Flashing Between Brick Chimney And Siding

And more often than not the culprit is the flashing the sheet metal that keeps the intersection between the chimney and roof watertight.

Flashing between brick chimney and siding.

Sections of l shaped sheet metal are woven into the shingle courses and lapped up the side of the chimney. This flashing would be sealed between it and the brick with you guessed it silicone caulk. The closed cell foam won t rot or soak up water just be sure to use enough blue tape to protect the brick and siding from the expanding foam. From there you have the choice of installing several types of flashing which would extend behind the vinyl siding and over a few inches of the brick.

For fireplace boxes and chimneys apply caulking along both parts at the back to ensure a vertical seal at the brick. Thu feb 01 2007 7 13 pm our ma cider mill had a chimney that sttod proud of the siding which went all the way across behind it. Occasionally however it is found on chimneys installed on top of wood furring strips that provide a 1 inch clearance between the chimney and the siding. Proper flashing around a chimney includes two layers.

The first is called step flashing. Again only about 1 2 to 3 4 inch gap. Repair of a water damaged framed chimney using low maintenance pvc corner boards and fiber cement siding. 5 press the flashing into place at the transition.

Up behind the siding when i pulled off the trim and some siding tar paper the board osb right along the brick chimney was crumbling away from the ledge down but only on the right side of the chimney. Pieces of 18 inch wide flashing installed prior to the brick work but on top of the house wrap in a stepped fashion periodically laying on top of the lapped upper portion of the siding to get the water back to the exterior of the wall is more along the lines that i would be thinking of. The original joint between house and chimney should be sealed first.