Interior material question


Back in the 70's, I used to buy fiberglass stand up tops and install them on vans. I then did the interiors, including heaters, fridge, sink, stove, etc.

There was a material I used to buy but can't find anymore. It was a roughly 1/2" thick closed cell foam that had a nice white pebbled rubberized surface that I could glue directly to the ceilings. It gave sound and temp insulation and could be formed around corners.

Does anybody still make this stuff?


New member
Sounds like FRP wall board glued onto insulating foam sheathing. You could make it yourself easily and inexpensively with some contact cement and a laminate roller. There are many types of foam sheathing available, some more flexible than others and up to 2 inches thick. Everything is at Lowes or home depot. FRP can be used on its own if you can insulated the inside of the exterior wall.

FRP: (other colors available)



Flexible: (link is for 2" but I almost positive I have seen it in smaller thicknesses)


The foam boards suggested are going to be fairly stiff and may not bend as easily as the FRP. The Formular brand pictured is made by Owens Corning. Pink is their marketing color. That is extruded polystyrene. The Dow Chemical brand is Styrofoam and they use blue as their marketing color.

Dow Chemical makes what is called fan fold. It is much more flexible. You will usually find it in a 4 foot by 50 foot size. It actually folds in 4 foot sections. You could probably glue it to the FRP. It is 1/4" thick. I believe it is R-4 per inch. I found that the Lowes store in Silverthorne, Summit County, carried it but I have not seen it in any other Lowes in the metro Denver area.

Eagle Rock Supply is located near 72nd and York. That is either north Denver or Commerce City. They are a commercial insulation distributor and carry most of the Dow products. I have bought a few items from them. Plus they might know about the products you said you used a few years ago.

Recommended books for Overlanding

The Alchemist, 25th Anniversary: A Fable About Following ...
by Paulo Coelho
From $10.47
Morocco Overland: A Route & Planning Guide - Southern Mor...
by Chris Scott
From $18.23
Tschiffely's Ride: Ten Thousand Miles in the Saddle from ...
by Aimé Tschiffely
From $10.99
Bushcraft 101: A Field Guide to the Art of Wilderness Sur...
by Dave Canterbury
From $9.99


Was the skin a separate layer bonded to the foam? What color was the foam? You're sure it was closed cell, yes? Was it elastic (spongy) foam, or did it crush if you compressed it?


I am pretty sure it was a closed cell foam. The surface was the same material but maybe with a painted surface. There was no board. It was stretchy. It was spongy. You could compress it but it came back afterwards. All you had to do was glue it to the fiberglas ceiling, with cuts in the corners where you removed excess material. You could simply butt sections together and you pretty much could not see the seams.


After trying to think of how to describe it, I would say it was like wet suit neoprene, only thicker and more spongy.