Recycling once was uncommon in the roofing industry. Now it is increasing as an ecofriendly and economically wise method to dispose of and reuse material from old concrete and asphalt-shingled roofs.
Traditionally, the industry's "green practice" involved overlaying an existing roof with another layer of shingles, but this method only delayed the inevitable disposal. These days, many roofing professionals have shingle material ground up for reuse rather than sending it to landfills. This material can be used to improve the quality of roadway pavement.