I did my sprinter headliner with the denim insulation. It's manufactured in the town I work in but they don't sell it directly. They told me to order it from Home Depot because they offered free shipping and it was drop shipped from the manufacturer. The only thing I didn't know is that the stuff you buy from Home Depot is single foil sided as opposed to the same product you buy from a hot rod shop that is double sided.
So what I did is spray adhesive two layers together - denim to denim - and then install in the ceiling with spray adhesive. It wasn't too hard to cut with shears. Then just to get everything level in the middle I did a sheet of foam insulation (not shown installed in this pic).
More progress soon to be posted here
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'Rett Butler screwed with this post 03-28-2012 at 12:25 PM