Originally Posted by teddy
Care to expand on how you did the insulating? I have a Surveyor Sport 220. I would like to do this. Did you have to remove the undercover?
Also, does anyone know the fesibility of replacing the stock windows with double pane ones?
Yes.. you have to drop the underbelly. Add foam insulation around all pipes/wires... but don't foam seal up anywhere you're going to want to get back into for rapair/mods/etc. Any gaps leading up into your rig should be filled with solid materiel and foam sealed. Once you get that far you can stuff lengths of standard insulation up and around things as much as you see fit, but the bulk of the insulation can be formed into the underbelly itself before raising it back up.
Don't forget other weak points for heat loss. Outdoor shower compartment, vents, pass thru, etc. In my pass thru I just insulated the two doors and the sheet of ply separating the underbed storage area.
I don't see why you couldn't have double pane windows installed. I would check with FR first though to see if the window framing will take the new windows. But you know they have to have them if for no other reason then as a replacement part. The West coast factory is where I would call. I don't know if they would sell you the double panes, but they might. I would imagine they would sell for a premium since they weren't installed from the get go by the factory. If you're paying for a 3rd party professional to switch them out I would also hazard to guess that it's going to cost you your first born.
If I didn't have mine, I would probably consider it cost/hassle prohibitive.
There are some things you can do to your single panes that will help to a degree.. adding cellular shade (honeycomb style shade) and heavy curtains. Your creating air and layers to help block cold from seeping in. Insulated window film can help as well.
You COULD use foam board to close off your windows, but the above are less intrusive and don't distract from curb appeal.