Flashing A Masonary Chimney On A Metal Roof

The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak.

Flashing a masonary chimney on a metal roof. Front cap flashing and side cap flashing. Place a second piece of 8 inch 20 3 cm flashing against the chimney. But below is an. Place the step flashing over the caulk and onto the chimney.

Some sheet metal shops stock a flashing for this purpose but you ll probably have to have it made. Typically chimney flashings are more complex than other types of roof flashings and are a common source of roof leaks. Measure at the front of the chimney from the roof to the third mortar joint and add about an inch to determine the height you ll need. While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately.

Hammer 2 roofing nails into the flashing and roof. A different type of flashing is a chimney pipe boot. Apply sealant to the apron where sidewall flashings will overlap. Open valleys have metal flashing to protect this critical area of the roof.

As a rule chimneys are either masonry or metal. 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. A do it yourself video detailing step by step how to flash a chimney with our metal roofing chimney kit. Cut the bottom of the sidewall flashing at 45 degrees and the top such that it will bend around the uphill side of the chimney.

Repeat sidewall flashing on opposite side of the chimney. Slide sidewall flashing into place and fasten into the chimney with masonry anchors. 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. Round metal chimneys will be flashed much like pipes.

Instead of having to cut flashing materials yourself you can buy a fitting boot for your chimney pipe. Secure a shingle over the corner flashing using a hammer and roofing nail. Some chimneys are clad in wood stucco or aluminum siding.