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gothcopter t1_j8tj0kj wrote on February 16, 2023 at 9:08 PM

Reading between the lines, it sounds like your wall is plasterboard (aka drywall) glued directly to a masonry wall. What is the underlying wall made of?

TheNorthernSaint OP t1_j8vzn06 wrote on February 17, 2023 at 10:03 AM

Breeze block, crumbles like sandstone.