Flashing Roof To Wall Intersections

That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above.

Flashing roof to wall intersections.

A sidewall is a junction between a wall and a sloped portion of a roof. Here s how to install it correctly. Roof shingles should be installed over the portion of step flashing on the roof. Vent flashing done right to prevent leaks back up roof vent boots with flashing counterflashing and proper shingling.

The flashing upstand is carried up under the cladding and wall underlay and the ridge flashing roofing flashing junction ridge flashing barge flashing stop end required to end of apron flashing 4 2 82 build supplement flashingssection 4 roof wall intersections. Most simply use a nominal 6 piece of lumber. Step and kickout flashing should be installed at all roof wall intersections to protect the wall and divert rainwater runoff into a gutter. The current flashing details in the 2013 international residential code irc for sloped roof wall intersections are very difficult to construct.

The horizontal part of the flashing will vary depending on the type of roof covering material. Step flashing has been required for asphalt shingles at roof to wall intersections as far back as the 1986 cabo. Installing step flashing to prevent roof leaks step flashing spans the joint between roof shingles and an adjacent side wall. 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.

With this method l shaped pieces of metal that are a couple of inches longer than the shingle overlap are installed on top of each shingle adjacent to the sidewall and the flashing is then laced into each course. Except where walls are brick the vertical part of the sidewall flashing should extend up behind the exterior wall covering just like with headwalls. Install step and kick out flashing at all roof wall intersections to protect walls from water intrusion and install boot or collar flashing at all roof penetrations to protect roofs from leaks. Our page top photograph illustrates a successful installation of flashing and counter flashing along intersection of a roof surface with the side of a brick constructed dormer.

Because most roof flashing is required to extend up the wall a minimum of 4 and some a minimum of 5. If the roof is metal or rubber membrane continuous flashing should be used rather than pieces of step flashing. The roof flashing is then placed up behind this through the wall z bar flashing on the outside of the vertical blocking backing material. Kick out flashing should be installed at the end of a roof wall intersection to divert water away from the wall and into gutters.