Parapet Only On Roof

Roof membrane temperatures ottawa canada summer day.

Parapet only on roof.

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. This also helps prevent staining on the exterior wall. 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.

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

Otherwise the required rating only applies to the inside face of the exterior wall. The german equivalent brüstung has the same meaning. Where extending above a roof a parapet may simply be the portion of an exterior wall that continues above the edge. 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.