Hi, I had the same problem in that situation. I have the exterior shades that snap in place, although mine use the velcro fastners. I went the Home depot and bought a couple of rolls of the foil and foam insulation - it is only about 1/8 inch thick with foil on both sides and foam in the middle. I tried just cutting it and placing on the inside but could not get it to stay in place for any length of time. Sooo I took my exterior shades and some new rolls of foam to a local business that makes boat canvasas and had him sew the insulation to the back side of the exterior shades. It made an unbelievable difference. I can even turn my front ac off at times. Most anyone with a big sewing machine could do it. Nothing fancy, just stitched all the way around one time. Hope this helps. It sure worked for me.
I am looking at a 40' 2001 Monaco Diplomat 330 Cummins with Ralph Lauren up grade? Can anyone give me some feedback, positive or neg. Things to look for and or possible issues with this coach. Pictures show it seems to have been fairly well taken care of but pictures or just pictures. Thanks in advance for all feedback.