Roof Pitch/Slope Factor Chart
Professional Roofing Services in Corsicana, TX
At A-Z Roofing Solutions, we’re dedicated to helping our community through our wide range of roofing services. With our decade-long roofing expertise, quality workmanship, exceptional metal roofing repairs, and customer-oriented service, we provide solutions tailor-made to our customers’ roofing needs. This also includes helping them determine their home’s roof pitch as well as recommending the best materials for their roofing project.
Determining Your Roof’s Pitch
Our team is dedicated to helping our customers, one roof at a time. When it comes to roof installation or replacement, it’s crucial to learn your roof’s pitch and slope. Also known as the incline, the pitch is traditionally expressed as a ratio of X:12. It can sometimes be displayed as a fraction derived by dividing the rise by span. We’ll elaborate on this below.
| Roof Pitch | Slope Factor | Valley and Hip Factor |
| 1:12 | 1.0035 | 1.4167 |
| 2:12 | 1.0138 | 1.4240 |
| 3:12 | 1.01308 | 1.4362 |
| 4:12 | 1.0541 | 1.4530 |
| 5:12 | 1.0833 | 1.4743 |
| 6:12 | 1.1180 | 1.5000 |
| 7:12 | 1.1577 | 1.5298 |
| 8:12 | 1.2019 | 1.5635 |
| 9:12 | 1.2500 | 1.6008 |
| 10:12 | 1.3017 | 1.6415 |
| 11:12 | 1.3566 | 1.6853 |
| 12:12 | 1.4142 | 1.7320 |
Calculating the Pitch
You’ll need to measure the rise and run if you want to obtain an accurate pitch measurement of your roof. This is crucial as it will determine the amount of materials needed for your project. If you’re going through the manual route, you’ll need a tape measure, a spirit level, a pencil, and a paper to jot down your measurements and calculations.
Firstly, you should get the exact measurements of your roof’s rise and run. Get the roof’s rise by measuring the vertical height from the peak to the start of the structure wall. Next, you’ll need to get the run by measuring the horizontal distance between the peak and the wall. Once you get your measurements, you can proceed to calculate the pitch.
Calculating your roof’s pitch, you’ll need to divide the rise by the run to get its tangent. Next, multiply the result by 180/π to give your roof’s exact pitch.
How Can We Help You?
If you want to leave the roof pitch calculations to the professionals, our experts at A-Z Roofing Solutions are just a call away. You can reach us today at (888) 528-8998 to request a quote. We can help determine which materials are recommended for your roof pitch! You can also fill out our convenient online form to learn more about our roofing services.