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.
Waste factor for gable roof.
I ve had a few adjusters on really cut up roofs with 3 tabs were they won t pay for ridge cap allow a 20 waste factor.
Measure the building length include the overhang multiply length by height for the area.
Simple roofs gable 1 5.
10 for all gable roofs 15 for all hip roofs.
Complex roofs 5 10.
7 5 squares that s almost half a pallet or over 21 bundles.
A gable roof s square footage is equal to that of a hip roof with the same dimensions.
Other simple gable roofs will require cut shingles at the rakes.
Unless it s cut to ribbons more than likely you ll have a lot of left over bundles at 15 waste factor.
I charge 10 15 20 waste factor but rarely go that high.
You also know how ridiculous this is.
The amount of expected waste depends on the style and quality of the roof tile and on.
Roof waste calculation accurate roof waste calculator this download requires a 200 donation via paypal.
Length of a shingle.
From there the waste factor increases with every obstruction such as a chimney and with every hip or valley.
If you re a roofing contractor and have worked with insurance claims you ve heard this before.
The average waste factor for clay roof tiles is between 10 and 15 percent although this number may be higher.
Measure height from the bottom of the roofline to the ridge board.
The only roof that will generate no waste from cutting is that rare simple gable whose roof length is divisible by the 3 ft.
Divide total area by 100 this is the number of squares required.
Waste is calculated at 7 5 for a gable roof and 15 for a hip roof which are typical in the roofing industry.
One pack of standard shingles covers 33 sq.
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.
For example consider a typical 50sq gable roof with 5sq of waste.