Roof Pitch Vs Slope

Understanding your roof s pitch and slope.

Roof pitch vs slope.

The roof s pitch is its vertical rise divided by its horizontal span or run what is called slope in geometry and stair construction. 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. Or the colon can replace the slash as in 2 12 or 7 12. If you want to convert from degrees to the american ratio then simply find the tangent of the angle.

What is the pitch of a 30 degree roof. Using the illustration above and information we just learned about slope and pitch we can see that a 2 12 slope can be expressed as 1 12 pitch assuming the span is twice the length of the run. Yes 7 12 a pitch of a 30 degree roof is roughly the same as a 7 12 roof pitch. Pitch is a fraction expression of the rise to the span.

For example a roof with a pitch. Sometimes pitch is also expressed in. Roof pitch is a term describing how steep or flat your roof slope is. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof.

Slope is a ratio of the rise inches to the span per foot in inches. The minimum roof pitch for shedding snow is around 30 or a 6 12 or 7 12 slope although this is not a definite as the material of your roof the direction of the snow and wind are some factors that can affect whether or not snow will slide as roofs of as little as 10 have been reported to shed snow. The pitch of the roof pertains more to the actual construction of the house whereas the slope is more relevant to the roofing of your house. A roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch.

A roof that rises 4 inches for every 1 foot or 12 inches of run is said to have a 4 in 12 slope. Pitch is the term used to describe the angle slope or slant of your roof. Knowing the difference between a steep pitch a low pitch or somewhere in between is something you want to be comfortably informed about when considering roofing changes. If the rise is 6 inches for every 12 inches of run then the roof slope is 6 in 12 the slope can be expressed numerically as a ratio.

If the pitch is 1 3 the slope is 8 12. The gentle slope of a 4 12 roof pitch falls on the cusp between moderate pitch and low pitch. The slope ratio represents a certain amount of vertical rise for every 12 inches of horizontal run. However as far as roof construction.

Roof pitch defined and explained. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12. Roof pitch designations are comprised of two numbers indicating a ratio.

The combination of two numbers are used to display or show the roof pitch.