Parapet Pitched Roof Detail

I m having an extension built at the moment which includes a pitched roof down to a box gutter and parapet wall.

Parapet pitched roof detail.

The parapet itself is standard wood framing with an applied siding in this case t g 1 4 cedar. Courtesy of max baker and the national research council of canada. Parapet detail masonry cavity wall flat roof with parapet insulation above joists. I am planning a lean to pitched roof on my house with velux windows but not ceiling joists as i want it to be vaulted.

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. 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. Flat roof details and information relating to insulating a flat roof. The assembly is straight forward but what complicates matters is that the roof needs to be vented.

76 build supplement flashings section 4 roof wall intersections roof wall intersections section 4. If you didn t get it right you concentrated the stresses at roof edges and you could suck in a parapet or tear or rip a membrane at the parapet photographs 3 and 4. At the highest point of the sloped roof the parapet is about 10 tall at the lowest point the parapet is about 14 tall. Roof membrane temperatures ottawa canada summer day.

Here are some new building regs drawings including mansard roof edge parapet wall box gutter verge detail pitched roof flat roof abutment threshold welted drip for external gutter pitched roof to wall junction timber frame timber clad eaves details window frame window lintel window sill manholes soakaway sanitary pipework basements etc. 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. 100 dan road canton ma 02021 phone 1 800 451 2504 sales 1 800 576 2358. Although flat roofs are cheaper to build than pitched roofs they have a shorter life span.

I ve uploaded the section from the building regs drawings which show that the design has the roof joists on hangers and then the box gutter sat on top of the inner leaf of the cavity wall.