Enter the span of the roof, the roof pitch angle, and the overhang length into the calculator to determine the roof panel length. This calculator can also evaluate any of the variables given the others are known.

Roof Panel Length Formula

L = (S / cos(a)) + O

The following formula is used to calculate the roof panel length. Variables:

  • L is the length of the roof panel

  • S is the span of the roof

  • a is the roof pitch angle

  • O is the overhang length

To calculate the roof panel length, divide the span of the roof by the cosine of the roof pitch angle. Then, add the overhang length to the result.

What is a Roof Panel Length?

A roof panel length refers to the measurement of a roofing panel from one end to the other. This length can vary depending on the design and structure of the building. It is a crucial factor in the installation process as it determines how many panels will be needed to cover the entire roof. The length of the roof panel should be accurately measured to ensure a proper fit and to avoid unnecessary wastage of materials.

How to Calculate Roof Panel Length?

The following steps outline how to calculate the Roof Panel Length.

  1. First, determine the span of the roof (S).
  2. Next, determine the roof pitch angle (?).
  3. Next, determine the overhang length (O).
  4. Next, calculate the cosine of the roof pitch angle (cos(?)).
  5. Finally, calculate the Roof Panel Length (L) using the formula: L = (S / cos(?)) + O.

Example Problem:

Use the following variables as an example problem to test your knowledge.

Span of the roof (S) = 10 ft

Roof pitch angle (degrees) = 30 degrees

Overhang length (O) = 2 ft