Rubberized membrane that runs on the roof and up the sidewall of the chimney.
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.
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.
Sep flashing is an l shaped sheet metal are woven into the shingle courses and lapped up the side of the chimney.
Because chimneys are such a potential trouble spot consider installing a roof cricket as well as inspect them once every year or two.
Secure the plywood triangles to the roof decking and cricket ridge with galvanized screws.
Reinstall the roof panel under the cricket snapping its seams back in place.
Put metal flashing along the sides of the cricket nailed in place to overlap seams with the roof.