See attached. Was hidden behind some coving, I initially thought it was yellow paint on the old wall, painted over with Matt and it came back the next day. I scraped some plaster off to the cement board and it looks dry.
Unfortunately I can't get to the roof to view where the chimney meets as it's blocked by the dormer. Might get the ladder out when the wind calms down.
For now, trying some zinniser stain block while I wait for the wind to die down, but would appreciate any advice people can give!
Unfortunately I can't get to the roof to view where the chimney meets as it's blocked by the dormer. Might get the ladder out when the wind calms down.
For now, trying some zinniser stain block while I wait for the wind to die down, but would appreciate any advice people can give!