Flat Roof Parapet Gutter Detail

Timber frame flat roof detail.

Flat roof parapet gutter detail.

The cantilevered roof overhangs have a gravel stop metal flashing piece at the roof edge concealing the slope. Gutters are often a viable option for flat roofs directing water on the outside of the structure to downspouts. The first example below shows a hybrid of traditional flat roofs. On a flat roof there is usually a small wall called a parapet at the edge of the roof.

Details and technical drawings of the flat roof drainage as downloads in the practical pdf dxf and dwg formats. 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. Gutters can also be installed to work in tandem with a scupper system. It is used at a single ply roof membrane sloped per foot to a gutter like on the bainbridge residence that we designed and built above.

Parapet detail masonry cavity wall flat roof with parapet insulation above joists. The parapet itself is standard wood framing with an applied siding in. Courtesy of max baker and the national research council of canada. At the highest point of the sloped roof the parapet is about 10 tall at the lowest point the parapet is about 14 tall.

Parapet detail masonry cavity wall flat roof with parapet insulation above joists. Roof membrane temperatures ottawa canada summer day. The main roof beyond has a coping cap flashing piece over the parapet wall. At this point its time to discuss the overflow required by code.

In reality a flat roof isn t fully level and flat roofs built for gutters should direct water to one or more sides where the gutters are installed. Flat roof detail masonry cavity wall flat roof insulation above and between joists. This is a potentially very dangerous situation. If this parapet is much higher than the drain and the drain gets clogged water will build up on the roof like a swimming pool.