Engine Cover Insulation

Our first camper was a 1976 Dodge class c with the same engine cover. (We always called it a dog house because that's what many of the truckers I knew called it.)

But it had what appeared to be a factory made blanket made out of foil faced and backed insulation. Basically two layers of heavy foil sewn together in a cross diamond pattern with about an inch of fiberglass insulation between. It was either from the coach builder or perhaps an after market item but definitely not home made. It was cut perfectly to fit, hemmed and attached with snaps so it could be removed. I would just go on line and look, maybe a custom van site or even J.C.Whitney. After I wrote this I came back five minutes later. I don't know how to link sites, but I did a brief web search and found dozen sites that sell engine insulation, so lot's of possibilities out there.

Same problem with our 77 Sportsman.  The original insulation inside the dog house cover is in nice condition and we didn't have much space to add any on the engine side - plus I am a worry wart and packing in more insul. next to the engine made me a bit nervous about air circulation.  I made a pattern/template from the carpet on the interior side.  Then I sewed an additional cover to put over the carpet.   I used some of the upholstery fabric from decorating the rig and Insul-bright batting.  Insul-bright is used by quilters/sewing folk for the making of pot holders, oven mitts, etc.  I happened to have some on hand and it worked out fine.  This blocks a good bit of the heat and you have no fireproofing issues. You can also use Therm-Flec heat proof fabric which is already quilted and comes in a few neutral colors.  If you know basic sewing or know someone who can sew it is a pretty good solution.  

Here is a photo.  I still need to add some trim around the bottom but it looks pretty good! You can see that we went "Full 70's" with our decorating scheme.