Parapet Only On Roof

Courtesy of max baker and the national research council of canada.

Parapet only on roof.

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. The figure above shows the individual components to be considered in a parapet condition it starts with managing the flow of water on the parapet coping cap which is sloped back to the roof system. Illustrated above is a real time roof measurement of a commercial structure with a parapet wall. The minimum height of a parapet wall above the roof surface is 30 inches.

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. This also helps prevent staining on the exterior wall. Where the roof membrane meets the parapet wall the membrane should be installed to allow for the possibility of differential movement and. Roofing material must extend up a portion of the parapet wall as well.

Clearoof high resolution imagery available only on the iroofing app takes the satellite image and sharpens it for easier faster measurement. Otherwise the required rating only applies to the inside face of the exterior wall. 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. A parapet is a barrier that is an extension of the wall at the edge of a roof terrace balcony walkway or other structure the word comes ultimately from the italian parapetto parare to cover defend and petto breast.

However when a roof slopes down toward an exterior wall and parapet with a slope greater than 2 12 further analysis is required to determine if a taller parapet is necessary.