Flashing Around Chimney Steel Roof

Base flashing has several components.

Flashing around chimney steel roof. Rivet the pan flashing to the sidewall flashing. A continuous sheet metal apron across the chimney s downslope face l shaped step flashing running up both sides and when the chimney sits below the roof ridge a cricket or saddle running across the upslope face. Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer. Chimney pipes on metal roofs must be flashed in order to create a watertight seal around the pipe and prevent leaks through the roof.

The flashing can be installed quickly and easily with kits that use rubber pipe boots. Cut and fold pan flashing to fold up the back of the chimney and over the sidewall trim. Apply sealant to sidewall flashing where pan flashing tabs will overlap. Install two layers of butyl tape sealant under perimeter of pan flashing.

Pan flashing should extend at least 12 inches up the roof plane.