A wall of whitish tiles embossed with "Certain-Teed" was found in the basement of a c. 1926 house. The homeowner wants to know what they are and so do we.
Personally my guess is it is gypsum tile, which CertainTeed manufactured beginning in the late 20s.
I have photos but the file is too large to attach here. Does this ring any bells out there? Thanks.
PS: If anyone wants to see the photos of this mystery wall, please email me at [email protected]. I'll be happy to send them. Thanks.