Waste Factor On A Hip Roof

Any roof not average the waste factor for hip and ridge will be off.

Waste factor on a hip roof.

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. Note the word large wasn t included. Active 3 years 7 months ago.

Roof waste is automatically calculated based on seven factors. 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. Number of sheets needed including the waste. 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.

Calculating waste factor for hip roof w valley using cedar shakes. With a large roof it s off. Also show waste for valleys hips and or rakes and added to your squares. Pitch of the roof rise in 12 waste factor in a percentage preset 10.

A 7 5 variance of waste on a 30 square roof would be 2 33 squares. Viewed 885 times 1. The top row is a total of your roof area measurements with pitch added 5 for waste. Sure on an average job you can somewhat accurately predict a waste factor.

Better just to hmmmm measure the hip ridge and. This roof slope factor table also consists of hip and valley factors to measure the possible hips and valleys. 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. That s 500 to 600 variance on the estimate.

This will give you the rise over run or pitch. 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 based on exact square footage of the roof. Area of roof square feet.

The sketched roof model. The number of sheets the waste percentage will add. The 3977 70 is the total of your actual roof measurements. The waste is 4295 92 95 divisor 4522 02.

That s because it is the smaller cut up hip roofs that can often have the highest waste percentage. Using a waste factor for starters and ridge is a bad idea. The material type waste can be auto calculated for wood. 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.