Chimney Siding Flashing

The siding on the chimney and back side of these homes were in disrepair.

Chimney siding flashing.

There was a metal patch covering a hole rotted trim boards improperly installed flashing which caused much of the initial damage and wood used improperly to cover missing caulking. Proper flashing around a chimney includes two layers. It s not always possible to remove the old flashing in these spots. Improper siding and flashing details can lead to siding failure even with hardie plank.

I frequently see the sheathing and or housewrap where siding butts into a chimney. Repair of a water damaged framed chimney using low maintenance pvc corner boards and fiber cement siding. Seal the cap flashing by caulking along the mortar joint with polyurethane caulk. Metal flashing materials are used as transition pieces between the roof and chimney structures.

The first is called step flashing. Start at the front of the chimney and mark the third mortar joint up from the roof. Extend this mark around both front corners about 6 in. And more often than not the culprit is the flashing the sheet metal that keeps the intersection between the chimney and roof watertight.

Anyplace where the roof plane meets a vertical wall such as a dormer a chimney or a split level roof flashing is necessary. Flashing materials should be inspected periodically and maintained when needed to prevent leaking problems into the home interior. Vinyl siding on chimneys. The next step is to mark and cut the grooves in the chimney s mortar joints to accept the cap flashing.

1 what is the generally recognized best practice for flashing sealing this joint. Flashing for roofs chimneys windows decks siding and exterior trim residential and commercial flashing installation services copper flashing is one of the most durable of roof flashing materials.