Low Pitch Epdm Roof Details

For a low slope residential roof there are two main options.

Low pitch epdm roof details.

1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products. People don t like the look of the exposed membrane so there is always a temptation to shingle over the lower roof membrane. In many instances the lower roof is deep enough that the exposed roofing isn t visible from the ground. Many details call for an 8 to 12 inch vertical but this just isn t sufficient.

The detail drawings are grouped by detail type and can be downloaded below in dwg or pdf format. If the upper edge of a low slope shed roof intersects a vertical wall the most logical approach in my opinion is to detail the roof as an unvented roof. Installation is important when it comes to putting a single ply roofing system on a building. By low slope roofing we mean any roof that is pitched at less than 4 inches of rise in 12 inches of run or 4 12 pitch.

Fleece backed epdm has been used as a separator when the substrate consists of an old bituminous roof containing soft bitumen e g. That includes soldered metal roofing or synthetic membranes. Low pitch roof construction repair and replacement with a classicbond epdm rubber roofing membrane an epdm rubber roof can be used for low pitched roofs. The conservation technology epdm roofing system offers any homeowner builder or roofer the means to reliably and permanently waterproof low slope roofs rooftop decks and green roofs.

Respondents to the study said they expected the life cycle cost of a metal roof including outlays for maintenance to be about 30 cents a square foot per year far less than their expectations for built up and single ply roofs at 37 cents and 57 cents. Ballasted systems are limited to a maximum slope of 2 inches per foot 2 percent. This was confirmed in a 2005 study of low slope roofing conducted by ducker international. Firestone has developed cad drawings of its epdm installation details to assist roofing professionals with the specification of firestone epdm roofing systems.

In most cases we custom fabricate a single sheet the size of each roof eliminating the risks associated with field seaming. Unlike other traditional roofing materials the rubber membrane is incredibly versatile and easy to install on a wide range of surfaces and angles. Videos have been put together for many of these details and can be found below. Another approach is to build a cupola or ventilated doghouse in the middle of the low slope roof an approach championed by joe lstiburek.

There are over 150 variations of details available from carlisle syntec for epdm roofing systems. The membrane will outlast the shingles and seal around all nail penetrations. Regular asphalt shingles and standard skylights will work at pitches of 4 12 or greater but at lower pitches you have to use different materials. Hold your cursor over the file name to view when a drawing was last updated.