Roof To Wall Intersections

A headwall is a level junction where a roof meets a wall.

Roof to wall intersections.

At roof to wall intersections see figure 1. As a result most typical construction does not use any type of through the wall flashing which results in leaky wall complaints. 4 1 roof to wall junction 78 4 2 roof junction detail 81 4 3 tricky lean to junction 85 4 4 so t detail at gable verge 88 4 5 parapet or balustrade to wall junction 90. We describe the different flashing materials that can be used how and where flashing should be installed at various building wall intersections and corners at the intersection of a roof and building wall at other locations and how to seal these locations against leaks or insect damage.

76 build supplement flashings section 4 roof wall intersections roof wall intersections section 4. Bigger step flashing is better. Finally the housewrap can be laid up on the wall to cover the top of the kickout diverter and step flashings. Yes even flat roof to wall intersections are not being properly done.

They re called headwalls and sidewalls. Here is an attempt though maybe not a very good one to make the roof flashing serve also as a through the wall flashing with a. Schauffele division 7 solutions inc. Certified air barrier specialist 007007 roy f.

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. The narrower step flashing just isn t wide enough to protect the intersection fully. I recommend 12 in wide step flashings bent for a 5 in. For deck flashing.

Places where roofs and walls intersect are very common. This article illustrates and discusses alternate or rather goofy attempts at roof wall intersection flashing to prevent leaks water damage and points out where leak risks may remain. Use step flashing that has a 2 to 4 inch longer vertical leg than normal. Credit s earned on completion of this course will be reported to aia ces for aia members.

Roof wall intersections presented by fcsi ccpr fabaa leed green assoc. Roof leg and a 7 in. Roof wall flashing detail specifications snafus. Tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape.

This illustration shows proper flashing at a headwall condition.