Parapet Detail Flat Roof

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.

Parapet detail flat roof.

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. A roof is considered to be flat when it is of a slope of 1 5o to the horizontal. 100 dan road canton ma 02021 phone 1 800 451 2504 sales 1 800 576 2358. Although flat roofs are cheaper to build than pitched roofs they have a shorter life span.

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. At the highest point of the sloped roof the parapet is about 10 tall at the lowest point the parapet is about 14 tall. See more ideas about parapet architecture details construction drawings. What types of penetration are typically required in flat roofs.

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. 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. Parapets dramatically reduce these pressure differences at roof edges figure 3. The parapet itself is standard wood framing with an applied siding in this case t g 1 4 cedar.

A flat roof usually consists of the following. Waterproof membrane to prevent water penetrating the structure and interior of the building. Exterior wall parapet rafters prep. The assembly is straight forward but what complicates matters is that the roof needs to be vented.

To wall sloped roof no overhang ledger support. Nov 30 2014 explore alex radford foster s board parapet detail on pinterest.