Slope Roof Paropet

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.

Slope roof paropet.

However roof pitch is technically measured and defined differently and will not be discussed here. Roofing association manuals as well as the code book specify a minimum slope of 1 4 inch per foot for low slope roofing. 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. One cool trick is to use a slope kit consisting of sheets of foam that are tapered to provide the necessary slope.

The minimum slope for a flat roof. But this slope doesn t need to be extremely steep and when covering a large property the angle of the flat roof can be near invisible to the naked eye. We are creating a well ventilated space above the well insulated low slope roof and have vertical 3 4 strapping creating a drainage plane for the gable end wall. This is necessary for allowing water to run off of the epdm membrane surface and towards an appropriate drainage system.

The perimeter of the roof assembly insulation is wrapped to prevent interstitial airflow from the parapet into the multilayered rigid insulation of the field of the roof. I e 4 inches of rise per 12 inches one foot of run. If a roof slope rises say 4 inches when measured 12 inches along the bottom of a horizontal roof truss the roof slope is said to be 4 12. The cure for parapetitus is continuity of the control layers and letting things move when they have to move.

Note that roof pitch is sometimes used in parallel with roof slope. Max baker and stonewall jackson would be proud. Despite the name all flat roofs need to be slightly angled in some direction.