Question:
The oil in tear-off shingles is harder than the oils normally found in roadbeds.
Can we grind asphalt shingle, Class B tear-off material to use as a road base?
Answer:
There is a brochure that was created for theEPA in 1999, "From Roofs to Roads: Recycling Asphalt Roofing Shingles into Paving Materials," which does not mention "Class B," but says, "State-funded paving must meet state specs which are based on federal pavement performance standards and local climatic conditions and reflect engineering intended to maximize pavement durability. Paving projects not using state or federal funds, such as those controlled by either local authorities or private parties, are not required to meet state specs but often voluntarily follow the state specs rather than develop their own separate specs."