** Frank ** wrote:
I just replaced a damaged wall section with standard sheet rock. The
existing wall board was 1/2" thick, brown in color, fibrous and
very light weight with a cloth cover/reinforcement on the finish
side. Its weight and density is like the standard commercial 2'x4'
fluorescent fixture light grid tiles. The rest of the house is old
plaster and lath and this brown wall board was a latter addition.
Don't think its a very good product to begin with and never seen
anything like this brown wall board before. Can anyone provide more
information?

Fiberboard material like that was pretty common in the 30s and 40s. I
know it as "Celotex" which is actually the name of one company that
made it.

It came in panels sized as those now for sheet rock. It was used for
both walls and ceilings. Walls often used it in panels that had
vertical "V" grooves to simulate wood planks.

I can't say I much liked it but it wasn't all that bad either...had
both heat and sound insulating value and was world's lighter than
gypsum board (never saw that until late 50s or early 60s). It
probably burned well too, don't know.

--

dadiOH
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