Roof To Wall Intersections

Roof leg and a 7 in. 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. The flat roofing material must go up the wall a minimum of 12 or up the wall and over the top of the wall if the wall is less than 12 high.

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Roof to wall intersections. The narrower step flashing just isn t wide enough to protect the intersection fully. 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. This illustration shows proper flashing at a headwall condition. Finally the housewrap can be laid up on the wall to cover the top of the kickout diverter and step flashings.

As a result most typical construction does not use any type of through the wall flashing which results in leaky wall complaints. 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. 76 build supplement flashings section 4 roof wall intersections roof wall intersections section 4.

Tape the top of step ﬂashing with 4 inch wide minimum self adhering modiﬁed bitumen roof tape. 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. For deck ﬂashing. At roof to wall intersections see figure 1.

They re called headwalls and sidewalls. Roof wall intersections presented by fcsi ccpr fabaa leed green assoc. Do not seal housewrap or building paper to step ﬂashing. The current flashing details in the 2013 international residential code irc for sloped roof wall intersections are very difficult to construct.

A headwall is a level junction where a roof meets a wall. Credit s earned on completion of this course will be reported to aia ces for aia members. Yes even flat roof to wall intersections are not being properly done. 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.

Bigger step flashing is better. Certified air barrier specialist 007007 roy f. Roof wall flashing detail specifications snafus. I recommend 12 in wide step flashings bent for a 5 in.

Use step ﬂashing that has a 2 to 4 inch longer vertical leg than normal.