Presidential Shake

We manage quite a few contractors that have been submitting pay apps for presidential shake ranging from 5% to 18% waste for roofs that are almost identical.  I was wondering what everybody else was seeing with their waste factors when installing presidential shingles.

The complexity of the roof design, the contractor's level of expertise, the effectiveness of material utilization and the overall project management are some of the variables that commonly affect waste in roofing projects. The amount of waste might differ dramatically between projects.

Seems to be the norm following a storm.....Lot's of good shingles in the landfill & bundles stacked in driveways.....

We just did a 45sq multi-hip house with Presidentials. Unfortunately I just went off the insurance's eagleview so I can't comment on our exact waste usage. I have 6sq sitting at my shop now :(

We used open metal valleys which you should consider when figuring waste. We generally come out less than what the job figures with waste on an architectural shingle, I think we are rather efficient.

"Waste" is a definitive/calculative endeavor....On the other hand, "waste" can also refer to inefficiency, carelessness, lack of knowledge/ability....The later of which is the varying aspect. What I have noticed in the residential/non-state contractor licensing, "subcontracting" labor arena - The waste is incredibly rampant.