Waste Factor On A Hip Roof

This roof slope factor table also consists of hip and valley factors to measure the possible hips and valleys.

Waste factor on a hip roof.

The material type waste can be auto calculated for wood. Pitch of the roof rise in 12 waste factor in a percentage preset 10. Sure on an average job you can somewhat accurately predict a waste factor. The 3977 70 is the total of your actual roof measurements.

A 10 slope roof should not be confused with a 10 pitch roof as a 10 slope roof means that the roof rises by ten inches for every foot of run. Any roof not average the waste factor for hip and ridge will be off. The waste is 4295 92 95 divisor 4522 02. The top row is a total of your roof area measurements with pitch added 5 for waste.

This will give you the rise over run or pitch. Roof waste is automatically calculated based on seven factors. Number of sheets needed based on exact square footage of the roof. Better just to hmmmm measure the hip ridge and.

For example if you measure 4 inches the pitch of your roof is 4 12. The roof waste calculation tool takes the guesswork out of estimating sketched roofs and provides an accurate and consistent method for calculating the amount of roofing material required for waste. I ve been told that my hip roof would result in a whopping 30 waste factor with cedar shakes that three additional squares of shakes are needed above the amount required to cover the. Using a waste factor for starters and ridge is a bad idea.

That s 500 to 600 variance on the estimate. The sketched roof model. With a large roof it s off. A 7 5 variance of waste on a 30 square roof would be 2 33 squares.

Also show waste for valleys hips and or rakes and added to your squares. 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. Area of roof square feet. Viewed 885 times 1.

The sub total is 3977 70 x 1 08 4295 92 pitch has been added for 5 12 pitch. Ask question asked 3 years 7 months ago. The number of sheets the waste percentage will add. Simply locate a roof rafter board place the end of the level against the bottom edge and measure from the 12 inch mark vertically to the bottom edge of the rafter.

Note the word large wasn t included. That s because it is the smaller cut up hip roofs that can often have the highest waste percentage. Number of sheets needed including the waste. Waste is calculated at 7 5 for a gable roof and 15 for a hip roof which are typical in the roofing industry.

Calculating waste factor for hip roof w valley using cedar shakes.