Is My Roof Steep

A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof.

Is my roof steep.

The possibility of slipping and falling makes working on any roof dangerous but it s especially so if the roof rises more than 4 feet for every 12 feet of horizontal span. See the image below for more explanation on rise run and pitch. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. In my case the roof s pitch was so extreme no local roofers wanted to mess with it.

Most roof s have a pitch in the 4 12 to 9 12 range. So a roof with four inches of rise every 12 inches horizontally run would have a slope of 4 12 sometimes displayed as 4 12. At that point measure down from the exposed butt end back to the roof surface. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.

A 12 in 12 pitch is a steep 45 degree angle roof. The slope of a roof often referred to as the pitch is determined by rise over run the roof s vertical rise in inches for every twelve inches of horizontal length the run. The tools required will be a contractor s level at least 24 inches long and a tape measure. A complex roof architecture is more time consuming to complete than a simple flat roof due to angles and fitting.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. Place the butt end of the level against the edge of the roof and extend it into the air balancing it until it becomes level. The slope or pitch of the roof is determined by the vertical rise in inches for every horizontal twelve inch 12 length called the run. The slope of the roof is known at the pitch.

Depending whether the roof area is measured horizontally. A roof with x rise 12 run slope means that for every 12 inches horizontally run it rises x inches. It affects walkability as well as drainage and roofs in areas of high rain or snowfall tend to have steeper pitches. A steep roof pitch can add to the cost of installation as it will be more time consuming to work on a steeper pitch.