Patio Roof Slope Ratio

The minimum pitch for.

Patio roof slope ratio.

You can divide roofs into these categories. In this example that means that the patio should fall 1 unit for every 80 units of distance. Often you express roof pitch as the ratio between the rise and the run in the form of x 12. Pitch is thus the ratio of the rise in inches to a 12 inch run and is often expressed using a semicolon for example 6 12.

Flat roofs which aren t perfectly flat require a small slope to allow for water runoff. Generally such roofs have a pitch ranging from 1 2 12 to 2 12. Match roof material and use appropriate slope match the roofing on the covered porch with the main roof. A a roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch.

Slope the slope of a roof is represented as x 12 where x is the number of inches in rise for every 12 inches of run. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. This is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares. Roof pitch calculator results explained.

So in this example to find the fall you need to divide the distance run by 80. A roof slope of greater than 7 12 such as slopes between 8 12 to 12 12 is where the air dynamic issues start to arise requiring additional roof bracing to help mitigate the higher overall profile of the roof.