I found this "fiberboard" behind the paneling in a house (built in 1943) I'm
going to flip. It's 1/2" thick and looks like 4' X 8' sheets. It seems they
panted it and wallpapered it and it has some sort of tar paper between it
and the studs. They were using it instead of drywall/plaster. It reminds
me of boards they used to use when I was a kid to stick thumb tacks into as
a cheaper alternative to cork. It has the strength of acoustic ceiling
tiles. Is there a name for it?

http://pics.bbzzdd.com/users/Squisher/fiberboard.JPG




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