Convert horizontal plan dimensions to sloping area, then estimate sheet or bundle equivalents.
In the app · English
Tools → Metal roofing
Tools → Roof shingles
For iPhone · iOS 18 or later
Free to download.
Estimate sloping area and the equivalent number of sheets by area. Confirm whole sheets, laps and layout with the supplier. For an initial material estimate on a simple roof with one pitch. With a symmetrical gable roof, use the full horizontal width to represent both slopes together.
Estimate sloping roof area and bundle equivalents from the coverage stated for your chosen shingles. For an initial material estimate on a simple roof with one pitch. With a symmetrical gable roof, use the full horizontal width to represent both slopes together.
Metal Roofing divides roof area by a sheet area. Roof Shingles divides it by the coverage of a bundle. Both use a single pitch angle and a selected allowance. Neither replaces a detailed laying plan.
Measure the horizontal footprint being covered, including any eaves you intend to include. Do not enter the sloping rafter length as the plan width and then apply pitch again. Roofs with different pitches need separate calculations.
Use your roof dimensions and the selected material’s coverage in Pro² for iPhone.
For iPhone · iOS 18 or later
Free to download.