In 1997, the Dallas District of the Texas Department of Transportation (TxDOT) demonstrated separately using manufacturers' shingle scrap and tear-off shingle scrap in hot mix asphalt pavement. 

In 2004,  the Texas Commission on Environmental Quality (TxCEQ), issued an inter-office memo authorizing only manufacturers' shingle scrap in HMA under the TCEQ Air Quality Standard Permit for Hot Mix Asphalt Plants. 

In February 2009, TCEQ issued an inter-office authorization memo allowing recycled asphalt shingles (RAS) from either manufacturers shingle scrap or residential tear-offs in HMA under certain conditions.  That same month, TxDOT published special provisions for RAS in HMA.  

For more information, please contact Woody Raine, TxDOT Recycling Manager, at wraine@dot.state.tx.us .  Additional contacts are listed on the Texas State Contacts link below.

Texas State Contacts

TCEQ Intra-agency Memo Authorizing RAS in HMA (Letter)

TCEQ Air Quality Standard Permit for HMA Plants

Asphalt Roofing Shingles - TxDOT specifications, TCEQ authorization memo, prequalified suppliers and more