Schimney Roof Counter Flashing

A piece of metal that is sealed to the chimney surface and covering the top of the step flashing to form a water tight barrier by directing water over and away from the step flashing.

Schimney roof counter flashing.

Counter flashing provides an added measure of protection. The installation of counter flashing against a chimney works together with the base and step flashing to form a waterproof system for your roof. There are different types of flashing for different chimneys but we ll focus on flashing designed for round metal pipe. Flashing refers to the metal barrier installed where the roof meets any vertical wall including chimneys and dormers.

If the systems are a masonry chimney the counter flashing should be ground into the system to ensure that the majority of the water cannot bypass the seam of the counter and step flashing. Base flashing step flashing and counter flashing. Flashing directs rainwater away from these junctions preventing subsequent leaks and water damage. Not only will it prevent leaks but it will also extend the life of your chimney s masonry.

Step 1 cut the mortar joint. Properly flashing a chimney is important to prevent water from leaking between the chimney and roof and getting into the building s walls. It directs water away from the chimney and seals off the gap between the pipe and the roof. Counter flashing counter flashing is placed over the step flashing parallel to the chimney.