Proper Chimney Flashing Metal Roof

A second layer of metal is embedded in the chimney mortar joints and folded down to cover the top of the step flashing.

Proper chimney flashing metal roof.

The first is called step flashing. The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak. L shaped aluminum are woven into the shingle courses and lapped up the side of the chimney. Bend a piece of cap flashing to fit around the top corner of the chimney and add the cap flashing across the back of the chimney.

Place a second piece of 8 inch 20 3 cm flashing against the chimney. Pound the flashing into the grooves and fasten with the drive in expanding anchors. Hammer 2 roofing nails into the flashing and roof. Panels above the chimney should be removed.

The flashing should partially overlap the shingle that covers the first piece of flashing. Most flashing is made of galvanized metal but diy ers may prefer aluminum flashing because it s easier to bend. A silent movie about flashing a metal roof into a brick chimney from unioncorrugating. Drip edge metal valley flashing dormer chimney and kick out flashing shed water away from the connections between roofs walls chimneys and other building assemblies this collection of 18 articles animations and videos identifies the critical roof flashing areas illustrates durable roof flashing details and shows how to flash roofs.

Trim panels to fit around the chimney. Cut two opposing 45 degree notches into z closure to allow a 90 degree bend. Next comes the counterflashing. These work better on smaller round chimneys and may be ideal for a stove chimney in a metal roof.

Place the step flashing over the caulk and onto the chimney. Cut the side cap flashing to fit the angle of the roof so it overlaps each lower cap flashing at least 2 in. Proper flashing around a chimney includes two layers. The first is called step flashing.

These problem areas include the edges of skylights and chimneys soil stacks vent fans and roof valleys as well as the intersection of the roof deck and dormer walls. Next comes the counterflashing. Sections of l shaped sheet metal are woven into the shingle courses and lapped up the side of the chimney. Secure a shingle over the corner flashing using a hammer and roofing nail.

Bend legs up the chimney sides about 1 inch. Flashing provides the extra protection these spots need. The second layer of metal usually consisting of either lead or copper. While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately.

Proper flashing around a chimney includes two layers. Instead of having to cut flashing materials yourself you can buy a fitting boot for your chimney pipe.