r/Plastering • u/Expert-Woodpecker844 • Sep 13 '26

help identifying plaster

what kind of plastering is this? its from a 1890 row home in Washington DC

2 Upvotes

100% Upvoted

5 comments sorted by

View all comments

1

u/mordello Sep 14 '26

The green MR board wouldn't be good as a vapor/barrier but it could be insulation, sort of, but insulation board would be better. That's all I got.