Proper flashing around a chimney includes three layers.
Install a roof cricket.
Installing a roof cricket.
Install a waterproof membrane over the cricket sides and edges fastened to the cricket with a construction stapler.
Secure the plywood triangles to the roof decking and cricket ridge with galvanized screws.
It doesn t take an expert to spot problems simply look for water stained ceilings or other telltale signs of leaking in the vicinity of your chimney.
Caulk the joints where the cricket meets the panel and the chimney as well as the screw heads.
Rubberized membrane that runs on the roof and up the sidewall of the chimney.
Put metal flashing along the sides of the cricket nailed in place to overlap seams with the roof.
Place shingles over the cricket and nail them into place with roofing nails beginning against the back edge of the chimney and going up toward the top of the box that you cut into the roof.