Patio Roof Slope Ratio

You can divide roofs into these categories.

Patio roof slope ratio.

Determine the minimum slope of the roof based on the roofing material. So in this example to find the fall you need to divide the distance run by 80. However this could differ depending on your project. In this example that means that the patio should fall 1 unit for every 80 units of distance.

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. Match roof material and use appropriate slope match the roofing on the covered porch with the main roof. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. A a roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch.

This is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares. Generally such roofs have a pitch ranging from 1 2 12 to 2 12. Flat roofs which aren t perfectly flat require a small slope to allow for water runoff. Roof pitch calculator results explained.

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