Parapet Detail Flat Roof

A roof is considered to be flat when it is of a slope of 1 5o to the horizontal.

Parapet detail flat roof.

Free cad dwg download of a parapet wall to be used in your roof design cad drawings. Exterior wall parapet rafters prep. 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. Nov 30 2014 explore alex radford foster s board parapet detail on pinterest.

Waterproof membrane to prevent water penetrating the structure and interior of the building. To wall sloped roof no overhang ledger support. 100 dan road canton ma 02021 phone 1 800 451 2504 sales 1 800 576 2358. 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.

Although flat roofs are cheaper to build than pitched roofs they have a shorter life span. A flat roof usually consists of the following. See more ideas about parapet architecture details construction drawings. Height of roofing at wall.

The parapet itself is standard wood framing with an applied siding in this case t g 1 4 cedar. Parapets dramatically reduce these pressure differences at roof edges figure 3. The assembly is straight forward but what complicates matters is that the roof needs to be vented. 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. 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.