zek wrote:
On May 28, 8:18 pm, "RogerT" wrote:

Wow, that's an interesting picture. I've never seen anything like
that, but I also never heard of rock lath plaster before.

In the picture, is the brownish top of the picture the inside of the
wall, or is it the wall surface that shows when standing in the room?


The brown paper is the inside. In my old house, was newer, the
ceilings had two sheets of drywall with a plaster skin coat, very
smooth. The living areas had a texture. I would assume all the walls
had two sheets.

Thanks again. I guess that means it is what RBM suggested -- at least for
the walls --- rock lath plaster.

Looks like for the walls they nailed the drywall to the studs, then did a
"brown coat" (rough coat) of plaster, then a thin white finish coat of
plaster. And I guess for the ceilings it was easier and lighter to just do
two layers of drywall and then a finish coat of white plaster.

At least now if I ever run into the same thing you have I'll know what it
is.