Flashing A Shed Roof To A Wall

Stepped flashing is used where a sloped shingled roof intersects a vertical wall.

Flashing a shed roof to a wall.

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. Finally the housewrap can be laid up on the wall to cover the top of the kickout diverter and step flashings. These problem areas include the edges of skylights and chimneys soil stacks vent fans and roof valleys as well as the intersection of the roof deck and dormer walls. 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.

Flashing provides the extra protection these spots need. In all cases make sure to detail the flashing membrane so that it sheds water. 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. It should tuck under the sheathing wrap above and over the flashing below.

Often with new construction the roof flashing is first nailed to the wall. Under the eaves of a roof with little overhang and no gutters. Open valleys have metal flashing to protect this critical area of the roof. The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak.

The narrower step flashing just isn t wide enough to protect the intersection fully. Roof leg and a 7 in. Bigger step flashing is better. 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.

Proper roof wall flashing example. I recommend 12 in wide step flashings bent for a 5 in. That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above. Step flashings are interwoven with the shingles and act essentially as shingles with an upturned leg to allow a transition of the vertical drainage plane of the wall to the drainage plane of the roof.

Above a lower roof where it abuts the wall. Where an attached backyard deck meets the house.