Can a Roof Leak Cause Mold?

Water from a roof leak can reach attic sheathing, insulation, and wall cavities. Even a slow leak introduces enough moisture for mold to establish on wood and paper-faced materials.

Ice dams are a particularly common roof-leak source in foothills homes.

Water stains on ceilings or walls, damp attic insulation, dark staining on roof sheathing, and musty odors in upper floors can all indicate a roof-related moisture problem.

Addressing the roof leak is the first step; evaluating whether mold has established is the second. A professional can assess both the roof-side moisture and any resulting growth.