Seal the sides of the chimney with prebent pieces of step flashing under each course of shingles photos 4 and 5.
How to roof chimney flashing.
With the primary flashing and counter flashing connected this differential movement could potentially allow strain to develop in the mortar or pull at fasteners in the roofing assembly.
Apply roofing cement to the joint between the flashing and brick.
Hammer 2 roofing nails into the flashing and roof.
Apply a generous amount of roofing cement behind the flashing.
If you were not provided with base flashing you can install step flashing up the side of the chimney.
Slide the prebent and soldered chimney saddle into place behind the chimney.
It s typically made of thin pieces of impenetrable material which inhibits water leaking around the chimney preserving the building from moisture and mold issues.
Drip edges prevent water from seeping under roofing along the edges of rakes and eaves.
Place the step flashing over the caulk and onto the chimney.
Use special masonry caulk to seal the joints between the flashing and the chimney.
Continuous flashing protects the joint between a vertical wall and a sloped roof.
Galvanized roofing nails about every 6 in.
The roof deck and the brick chimney are physically separated by the chase.
Place a small drop of caulk where the roof and chimney meet at the chimney corner.
Secure a shingle over the corner flashing using a hammer and roofing nail.
Nail it to the roof along the top edge.
Seal the seam between the cap and step flashing with urethane roofing cement or silicone caulking compound as shown at right.
A do it yourself video detailing step by step how to flash a chimney with our metal roofing chimney kit.
Place a second piece of 8 inch 20 3 cm flashing against the chimney.
Use masonry nails or screws to reattach the flashing tight against the chimney.
Flashing is often made of metal which is the norm on a metal roof.
Renew flashing seals by chipping out the old mortar and caulking along the edges of the flashing.
Flashing is a method of weatherproofing the base of a chimney.
They re applied under roofing felt along eaves and over roofing felt along rakes.
Roof decks and chimney move independently as they are heated by the sun.
Ensure the chimney s base flashing is in proper order secured to the roof as the manufacturer or mason recommends beneath the shingles.
