How To Flash A Chimney On A Steel Roof
The roofing the cricket valley and the chimney base flashing all come together at the chimney corners and must overlap in the proper order.
How to flash a chimney on a steel roof. Apply butyl tape to the underside of the closure. 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. A do it yourself video detailing step by step how to flash a chimney with our metal roofing chimney kit.
Cut two opposing 45 degree notches into z closure to allow a 90 degree bend. Place a second piece of 8 inch 20 3 cm flashing against the chimney. Installation takes about 15 minutes. Use metal screws or nails to hold the overlaps together then apply caulking material on the seams to seal them off.
Fold closure 90 degrees and. Hammer 2 roofing nails into the flashing and roof. Place the step flashing over the caulk and onto the chimney. Panels above the chimney should be removed.
Chimney pipes on metal roofs must be flashed in order to create a watertight seal around the pipe and prevent leaks through the roof. When the chimney penetrates the roof below the ridge use a cricket on the up slope side to divert water around the chimney. Place a small drop of caulk where the roof and chimney meet at the chimney corner. Bend legs up the chimney sides about 1 inch.
Rubber boot kits can be purchased online or at a roofing supply store for about 15.