Parapet Roof Intersection

The addition of a parapet makes a flat roof far safer providing a small barrier that provides additional security to reduce the likelihood of anyone standing the roof falling over the edge.

Parapet roof intersection. The most common mistake at this intersection is to allow the metal coping to but up to the wall without the application of termination metal. Just as the roof parapet historically served to provide building occupants with a safe barrier against external attack the railing height roof to wall intersection for garden roof returns it to its primarily protective role. Parapetitus they have a long history which of course is not always clear that allows me to embellish without threat of peer review reversal. A parapet roof is simply put when a building s outermost walls extend upwards past the roof around the edges most often by a few feet.

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. If there s no other way to address this maybe you could use tji blocking knock out a few of the pre punched web holes and call it vented. It s also the junction where building aesthetics meets structural performance air and moisture management energy efficiency construction trade sequencing and operational maintenance. The parapet is so much more than the intersection of roof and wall.

76 build supplement flashings section 4 roof wall intersections roof wall intersections section 4. A critical and often overlooked design detail is at the termination of a parapet coping at a wall. A parapet roof is a flat roof with the walls of the building extending upwards past the roof by a few feet around the edges. While a roof parapet wall may seem like a small detail in the grand scheme of the entire building design it can actually change the dynamic of an entire roof both in terms of cosmetic detailing and safety.

1 their major function today aside from confusing architects is to protect the edge of roof assemblies from wind uplift forces. Historically so many problems have occurred with parapets that we have a name for it. Terminate roofing on parapet wall with mechanically fastened termination bar. Yes even flat roof to wall intersections are not being properly done.

I just use a fairly dense cant strip over top of that intersection between the roof and parapet and it seems to be working fine. Roof membrane must lap up wall to minimum of 12 above roof plane or per specifications whichever is greater.