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.
Roof to wall intersections.
Tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape.
Do not seal housewrap or building paper to step flashing.
A headwall is a level junction where a roof meets a wall.
Bigger step flashing is better.
Schauffele division 7 solutions inc.
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At roof to wall intersections see figure 1.
Certified air barrier specialist 007007 roy f.
As a result most typical construction does not use any type of through the wall flashing which results in leaky wall complaints.
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.
Roof wall flashing detail specifications snafus.
76 build supplement flashings section 4 roof wall intersections roof wall intersections section 4.
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.
Use step flashing that has a 2 to 4 inch longer vertical leg than normal.
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 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.
I recommend 12 in wide step flashings bent for a 5 in.
This illustration shows proper flashing at a headwall condition.
The current flashing details in the 2013 international residential code irc for sloped roof wall intersections are very difficult to construct.
They re called headwalls and sidewalls.
Roof leg and a 7 in.
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.
Roof wall intersections presented by fcsi ccpr fabaa leed green assoc.
