Flashing Brick Chimney Flat Roof

Chimney flashing can allow roof leaks in the transition area between the chimney and the roofing materials.

Flashing brick chimney flat roof. It s important to differentiate water coming into the firebox which could simply be entering through an uncovered flue. Instead sealing the chimney crown with a liquid sealant we used a rubber membrane. The grooves should be 1 inch 2 5 cm deep. Cut and fold pan flashing to fold up the back of the chimney and over the sidewall trim.

Rivet the pan flashing to the sidewall flashing. The flashing on a chimney is one of the biggest reasons for roof leaks. Fit the front cap flashing around the front of the chimney. Use a circular saw to saw grooves into the mortar joints.

If this is the case the chimney may simply need a chimney cap. That part of the flashing is very vulnerable to leaks. Most of the time the metal flashing has to be inserted into a slot into the face of the brick. Bend the cap flashing around the front of the chimney.

This chimney also has issues with deteriorating brick as evidenced by the fragments of spalling brick lying on the roof. Pan flashing should extend at least 12 inches up the roof plane. Materials required 26 gauge galvanized sheet steel for prefabricated pieces drive in expanding anchors galvanized coil stock galvanized front base flashing galvanized step flashing polyurethane caulk self adhering roofing membrane ice and water barrier. Saw as high as the.