Waste Factor On A Hip Roof

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.

Waste factor on a hip roof.

Calculating waste factor for hip roof w valley using cedar shakes. The number of sheets the waste percentage will add. Using a waste factor for starters and ridge is a bad idea. Better just to hmmmm measure the hip ridge and.

With a large roof it s off. This roof slope factor table also consists of hip and valley factors to measure the possible hips and valleys. 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. For example if you measure 4 inches the pitch of your roof is 4 12.

The material type waste can be auto calculated for wood. The waste is 4295 92 95 divisor 4522 02. Note the word large wasn t included. Area of roof square feet.

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. A 7 5 variance of waste on a 30 square roof would be 2 33 squares. That s 500 to 600 variance on the estimate. Any roof not average the waste factor for hip and ridge will be off.

Sure on an average job you can somewhat accurately predict a waste factor. With a cut up job that waste factor for hip and starter is off. The sketched roof model. Active 3 years 7 months ago.

Pitch of the roof rise in 12 waste factor in a percentage preset 10. Ask question asked 3 years 7 months ago. Multi level complex roofs are difficult to estimate. Roof waste is automatically calculated based on seven factors.

Waste is calculated at 7 5 for a gable roof and 15 for a hip roof which are typical in the roofing industry. Number of sheets needed including the waste. The top row is a total of your roof area measurements with pitch added 5 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.

Viewed 885 times 1. The sub total is 3977 70 x 1 08 4295 92 pitch has been added for 5 12 pitch. That s because it is the smaller cut up hip roofs that can often have the highest waste percentage. This will give you the rise over run or pitch.

The 3977 70 is the total of your actual roof measurements.