Flat Roof Parapet Wall Detail

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Flat roof parapet wall detail. Parapet walls are a difficult detail with a long history of failure. See more ideas about parapet architecture details construction drawings. Parapet detail masonry cavity wall flat roof with parapet insulation above joists. The drawing below shows how the parapet wall meets with the sloped roof note that the flashing extends up the parapet wall a minimum of 8.

Traditionally constructed parapet walls can become saturated with rain and are also subject to extremes of heat and cold leading to expansion of the masonry. Ultimately a flat roof should play a part in a total architectural composition and has the ability to enhance the aesthetic and practical outcomes of a home. Courtesy of max baker and the national research council of canada. The parapet wall needs to be tall enough for both the base flashing and the cap flashing to work together and provide the required venting.

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. Unlike standard exterior walls parapet walls are exposed to the elements on three sides. Free cad dwg download of a parapet wall to be used in your roof design cad drawings. To wall sloped roof no overhang ledger support.

Flat roofs come in many shapes and sizes which include parapet roofs roof decks and green roofs to name just a few of the options available. Exterior wall parapet rafters prep. 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. 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.

Parapet walls behave differently to conventional cavity walls because of their location at the very top of a building where both skins of the parapet are outer skins and as such are exposed to moisture. Timber frame flat roof detail. Parapet detail masonry cavity wall flat roof with parapet insulation above joists. Timber frame flat roof detail.