Punctures/Slices, Roof Drain Installation/Repairs, Penetration Flashing in Cottman Bustleton

Repaired punctures in TPO membrane above bathroom leak in PepBoys. , Sealed connection inside drain. Drain is old and seal appears to be shrinking. Sealed with m-1 sealant. , Sealed all penetrations in area of leak. Vent pipes and duct work.