A continuous sheet metal apron across the chimney s downslope face l shaped step flashing running up both sides and when the chimney sits below the roof ridge a cricket or saddle running across the upslope face.
How to flash a metal chimney with metal roof.
Fold closure 90 degrees and.
Bend legs up the chimney sides about 1 inch.
Use metal screws or nails to hold the overlaps together then apply caulking material on the seams to seal them off.
A do it yourself video detailing step by step how to flash a chimney with our metal roofing chimney kit.
As the side base flashing approaches the valley flashing it will have to be shaped to lie in the lower trough section of the roofing so that the second sheet of roofing will lie flat.
Trim panels to fit around the chimney.
Base flashing has several components.
First fasten the lower sheet of roofing in place alongside the chimney then install the base flashings at the bottom and sides of the chimney.
If you install a number of flashing segments you need to overlap these segments at about 4 to 6 inches from the previous sheet to prevent gaps.
A cricket is sloped like a tent roof to deflect water around the chimney.