Hip Roof Asphalt Shingles - Metric

This calculator helps you accurately estimate the number of ashphalt shingles needed for a hip roof, accounting for waste, starter strips, and ridge capping. By entering the building dimensions, eave overhang, roof pitch, and coverage per pack, you can determine the total number of shingle packs required for your project.

Note:

With all the different types of shingles available, not all packs are equal in the amount of pieces they contain, the length of the individual shingle and the square metre coverage per pack. Not all types of shingles can be used for the starter strip and the ridge capping needed, or you could use ridge caps to cover the top ridge and the hips. This calculator requires "the square metres one pack will cover," the results for starter strip and ridge capping are in the lineal metres needed for those two items and are not included in the "Total Packs Needed."

Calculator

1. enter the length of the building in metres
2. the width of the building in meters
3. the eave overhang in millimetres
4. the roof pitch in decimal degrees
5. enter the coverage area of one pack of shingles in square metres
6. a waste percentage to account for cutting and fitting

Results

1. the total area of the roof in square metres
2. the roof pitch as a ratio (e.g., 6 for a 6/12 pitch)
3. the slope of the roof expressed as a percentage
4. the length of the ridge line in lineal metres
5. the total length of the starter strip needed in lineal metres
6. the number of shingle packs required to cover the roof area
7. additional number of shingle packs needed to cover the waste factor
8. the total number of shingle packs needed, including waste

Results for starter strip and ridge capping are in the lineal metres needed for those two items and are not included in the "Total Packs Needed."