The cricket can be made of shingles and roofing materials or flashed with metal.
How to shingle a roof around a 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.
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.
Flashing the area of a chimney with a rubber roof system is very tricky.
Bend legs up the chimney sides about 1 inch.
If you hit a stack vent or chimney interlace the shingles with the flashing to allow water to run down the roof.
The proper installation of shingles and flashing will prevent leaks from happening saving you the trouble of reinstalling the roof before it is needed.
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.
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.
That part of the flashing is very vulnerable to leaks.
A silent movie about flashing a metal roof into a brick chimney from unioncorrugating.
Damaged or improperly installed roof flashing especially around the chimney or dormer is one of the most common causes of roof leaks.
The part of the flashing that lies flush with the roof should overlap the roofing shingles.
The flashing on a chimney is one of the biggest reasons for roof leaks.
And the upper counterflashing.
Comprised of step tins rubber or some other type of membrane.
A piece of metal that is sealed to the chimney surface and covering the top of the step flashing to form a water tight barrier by directing water over and away from the step flashing.
The lower step flashing.
The bent edge should fit around 1 corner of the chimney.
Instead sealing the chimney crown with a liquid sealant we used a rubber membrane.
Use tin snips to clip the flashing at the point where the other side of the chimney lies against the flashing.
Panels above the chimney should be removed.
But below is an image of a masonry chimney with a chimney head.
Trim panels to fit around the chimney.
Continue laying your shingles horizontally up the roof.
Hammer 4 galvanized roofing nails into.
Shingle over the portion of the saddle that rests on the roof and cut the shingles neatly along the valley leaving about 2 in.
Cut two opposing 45 degree notches into z closure to allow a 90 degree bend.
Bend the clipped flashing around the chimney.
However metal flashing crickets with seams at the apex or within the system are subject to leakage no matter how much sealant is applied.
A typical roof to chimney flashing will consist of two parts.
