constitute a significant surface area compared to the insulated wall surface area. There's way, way, way more heat transfer at the windows than anywhere else.
It would be much more interesting to know how many kilowatt hours of electrical energy are required to maintain a temperature of 75 (F) when outside temps are 95 (F) and there's direct sun on the sides of the coach morning and evening. But I don't expect to ever see anything like that.
