Few regions are as closely tied to building materials as the Lehigh Valley. The area's rich limestone deposits gave rise to the American portland cement industry in the late nineteenth century, and for decades the Lehigh Valley cement belt produced a large share of the nation's cement. Many of the bridges, skyscrapers, and dams built in that era relied on concrete from the region.
Today, Allentown's construction market is fueled by new warehouses, housing developments, healthcare expansions, and downtown revitalization. This guide reviews ten building material companies trusted by contractors and homeowners across the Lehigh Valley.
The Lehigh Valley's Building Materials Heritage
The cement industry shaped towns like Coplay, Northampton, and Nazareth, and several cement plants still operate in the region today. This heritage means local contractors have access to nearby cement, aggregates, and ready-mix concrete, reducing transportation costs and supporting faster project schedules.
Trends in Construction Materials
Lower-carbon cement, recycled aggregates, and energy-efficient building envelopes are reshaping the industry. Builders increasingly use engineered lumber, advanced insulation, and durable roofing and siding products that reduce maintenance. Supply chain volatility in recent years has also pushed contractors to build stronger relationships with reliable regional suppliers.
Why Supplier Choice Matters
The right building materials partner provides more than products. It offers accurate takeoffs, timely jobsite delivery, technical guidance, and credit terms that help contractors manage cash flow. For homeowners, knowledgeable staff can recommend products suited to Pennsylvania's freeze-thaw climate.
Our Picks: The 10 Best Building Material Companies in Allentown
1. Heidelberg Materials
Heidelberg Materials, formerly known in the region as Lehigh Hanson, carries a name directly connected to the Lehigh Valley's cement history. The company supplies cement, aggregates, and ready-mix concrete and is investing in low-carbon cement technology.
2. Buzzi Unicem USA
Headquartered in Bethlehem, Buzzi Unicem USA is a major cement producer operating plants across the country, including in the Lehigh Valley. Its products support infrastructure, commercial, and residential construction throughout the Northeast.
3. Keystone Cement
Keystone Cement operates a cement plant in Bath, Pennsylvania, continuing the region's long cement-making tradition. Its local production provides contractors with dependable supply for concrete projects across the Lehigh Valley.
4. CertainTeed
Headquartered in Malvern, Pennsylvania, CertainTeed manufactures roofing, siding, insulation, gypsum, and ceilings. Its broad product line makes it a one-stop source for residential and commercial builders seeking quality and energy efficiency.
5. Armstrong World Industries
Based in Lancaster, Armstrong World Industries is a leader in ceiling and wall solutions for commercial interiors. Its acoustic and sustainable products are widely specified in Lehigh Valley offices, schools, and hospitals.
6. 84 Lumber
84 Lumber, founded in Pennsylvania, is one of the largest privately held building materials suppliers in the country. It provides lumber, trusses, windows, doors, and installation services to builders and remodelers.
7. Allan Myers
Allan Myers is a Pennsylvania-based construction and materials company producing aggregates, asphalt, and concrete. Its quarries and plants support road building and large infrastructure projects across the region.
8. ABC Supply
ABC Supply is the largest wholesale distributor of roofing in the United States and also supplies siding, windows, and gutters. Allentown contractors value its knowledgeable branch staff and reliable deliveries.
9. The Home Depot Pro
The Home Depot's professional division serves contractors with bulk pricing, jobsite delivery, and dedicated account support. Its Allentown-area stores make it convenient for both professionals and homeowners.
10. Lowe's Pro
Lowe's Pro offers contractors volume discounts, loyalty rewards, and special order capabilities. Its local stores provide easy access to a wide selection of building materials and tools.
How to Choose a Building Material Supplier
Compare suppliers on product availability, pricing, delivery speed, and the expertise of their staff. Contractors should evaluate credit terms, online ordering, and jobsite delivery capabilities. Ask about product warranties, sustainability certifications, and how suppliers handle backorders. Strong relationships with local suppliers often lead to better service during busy seasons.
Frequently Asked Questions
Why was the Lehigh Valley called the cement capital?
The region's limestone deposits allowed early American portland cement production to flourish here, and by the early twentieth century the Lehigh Valley produced a major share of the nation's cement.
What building materials work best for Pennsylvania's climate?
Materials rated for freeze-thaw cycles, high-performance insulation, impact-resistant roofing, and moisture-resistant siding perform best in the region's variable weather.
Should homeowners buy materials directly or through a contractor?
Contractors often receive trade pricing and know exactly which products and quantities a project needs, but homeowners handling smaller projects can benefit from the expert advice and wide selection available at local supply yards and home improvement stores.
What is low-carbon cement?
Low-carbon cement replaces part of the traditional clinker with alternative materials such as limestone or supplementary cementitious materials, reducing carbon emissions while maintaining strength for most construction applications.
Final Thoughts
Allentown's building materials sector combines a proud industrial heritage with modern innovation. The companies above help contractors and homeowners build stronger, more efficient, and longer-lasting structures across the Lehigh Valley.