Low Slope Roof Framing Details

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.

Low slope roof framing details.

Designers and specifiers should pay close attention to roofing details in these areas and. Low slope metal roofs have been a preferred roof covering for commercial institutional and industrial buildings for years because of their ability to protect against the elements to allow water to drain away from the roof surface and to keep building contents and occupants dry and comfortable. Low slope metal roofs provide years of low cost low maintenance performance. Flat low slope and steep slope a gambrel is a combination of a low and steep slope.

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. Just like any other roofing system low slope roof designs will have several effects on the overall construction of the building including the interior volume the style and design of the house the drainage system and the material used for covering. Many times the low slope is dictated by the building geometry. 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.

These critical junctures account for the majority of roof leaks. Types of the roof by slope. The pitch is more relevant to the construction of the building and calculating material needs and the slope to the roof construction. Flat roof has a slope of 2 12 or less it is usually.

There are 3 main types of roofs. The most critical application points on low slope roof systems are at flashings penetrations and accessories. 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. 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.

A low slope roof design typically has a pitch of between 2 12 and 4 12. 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.