Low Slope Shed Roof

Most local building codes consider a roof to be low slope when its pitch ranges from 4 12 and below down to and including 2 12.

Low slope shed roof.

Sheds rain and snow quickly. Low slope shed roofs that range in pitch from nearly flat to 4 over 12 are common in the southwest and in dense urban neighborhoods of the northeast. The loft space would be much larger with a roof pitch of 45 degrees. Some builders even choose to match it directly especially if the shed s roof is attached to the house on the high side and just one simple span pitch.

However if you choose to build a freestanding shed and use this style of roof you should plan the slope of your roof in such a manner as to slope down from the front to the back of the shed. The roof is typically sloped down from the connecting wall if the shed is attached to the side of your house or garage. 2 where the roof is not visible consider upgrading to a single ply roofing intended for low slope roofs. Snow can build up against the lower roof wall and cause dampness or rot in the wall.

Asphalt shingles with certain application adjustments can generally be installed down to slopes of 2 12. Clear roof space without truss or rafters. 1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many. This image shows a relatively shallow roof pitch of 15 degrees.

While most skillion roofs shed water well if yours has a very low slope you may notice some drainage issues. Having a steeper pitched roof allows for more space in a shed loft. Snow may also build up more on a shed roof with a low slope. Expensive to convert a mono pitched roof to a multi slope roof since all walls need to become the same height.

Another widely used method is to follow the house s roof pitch on one side building the ridge off center then sloping down more drastically on the shorter side which will be closer to the house. But for those lower slopes from 2 12 down to 1 2 12 you ll want a membrane system like roof fast. A quarter inch slope is the lowest you would go with a metal roof experts recommend at least a half inch minimum to ensure a weatherproof interior for your shed. A lower slope makes it more challenging for the water to run off the roof which may cause some pooling.

Remember metal roofing is more expensive than shingles.