Low Slope Roof Framing Details

Designers and specifiers should pay close attention to roofing details in these areas and.

Low slope roof framing details.

These critical junctures account for the majority of roof leaks. 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. The most critical application points on low slope roof systems are at flashings penetrations and accessories. Low slope metal roofs provide years of low cost low maintenance performance.

Roof penetrations should be kept to a minimum and should be located within the flat of the panel where possible as opposed to near seams. Wide width roof areas that simply must be lower slope to limit the overall height of the roof building as a practical matter he says. 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. There are 3 main types of roofs.

As in all construction work paying attention to the little details can make all the difference between a long lasting trouble free project and one that results in callbacks and early failure never a good option with a new england roof. Generic valley treatment details for metal panel roofs for low slope with and without substrates are included in the mbma metal roofing systems design manual chapter 12 metal roof details. Many times the low slope is dictated by the building geometry. Types of the roof by slope.

Problems at these points typically arise from improper application methods and the use of inappropriate or incompatible materials. A low slope roof design typically has a pitch of between 2 12 and 4 12. Resso concurs that low slope metal roofing differs from steep slope roofing in that resistance to water infiltration through panel seams is an even more crucial aspect of the system design. In either case find a professional roofing contractor experienced with low slope roofs and these specific products.

Flat roof has a slope of 2 12 or less it is usually. The pitch is more relevant to the construction of the building and calculating material needs and the slope to the roof construction.