Low Pitch Roof Construction Details

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.

Low pitch roof construction details.

Low slope structural roofing generally used on roof pitches ranging from 12 to 3 12 consists of interlocking panels commonly called standing seam roofing that run vertically along the roof surface. Perhaps the following data that we have add as well you need. Another approach is to build a cupola or ventilated doghouse in the middle of the low slope roof an approach championed by joe lstiburek. May you like low pitch roof house plans.

Some times ago we have collected galleries for your need look at the picture these are awesome galleries. A low slope roof design typically has a pitch of between 2 12 and 4 12. But the taller profiles like standing seam and pbr shown below can be installed on roofs with as low as 1 4 or 1 2 in 12 pitch. If you like and want to share you must click like share button maybe you can help.

The basic cold roof construction consists of rafters set at up to 600mm centres underlay laid horizontally over the rafters with a slight drape between each rafter and tile battens nailed directly through the underlay into the rafters. For a low slope residential roof there are two main options. 1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products. Their fasteners are either concealed or screwed at the top of a ridge which makes them less likely to leak.

A mansard roof also known as a french roof is a four sided roof with a double slope on each side that meet forming a low pitched roof. That includes soldered metal roofing or synthetic membranes. Mansard roofs can help create a great deal of extra living space. We like them maybe you were too.

Detailing a low pitch eaves the lower the roof pitch the more difficult it becomes to construct an effective eaves system particularly where roofspace ventilation is required. 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. The lower slope is much steeper than the upper. The sides can either be flat or curved depending on the style.

You must click the picture to see the large or full size photo. 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. 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. These panels generally come with a painted mill finish or a clear acrylic finish.

Then apply standard asphalt shingles over the membrane.