Schimney Roof Counter Flashing

There are different types of flashing for different chimneys but we ll focus on flashing designed for round metal pipe.

Schimney roof counter flashing.

Step 1 cut the mortar joint. Counter flashing counter flashing is placed over the step flashing parallel to the chimney. 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. Not only will it prevent leaks but it will also extend the life of your chimney s masonry.

The installation of counter flashing against a chimney works together with the base and step flashing to form a waterproof system for your roof. Counter flashing provides an added measure of protection. 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.

Properly flashing a chimney is important to prevent water from leaking between the chimney and roof and getting into the building s walls. Three types of flashing are typically used on each roof. All you need to complete this project are a few tools and a little know how. Chimney flashing is a generic term for any metal or rubber boot used when a vent pipe passes through a roof.