2 12 Roof Grafe

Asphalt shingles continue to be the most widely installed roof covering option in north america.

2 12 roof grafe.

There are some standing seam metal roofing options available from atas and other manufacturers that can be installed on a roof with pitch of 1 12. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. 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. 3 12 1 2 12 and 1 4 12.

Roof pitch degree table. Roof pitch in layman s language simply refers to the steepness of the roof. If this isn t practical then perform the same measurement on the underside of the roof. Rafter span tables use these tables to determine lengths sizes and spacing of rafters based on a variety of factors such as species load grade spacing and pitch.

Visit the roof framing page for more information on cutting roof rafters and visit the roof pitch calculator for determining rafter lengths based on rise and run. A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance. Roof slope definitions measurement methods. The table below shows common roof pitches and the equivalent grade.

So you would need to pick the right option as most regular standing seam metal roofs will require a roof pitch of 2 12 or even 3 12 at a minimum. Put them together as rise in run. We give the required roof slopes for different types of roofing materials and we illustrate several methods by which the slope or pitch of a roof is easily measured. 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.

Divide the percentage number by 100. Find the arctangent of. 0 7 x 12 8 4. Multiply the tangent by the run which is 12 since we re doing this in inches.

Giving you a slope of 8 4 in 12 or. We included a roof pitch chart below the 7 12 example image and the calculator below that. Image 1 12 to 12 12 roof pitch 7 12 pitch. 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.

The pitch of a roof is arrived at by dividing the vertical rise and its horizontal span or what people in the roofing industry would refer to as the slope. For a slope of 35 tan 35 0 700. That gives you the rise. The most common slopes are.

8 2 5 inches in 12. Simply put it s a shallow roof. Most roof s have a pitch in the 4 12 to 9 12 range. Common roof pitches and equivalent grade degree and radian angles.