We had a leak in our attic and have water damage on our ceiling (plaster on lathe) and exterior wall (plaster on concrete block). Because of our stupidity, we know that the leak consisted of exactly 1/2 a gallon. The water damage happened a month ago, but I have been ignoring it.
My plan today was to scrape off any damp or damage plaster in preparation of fully drying the block wall and repairing the plaster. I don't have a moisture meter (yet), but was hoping that I would be able to find the dry edges. The damage seems to keep going with the paint and plaster coming off in fairly large sheets.
The central part of the wall is damp to the touch, while it is hard to tell about the edges. Is the right way to go about this to keep gently scraping anything that comes off? How do I know when to stop scraping?
