View Single Post
Unread 04-03-2021, 02:51 PM   #140
cx
Moderator emeritus
 
cx's Avatar
 
Join Date: Jul 2001
Location: Boerne, Texas
Posts: 92,993
Not gonna be a CBU, Karen, or at least not one anyone else knew about before about 1968. I don't have an authoritative citation for you, but I believe that's when the first CBU was patented and which later became Wonderboard.

Lotta ways to "plaster" a wall before then, though. I got no real eye-dee what you might have.

My opinion; worth price charged.
__________________
CX

Y'ALL NEW VISITORS READ THIS HERE!
cx is online now   Reply With Quote