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Warren Asphalt (formerly Warren Materials) has been a trusted member of H&K Group, Inc.’s (H&K’s) construction materials team since 1999.  Located in Stewartsville, NJ, the Warren Asphalt facility location first began producing asphalt in 1952. Though steeped in tradition, our new state-of-the-art asphalt plant utilizes this key Warren County, NJ location to provide our civil construction and infrastructure customers with the high-quality asphalt products they have come to expect from Warren Materials. 

Conveniently located just off Route 78 on Route 57 in Warren County, NJ, we offer both NJ and PA approved asphalt and aggregate products betway casino rewardsto the surrounding region. We are also an approved recycling center for incoming recycled asphalt pavement, or RAP.


Utilizing high quality raw aggregate and sand materials from H&K’s own facilities, Warren Asphalt produces a wide variety of asphalt mixes, including standard Marshall and SUPERPAVE designs that are New Jersey and Pennsylvania Departments of Transportation (NJDOT and PennDOT) certified. We also produce specialty and custom mix designs, and our exceptional staff, combined with our plant layout and silo capacity, all add up to provide the high level of service and quality our customers have come to expect.


Warren Asphalt is pleased to announce that we also carry QPR No. 754 and No. 756 Green Patch high performance cold patch products.

The knowledgeable staff at Warren Asphalt is ready and pleased to assist you. If you have any questions regarding products, directions, delivery, or any other general inquiries, please contact the Asphalt Plant.

Warren Asphalt
703 Route 57
Stewartsville, NJ 08886
United States
Quarry Phone: 908-859-3333
Asphalt Phone: 908-859-8973
Quarry Fax: 908-859-3336
Asphalt Fax: 908-859-6611
Warren Asphalt
P.O. Box 196
Skippack, PA 19474
United States

HOURS: M-F 7AM to 3PM (Hours/Days are flexible, please call to schedule outside of these times)

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