How To Roof Chimney Flashing

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.

How to roof chimney flashing.

Renew flashing seals by chipping out the old mortar and caulking along the edges of the flashing. Apply a generous amount of roofing cement behind the flashing. Slide the prebent and soldered chimney saddle into place behind the chimney. Flashing is often made of metal which is the norm on a metal roof.

Cap flashing mortared or caulked into the chimney laps over the top edges of the other flashings to prevent water from running behind them. Drip edges prevent water from seeping under roofing along the edges of rakes and eaves. Secure a shingle over the corner flashing using a hammer and roofing nail. Seal the seam between the cap and step flashing with urethane roofing cement or silicone caulking compound as shown at right.

Apply roofing cement to the joint between the flashing and brick. Flashing is a method of weatherproofing the base of a chimney. A do it yourself video detailing step by step how to flash a chimney with our metal roofing chimney kit. Place a small drop of caulk where the roof and chimney meet at the chimney corner.

Use masonry nails or screws to reattach the flashing tight against the chimney. The roof deck and the brick chimney are physically separated by the chase. Continuous flashing protects the joint between a vertical wall and a sloped roof. Galvanized roofing nails about every 6 in.

Nail it to the roof along the top edge. Place the step flashing over the caulk and onto the chimney. If you were not provided with base flashing you can install step flashing up the side of the chimney. Hammer 2 roofing nails into the flashing and roof.

Seal the sides of the chimney with prebent pieces of step flashing under each course of shingles photos 4 and 5. Along the edges or closer if necessary to flatten the metal. Place a second piece of 8 inch 20 3 cm flashing against the chimney. Ensure the chimney s base flashing is in proper order secured to the roof as the manufacturer or mason recommends beneath the shingles.

Cover any exposed nail or screw heads with roofing cement. They re applied under roofing felt along eaves and over roofing felt along rakes.