York Materials Group is a leading asphalt manufacturer in south central Pennsylvania, with a well-earned reputation for providing our customers with personal service and quality materials. Our plants are PennDOT-certified and each plant has a PennDOT-certified technician providing on-site testing daily. Additionally, all of our plant locations feature batch-loading, and delivery service is available upon request. With four centrally-located plants and an extensive trucking fleet, York Materials Group has the flexibility to efficiently accommodate your project demands. Our in-house labs perform testing on our materials as-needed, for certain special applications and to check gradations, specific gravities, etc. Weekend/nighttime hours are available upon request (start-up costs may apply).