How To Shingle A Roof Around A Chimney

Damaged or improperly installed roof flashing especially around the chimney or dormer is one of the most common causes of roof leaks.

How to shingle a roof around a chimney.

But below is an image of a masonry chimney with a chimney head. 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. Flashing the area of a chimney with a rubber roof system is very tricky. The bent edge should fit around 1 corner of the chimney.

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. Shingle over the portion of the saddle that rests on the roof and cut the shingles neatly along the valley leaving about 2 in. The cricket can be made of shingles and roofing materials or flashed with metal. The part of the flashing that lies flush with the roof should overlap the roofing shingles.

Trim panels to fit around the chimney. Use tin snips to clip the flashing at the point where the other side of the chimney lies against the flashing. Bend the clipped flashing around the chimney. The proper installation of shingles and flashing will prevent leaks from happening saving you the trouble of reinstalling the roof before it is needed.

Bend legs up the chimney sides about 1 inch. According to the federal emergency management agency fema improper roof flashing could lead to wood rot and even deck collapse. A silent movie about flashing a metal roof into a brick chimney from unioncorrugating. 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.

Cut two opposing 45 degree notches into z closure to allow a 90 degree bend. However metal flashing crickets with seams at the apex or within the system are subject to leakage no matter how much sealant is applied.