Waste Factor For Gable Roof

Roof waste calculation accurate roof waste calculator this download requires a 200 donation via paypal.

Waste factor for gable roof.

From there the waste factor increases with every obstruction such as a chimney and with every hip or valley. One pack of standard shingles covers 33 sq. Waste factors simple roofs gable 1 5 complex roofs 5 10 measure height from the bottom of the roofline to the ridge board. Inches enter the exposed face of the board.

10 for all gable roofs 15 for all hip roofs. The sub total is 3977 70 x 1 08 4295 92 pitch has been added for 5 12 pitch. Enter the rise of the roof pitch rise 12 enter the length of the board. I charge 10 15 20 waste factor but rarely go that high.

The top row is a total of your roof area measurements with pitch added 5 for waste. 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. Amount of siding in lineal feet needed to cover the gable. Unless it s cut to ribbons more than likely you ll have a lot of left over bundles at 15 waste factor.

Waste is calculated at 7 5 for a gable roof and 15 for a hip roof which are typical in the roofing industry. 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. The 3977 70 is the total of your actual roof measurements. They expect this waste to include starter hip ridge the wasted layer under the valleys and scrap.

If you re a roofing contractor and have worked with insurance claims you ve heard this before. Would anyone believe the waste factor for the two roofs below could be the same. The waste is 4295 92 95 divisor 4522 02. Many adjusters that don t understand roofing want to apply 10 waste to gables roofs 15 to hip roofs with no consideration for the complexity of the roof.

You also know how ridiculous this is. For example consider a typical 50sq gable roof with 5sq of waste. Length of a shingle. Same size roof now a hip roof at 7 5sq waste.

If the roof isn t that cut up you may have a couple squares of waste. The square footage of your gable. A gable roof s square footage is equal to that of a hip roof with the same dimensions. Plan for waste factor the only roof that will generate no waste from cutting is that rare simple gable whose roof length is divisible by the 3 ft.