That being said on a 50sq hip roof with a 15 waste factor for waste real waste and starter shingles your looking at 7 5 squares.
Waste factor for gable roof.
The average waste factor for clay roof tiles is between 10 and 15 percent although this number may be higher.
Simple roofs gable 1 5.
I charge 10 15 20 waste factor but rarely go that high.
Roof waste calculation accurate roof waste calculator this download requires a 200 donation via paypal.
A gable roof s square footage is equal to that of a hip roof with the same dimensions.
From there the waste factor increases with every obstruction such as a chimney and with every hip or valley.
Same size roof now a hip roof at 7 5sq waste.
Other simple gable roofs will require cut shingles at the rakes.
Complex roofs 5 10.
If you re a roofing contractor and have worked with insurance claims you ve heard this before.
7 5 squares that s almost half a pallet or over 21 bundles.
Length of a shingle.
Unless it s cut to ribbons more than likely you ll have a lot of left over bundles at 15 waste factor.
10 for all gable roofs 15 for all hip roofs.
The amount of expected waste depends on the style and quality of the roof tile and on.
Divide total area by 100 this is the number of squares required.
The only roof that will generate no waste from cutting is that rare simple gable whose roof length is divisible by the 3 ft.
One pack of standard shingles covers 33 sq.
The difference is in the fewer amount of ridge capping you need and the amount you will waste will be less than that for a hip roof.
You also know how ridiculous this is.
If the roof isn t that cut up you may have a couple squares of waste.
Measure height from the bottom of the roofline to the ridge board.
Note that in the last 3 4 years costs of roof shingles and many accessories have gone down by an average of 18 20 currently the us national average for benchmark architectural shingles is around 74 51 square or 25 per bundle.
Measure the building length include the overhang multiply length by height for the area.