Business Details
29 Years
experience
Trusted Heavy Highway and Site Development Solutions in Delaware
Diamond Materials was founded in 1997 in Wilmington, DE as a heavy highway and site development company. The Pierson family acquired the business in 2000, driving its evolution into a vertically integrated leader in the tri-state region. Our culture emphasizes work ethic, integrity, and employee growth, supported by advanced technology and machinery. We maintain rigorous safety, quality, and detail standards to deliver superior project outcomes. With over 400 employees, we operate across Delaware, New Jersey, Pennsylvania, and Maryland.Our capabilities span asphalt production, soil cement stabilization, utility construction, and marine services. We prioritize value engineering to optimize client costs while maintaining regulatory compliance. Our equipment fleet enables comprehensive site development from small repairs to large-scale projects. We expanded through strategic acquisitions, including Don Rogers, Inc. and Harrington Pit. Today, we remain committed to innovation and excellence in every project.
Services
Asphalt Paving
Demolition
Utility Construction
Soil Cement Stabilization
Milling
Marine Services
Cold In-Place Recycling
Clearing and Grubbing
On-Site Crushing
Concrete Curb Installation
Details
- Year established: 1997
Highlights and features
- We offer 21 years of experience in heavy highway construction.
- Our value engineering saves clients time and money.
- We provide full-service site development capabilities.
- Our team uses cutting-edge technology and equipment.
- We maintain strict safety and environmental compliance.
Services
Asphalt Paving
Our asphalt paving services cater to public and private sector projects, including roadways, parking lots, and industrial sites. We utilize modern paving equipment to ensure smooth, durable surfaces. Clients benefit from our expertise in both new construction and resurfacing projects.
Demolition
We perform selective and full structural demolition for buildings, bridges, and industrial facilities. Our specialized equipment and trained workforce ensure safe, efficient removal while adhering to strict safety protocols. Projects maintain schedule compliance and environmental standards.
Utility Construction
Our utility construction handles sewer, drainage, and water supply systems for residential, commercial, and industrial developments. We manage utility relocation and new installations with in-house resources, improving project control and efficiency for road and infrastructure contracts.
Soil Cement Stabilization
This process combines soil, cement, and water to strengthen subgrades and create stable work platforms. We reduce project delays by addressing poor soil conditions efficiently. Clients receive cost-effective solutions that maintain project timelines and structural integrity.
Milling
We provide milling services for road resurfacing projects across four states. Our equipment handles widths from 2 to 14 feet for precise material removal. Clients benefit from our rental milling machine options and experienced operators for efficient pavement restoration.
Questions
What construction services does Diamond Materials offer?
We provide asphalt paving, demolition, utility construction, soil stabilization, milling, marine services, and on-site crushing operations for infrastructure projects.
How long has Diamond Materials been in business?
Diamond Materials has operated since 1997, serving the Mid-Atlantic region with heavy highway and site development expertise.
What areas does Diamond Materials serve?
We serve Delaware, New Jersey, Pennsylvania, and Maryland with comprehensive construction and site development services.
Does Diamond Materials handle large-scale projects?
Yes, our equipment and workforce can manage projects of all sizes, from small repairs to major infrastructure developments.
How does Diamond Materials ensure project quality?
We use value engineering, advanced technology, and strict quality control processes to deliver durable, compliant infrastructure solutions.
