Those RV walls are so thin I don't know if one could drill a small hole in the wall and spray in expanding foam insulation or not...
When first going to ELKMONT Camp inside the Smoky Natl park we noticed a whole bunch of campers would put a 30' x 30' tarp over their whole trailer. This was mostly done for the occasional rain in the area and the tree coverage is so dense that it drip waters for days after a rain storm...
We did this on our OFF-ROAD POPUP and made two cutouts in the tarp to go around the roof mounted air conditioner and vents including the fantastic fan setup on the roof. We went straight off the roof in the back down to the ground and the front of the roof tarp came out over the awning setup and then went to ground. We used the 1/2-inch web ratchet strap for tie downs and went into the ground in four corners using the small screw into the ground anchors. Those leave no marks when you pack up and leave...
Worked out pretty neat for us and was quick to put up and take down using the ratchet web straps...
This would help also keeping the trailer shaded and maybe cool down better...
This is the only photo I can dig out of use using a tarp over our tent setup along the Blue Ridge parkway camping..
Roy's image
Search on-line for 'RV camping under tarps' - lots of different ideas here..
Roy Ken
