Sloped Roof 2 Per 12

Download the slope chart pdf.

Sloped roof 2 per 12.

A flat roof has a slope of 2 in 12 or less. Conventional roofs are the easiest to construct and you can walk on them safely. There are two main categories of roofing. The most common slopes are.

3 12 1 2 12 and 1 4 12. A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance. For example if you measure 4 inches the pitch of your roof is 4 12. That means the roof doesn t shed water as easily as steeper roofs which is why choosing the right type of roofing material is so important.

The run always remains constant at 12 inches. If a roof rises 2 in a length of 12 this is 2 12 roof pitch. They have a pitch ranging from 4 12 to 9 12. These roofs have a pitch less than 4 12.

High pitched roofs often need extra fasteners and their pitch can be as high as 21 12. Once you ve figured out the pitch of your roof you can consult the following chart to discover the slope factor and hip valley factor. This means for every 12 horizontal units the roof must rise a minimum of 2 vertical units. Roof slope style.

Simply put it s a shallow roof. Metal roof slope is expressed by a ratio indicating the roof pitch which notes the vertical rise of the roof in inches for every 12 inches the roof runs horizontally in other words dividing the vertical rise and its horizontal span. A low slope roof is anywhere from 2 in 12 to 4 in 12. You can also calculate roof pitch even without using a roof slope calculator.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. 2 12 roof pitch angle 9 46 degrees. Clay and concrete tile. Most roof s have a pitch in the 4 12 to 9 12 range.

Also if asphalt shingles are installed on a roof slope of 2 12 to 4 12 it shall be provided with a double underlayment application. Pitch of roof slope factor valley hip factor. That is the roof s rise.