4 12 Pitch Roof Area

Rafter length on a 12 12 pitch is 16 97 inches per foot of house width 6 12 is 13 4.

4 12 pitch roof area. A higher pitch will cost more for framing trim sheathing roofing and labor. For example a 4 12 pitch roof that is 100 square feet. The pitch of the roof is the rise over a 12 inch run. A roof pitch of 4 in 12 4 12 has a rise of 4 and a run of 12.

Most roof s have a pitch in the 4 12 to 9 12 range. For example if you measure 4 inches the pitch of your roof is 4 12. Roof pitch degree table. A 4 12 is a roof slope that rises by 4 inches for every 12 inches across.

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. In the us the slope of the roof is typically expressed as a ratio rise in run or rise run which by general agreement in the us roofing industry always uses 12 inches as the run and states how many inches the roof rises vertically for every 12 inches the roof goes across horizontally sloped roofs commonly have slopes like 6 in 12 6 12 or 8 12. If this distance measures 4 inches you have a 4 in 12 pitch. Image 1 12 to 12 12 roof pitch 7 12 pitch.

On a ladder beside the roof place the level a foot or so up the roof hold it level and measure from the 12 inch mark on the level s bottom straight down to the roof. Hardly makes sense to build a high pitched roof if you aren t utilizing the space. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. 8 inches and you have an 8 in 12 pitch.

This will give you the rise over run or pitch. Outside of the u s a degree angle is typically used. We included a roof pitch chart below the 7 12 example image and the calculator below that. This forms an angle of 18 5 between the horizontal section and the roof and creates a gentle incline that is seen as a midpoint between a low pitch and medium pitch roof.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. 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. Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used. Use our roof pitch calculator to find the pitch of your roof.

Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area.