Noticed a dark stain spreading across the ceiling after last night's rain, so I finally tackled that leaking roof. I climbed up with a putty knife and some roofing cement, carefully scraping away the old, brittle sealant around the chimney flashing. Found a gap where the rubber boot had pulled away from the brick. After cleaning the area, I applied a thick bead of the cement, pressing it into the crack with my fingers. Then I cut a patch from an old piece of rubber, coated it generously, and pr… fix a leaking roof 15