How To Shingle A Roof Around A Chimney

Panels above the chimney should be removed.

How to shingle a roof around a chimney.

The bent edge should fit around 1 corner of the chimney. How to buy chimney flashing making sharp straight bends in sheet metal is tricky unless you have access to a tool called a sheet metal bending brake. Hammer 4 galvanized roofing nails into. Cut two opposing 45 degree notches into z closure to allow a 90 degree bend.

The part of the flashing that lies flush with the roof should overlap the roofing shingles. Installing shingles around the chimney is particularly important as the joins between the surface of the roof and the vertical surface of the chimney creates the ideal place for leaks to occur. Trim panels to fit around the chimney. Flashing the area of a chimney with a rubber roof system is very tricky.

According to the federal emergency management agency fema improper roof flashing could lead to wood rot and even deck collapse. However metal flashing crickets with seams at the apex or within the system are subject to leakage no matter how much sealant is applied. Damaged or improperly installed roof flashing especially around the chimney or dormer is one of the most common causes of roof leaks. Now images of specifications for a chimney head flashing are hard to find for some reason they always like to show a cricket behind the upper side of a chimney.

The cricket can be made of shingles and roofing materials or flashed with metal. Shingle over the portion of the saddle that rests on the roof and cut the shingles neatly along the valley leaving about 2 in. But below is an image of a masonry chimney with a chimney head. Bend the clipped flashing around the chimney.

This head flashing view from lower on the roof shows it extending beyond the width of the chimney and diverting the runoff around the edges of the masonry chimney. Bend legs up the chimney sides about 1 inch.