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## A Fundamental Explanation of Roof Pitches

Roof pitch is an important term in the roofing industry. This is an important factor in choosing the right roofing material for your home. If you need to replace your roof, you should familiarize yourself with this term. Having a complete understanding of your roofing system will help you make better buying decisions and even inspire you to stay on track with routine maintenance. Keep reading to learn more about roof pitches.

**Definition**

Roof pitch simply refers to the pitch, angle, and pitch of your roof. The slope of a roof is represented either by two numbers divided by a slash, or by a ratio with two points between two numbers. The first number is the numerator and the second is the denominator. Each number represents a specific measurement of a roof’s pitch. The numerator represents the vertical height of a roof’s pitch, while the dominant represents the horizontal length of a roof’s pitch.

These numerical values vary greatly depending on the construction and architecture of a house or property. There are flat roof systems with little or no slope, as well as low-slope roof systems and high-slope roof systems. On average, most systems range in height from 4/12 to 8/12. Flat systems may have extremely low values, such as ¼ over 12, while other treble systems may have a value of 12/12 and drop to a perfect 45 degree angle.

**do the math**

The math can be tricky since the number 12 is the common numerical value used for the slope denominators. Even though 12:12 can be reduced to 1:1, the number 12 is still used for roof pitch purposes. To read a roof pitch value, you must start with the top number (numerator) and end with the bottom number (denominator).

**Here are some examples:**

2:12 or 2/12 = For every 12 horizontal feet, the roof drops 2 feet.

5:12 or 5/12 = For every 12 horizontal feet, it drops 5 feet.

8:12 or 8/12 = For every 12 horizontal feet it drops 8 feet.

* **Side note: *You can also say that for every 12 horizontal feet it

*MOUNTED*Two feet. It’s the same thing anyway.

**Low versus high**

__Low-pitched roofs__ – Homes built in the 1960s are known for building low-pitched roofs. They were built with very little slope, just enough for good water flow. Because these roofs have a slope of about 1:12, they actually appear flat.

__steeply pitched roofs__ – Examples of steeply pitched roofing systems would be the Victorian era of construction. Often these roofs were significantly pitched and steep. Church steeples are another good example of a steeply pitched roof.

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