What is Roof Pitch?
Before delving into the methods of finding roof pitch, let's clarify what it actually means. Roof pitch, also known as roof slope, refers to the angle or steepness of a roof. It's typically represented as a ratio, indicating the vertical rise in inches for every 12 inches of horizontal run. For instance, a pitch of 6:12 means the roof rises 6 inches vertically for every 12 inches horizontally.
Method 1: The Basic Approach
One of the simplest methods to find the pitch of a roof involves a ladder, a measuring tape, and a helper for safety. Here's how to do it:
Position the ladder: Place the ladder securely against the side of the house, ensuring it's stable and extends past the eaves for safety.
Measure the run: Climb the ladder and measure the horizontal distance (run) from the exterior wall to the point where the roof meets it.
Measure the rise: Using a long level or a straight board, extend it horizontally from the point where the roof meets the wall. Measure vertically from the end of this board to the roof's peak. This measurement represents the rise.
Calculate the pitch: Once you have both the run and the rise, plug the values into the pitch formula: pitch = rise ÷ run. This will give you the pitch ratio.
Method 2: The Inside-Out Method
If climbing ladders isn't your cup of tea or if the roof is inaccessible, you can still determine the pitch from inside your attic. Here's how:
Locate a rafter: Find a roof rafter within your attic that's easily accessible and preferably not obscured by insulation.
Measure the rise: Using a measuring tape, measure the vertical distance from the bottom of the rafter to the point where it meets the ridge board or peak of the roof. This measurement represents the rise.
Measure the run: Measure the horizontal distance from the bottom of the rafter to the point where it intersects with the exterior wall. This measurement is your run.
Calculate the pitch: Just like in the previous method, plug the rise and run values into the pitch formula: pitch = rise ÷ run.
Knowing how to find the pitch of a roof is essential for various reasons, from estimating materials to ensuring proper drainage and ventilation. By following these straightforward methods, you can confidently determine the pitch of any roof, empowering yourself for your next roofing project or aiding in discussions with roofing professionals. So, grab your measuring tape and get ready to decode the mystery of roof pitches!
