Asphalt roofing shingles have great recycling potential because
they are plentiful in the construction and demolition (C&D)
waste stream; they are generated separately from other wastes
and, hence, easy to isolate; recycling technology is available;
and the use of recycled shingles in pavement can yield cost
savings. However, shingle recyclers must deal with issues such
as potential asbestos content, differences in shingle properties
between manufacturing scrap and tear-off waste, pavement
engineering concerns, and equipment and collection needs.
Currently, almost all recycled asphalt shingles are used in
paving.