Patio Roof Slope Ratio

Typically you can use the industry standard ratio for fall of 1 80.

Patio roof slope ratio.

Match roof material and use appropriate slope match the roofing on the covered porch with the main roof. However this could differ depending on your project. The minimum pitch for. Roof pitch calculator results explained.

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. Determine the minimum slope of the roof based on the roofing material. Flat roofs which aren t perfectly flat require a small slope to allow for water runoff. 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.

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. This is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares. A a roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch. Often you express roof pitch as the ratio between the rise and the run in the form of x 12.

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. In this example that means that the patio should fall 1 unit for every 80 units of distance.