Flashing Shed Roof To Existing Wall

Often with new construction the roof flashing is first nailed to the wall.

Flashing shed roof to existing wall.

In all cases make sure to detail the flashing membrane so that it sheds water. Finally the housewrap can be laid up on the wall to cover the top of the kickout diverter and step flashings. Anchor a ledger to a masonry wall with expanding anchor bolts begin by marking a line across the wall for the ledger s top edge. It should tuck under the sheathing wrap above and over the flashing below.

There sometimes is a problem with movement differences of the wall and the roof decking when the flashing is fastened to both the wall and the roof. The most common roof to wall intersections involve either a gable roof with its ridge running perpendicular to the wall or a shed roof that slopes downward away from the wall. Then the house wrap and exterior wall covering are installed over this roof flashing. The narrower step flashing just isn t wide enough to protect the intersection fully.

The easiest way to accomplish this is by using smartvent as an off wall shed exhaust ventilating the shed roof without removing the existing flashing and siding off of the shed wall means one less hassle and one less chance of having the expense to replace the wall siding and losing the bid. That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above. Drill holes for the expanding anchors every 16 inches or as specified by local codes insert the anchors hold the ledger in place and tap it with a hammer to indent the anchor locations on its back face. Drip edge metal valley flashing dormer chimney and kick out flashing shed water away from the connections between roofs walls chimneys and other building assemblies this collection of 18 articles animations and videos identifies the critical roof flashing areas illustrates durable roof flashing details and shows how to flash roofs.

A lean to roof also called a shed roof slopes in one direction with rafters that rest against another structure at their high end and overhang support posts or an exterior wall at their low end. To install the roof wall flashing above the builder bent the top edge of the flashing into a 90 degree lip about 2 cm in width. Roof leg and a 7 in. Fastening to masonry walls.

Above a lower roof where it abuts the wall. Proper roof wall flashing example. I recommend 12 in wide step flashings bent for a 5 in.