Schimney Roof Counter Flashing

Flashing directs rainwater away from these junctions preventing subsequent leaks and water damage.

Schimney roof counter flashing. Counter flashing counter flashing is placed over the step flashing parallel to the chimney. Step 1 cut the mortar joint. There are different types of flashing for different chimneys but we ll focus on flashing designed for round metal pipe. Chimney flashing is a generic term for any metal or rubber boot used when a vent pipe passes through a roof.

Base flashing step flashing and counter flashing. Counter flashing provides an added measure of protection. 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. All you need to complete this project are a few tools and a little know how.

The installation of counter flashing against a chimney works together with the base and step flashing to form a waterproof system for your roof. Not only will it prevent leaks but it will also extend the life of your chimney s masonry. Properly flashing a chimney is important to prevent water from leaking between the chimney and roof and getting into the building s walls. 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.