Getting accurate roof measurements can be difficult but with this roofing calculator, you’ll be well prepared to take measurements of any roof. Whether you’re a contractor looking to train a new employee or a homeowner looking to do some renovations, you’ll find this guide helpful for any roofing project. Use the step-by-step guide below to accurately measure your roof and estimate roofing costs.
- Prepare roof measurements and professional estimates from anywhere.
- Print email and share digital reports with property owners or with your team.
- Eliminate unnecessary trips to the job site.
- Spend less time on roofs and more time with customers face-to-face.
- Impress clients with new roof simulations, roof diagrams and other visuals.
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How to Measure Roof Slope from On the Roof
To use the direct roof slope measurement procedure, in addition to safe access to a roof that won’t be damaged by touching or walking on it, you need: a tape measure and a carpenter’s level. This procedure to measure roof slope can be performed on the roof or from a ladder at roof edge.
- Hold the carpenter’s level in a horizontal position with one end touching the roof surface.
- Measure out 12″ along the level bottom edge – the green line in our sketch. Mark this point on the leve.
- Measure straight down to the roof surface from the mark you just made – the blue line in our sketch.
- Read that distance in inches. The result is inches of rise per foot of run.
Metal roofing is typically sold by the sheet or panel. To determine the number of sheets or panels necessary to cover the roof, divide the width of the roof by the sheet or panel coverage width.
Shingles are typically sold in bundles. Depending on the type and brand of shingle, it may take a different number of bundles to make a square. When cost comparing shingles, remember to base price on squares and not on bundles.
Other Roofing Materials
The basic square footage and length calculations detailed above should help estimate overall cost for other materials. Additional roofing materials that should be accounted for include items such as leak barrier, deck protection, drip edge, rake edge, ridge vents, and hip and ridge caps.