Outside of the u s a degree angle is typically used.
Roofing for roof with 4 12 slope.
Thus a moderate 6 in 12 roof pitch means the roof rises 6 inches for every 12 horizontal inches it runs.
Examples of extreme slopes range from 1 4 12 almost flat to 12 12 sloping down at a perfect 45 degree angle.
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.
For most home styles roof pitches fall in a range 4 12 a moderate slope up to 8 12 fairly steep.
Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area.
The pitch of the roof is the rise over a 12 inch run.
The table below shows common roof pitches and the equivalent grade degrees and radians for each.
In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches.
Most roof s have a pitch in the 4 12 to 9 12 range.
A roof s pitch is determined by how much it rises for every foot it runs.
A flat roof has a slope of 2 in 12 or less.
A low slope roof is anywhere from 2 in 12 to 4 in 12.
Use our roof pitch calculator to find the pitch of your roof.
For example a 4 12 pitch roof that is 100 square feet.
A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance.
Roof pitch area multipliers.
There are two main categories of roofing.
It is often compared to slope but is not exactly the same.
The rise is the distance from the top of a stud wall to the peak of the roof.
This will give you the rise over run or pitch.
Simply put it s a shallow roof.
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.
That is the roof s rise.
The run always remains constant at 12 inches.
21 12 and higher steep slope roofing products.
Roof slope style.
A 4 12 roof pitch indicates the roof rises 4 inches in height for every 12 inches as measured horizontally from the edge of the roof to the centerline.
A 12 in 12 pitch is a steep 45 degree angle roof.
Steep slope roofing products are generally more visually appealing because they are critical aesthetic components for residential construction where the roof can consist of 40 of the exterior visual appearance of a.
Conventional slope roof range between 4 in 12 and 8 in 12.
Simply locate a roof rafter board place the end of the level against the bottom edge and measure from the 12 inch mark vertically to the bottom edge of the rafter.
For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.