How To Flash A Chimney On A Corrugated Metal Roof

Instead of having to cut flashing materials yourself you can buy a fitting boot for your chimney pipe.

How to flash a chimney on a corrugated metal roof.

This flashing is super thin and very flexible to curve around the humps in the metal roofing. The flashing can be installed quickly and easily with kits that use rubber pipe boots. Following is the proceedure for installing the dsa flashing. How to install a flashing on a metal roof.

When visualizing a flashing strategy for the down slope face of the chimney picture the plane of the roof at the top of the ridges not at the lower flat portion of the. I prefer to use a dsa flashing also known as a dead soft aluminum flashing. You can call us with any questions you may have. Bend legs up the chimney sides about 1 inch.

These work better on smaller round chimneys and may be ideal for a stove chimney in a metal roof. Pound the flashing into the grooves and fasten with the drive in expanding anchors. Trim panels to fit around the chimney. The rubber boot is trimmed to fit around the pipe and then secured to the roof with screws and sealant.

I have to flash a chimney where it penetrates a corrugated metal roof with ridges 8 inches o c. The evenly spaced ridges of the roofing profile present a real challenge. Chimney pipes on metal roofs must be flashed in order to create a watertight seal around the pipe and prevent leaks through the roof. Panels above the chimney should be removed.

Cut the side cap flashing to fit the angle of the roof so it overlaps each lower cap flashing at least 2 in. Cut two opposing 45 degree notches into z closure to allow a 90 degree bend. 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.