# Roof pitch angles

**Several sorts of roofs and their roof pitches**

*Roof pitch is nothing but the slope fashioned by the rafter. It is assessable in a couple of ways. They are either in the form of the angle that the rafter created with the flat or the percentage among the rise as well as the run of a roof. Frequently, Roof pitch is stated as a relative amount among “rise” as well as “run” as x: 12. *

As an instance, a pitch of 1:12 implies that for every twelve yards of the length of the building the rise is going to the same as one yard.

Roofs can be divided into a number of categories. We discuss them below.

Flat roofs – these aren’t completely flat and require a bit of slope for helping in water runoff. Generally, such roofs are characterized by **Roof pitch angles** that correspond to the pitch slope of between 1/2:12 and 2:12.

Low pitched ones are characterized by a pitch of less than 4:12. These are usually not easy in terms of maintenance since they have need of special materials for avoiding leaks.

Conventional roofs are characterized by a pitch between 4:12 and 9:12. They happen to be the simplest to build and they are secure to stroll on.

A High-pitched roof often requires more fasteners. They are characterized by **Roof pitch angles **that correspond to the roof pitch slopes that could go up to 21:12.

**The way of calculating a roof pitch**

Usually, the calculation of a roof pitch is done from the identical method that explains a right triangle. You are able to make use of some equations for finding the rafter’s length as well as the slope. The equations are:

rafter² = rise² + run² (this is taken from “Pythagorean theorem”)

Rise/run = pitch, here pitch is stated as a percentage

Pitch = tan (angle), where the angle is “roof pitch” stated as** degrees**.

If you’re keen on finding a roof pitch as x:12 you must just compute the pitch and replace 12 with the run length. The number that is exhibited as the rise is going to be your x.

You also have the option of using the Roof slope calculator for the calculation of the roof pitch. You will find several **examples online** on the way of using a Roof slope calculator.