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Warren Materials

Warren Materials has been a trusted member of The H&K Group Family of Companies since 1999.  Located in Stewartsville, NJ, the Warren Materials facility first began producing asphalt 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 to the surrounding region. We also are an approved recycling center for incoming recycled asphalt pavement or RAP.


Utilizing high quality raw aggregate and sand materials from our own facilities, Warren Materials 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 a wide variety of specialty and custom mix designs and our exceptional staff, plant layout and silo capacity all add up to provide the high level of service and quality our customers have come to expect.

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

Warren Materials
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 Materials
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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