Each year, U.S. shingle manufacturers and roofers generate more than 11 million tons of asphalt shingle scrap, primarily removed from roof tops.
TxDOT, contractors, manufacturers, roofers and builders share a common interest in blending recycled asphalt shingles (RAS) into asphalt pavement created by:
In fact, this interest resulted in using RAS in the parking lot pavement at the new Dallas Cowboys stadium in Arlington.
You can estimate the potential savings of blending RAS into asphalt pavement using this worksheet.
Note: The worksheet is for informational purposes only. Actual savings will vary based on material costs.
TxDOT special provisions allow contractors to add up to five percent RAS to asphalt pavement:
Environmental, Health, and Safety
In February 2009, the Texas Commission on Environmental Quality (TCEQ) issued an Authorization Memo to allow hot mix plants to include either post-industrial or tear-off recycled asphalt shingles under the TCEQ Air Quality Standard Permit for Permanent Hot Mix Asphalt Plants.
There are several TCEQ regulations that may impact asphalt shingle processors:
Since asphalt roofing products may contain asbestos, The Texas Department of State Health Services (TDSHS) regulates asbestos-containing materials including roofing materials. For more information, consult the following:
Contractors certify to TxDOT that any reclaimed materials they use are not hazardous by following TxDOT's department materials specification DMS-11000. TxDOT approves Prequalified Suppliers of Nonhazardous Recycled Materials to supply certain nonhazardous recycled materials based on their history of satisfactory environmental testing and documented quality control plans.