Parapet Detail Flat Roof

Waterproof membrane to prevent water penetrating the structure and interior of the building.

Parapet detail flat roof.

See more ideas about parapet architecture details construction drawings. To wall sloped roof no overhang ledger support. Height of roofing at wall. The assembly is straight forward but what complicates matters is that the roof needs to be vented.

A flat roof usually consists of the following. Exterior wall parapet rafters prep. Minimum of 12 to top of parapet. Free cad dwg download of a parapet wall to be used in your roof design cad drawings.

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. A parapet is a part of a roof that eliminates the danger of a flat roof while opening up a wealth of opportunities to use roof space safely and effectively. Parapets dramatically reduce these pressure differences at roof edges figure 3. Although flat roofs are cheaper to build than pitched roofs they have a shorter life span.

When wind blows against a building it produces vortices at the roof edges that create huge pressure differences at roof perimeters that can suck roofs off buildings. The parapet itself is standard wood framing with an applied siding in this case t g 1 4 cedar. Common penetration details include soil vent pipes hot pipes from boiler flues or log burners electrical cables for air conditioning units extraction ducting and tracks for mechanical window cleaning systems. To address these conditions detailing must provide excellent bulk water management of roofing parapet wall and parapet cap venting to promote drying and careful attention to separating the parapet from interior spaces.

100 dan road canton ma 02021 phone 1 800 451 2504 sales 1 800 576 2358. At the highest point of the sloped roof the parapet is about 10 tall at the lowest point the parapet is about 14 tall.