Our Products

Drywall, insulation, steel, acoustical, tools and more for Mid-Atlantic builders

Quality Construction Supplies in DE, MD, NJ, OH, PA, VA, and D.C.

Capitol Building Supply, Inc. (CBSI), a member of the GMS family of companies, offers one of the largest selections of building products across the Mid-Atlantic region of the U.S. from our yards in:

Delaware
Dover | New Castle | Selbyville

Maryland
Baltimore (Quad Ave.) | Baltimore (Whitestone Rd.) | Beltsville | Bladensburg | Frederick | Gaithersburg | Hagerstown | Jessup | Upper Marlboro

New Jersey
Atlantic City | Camden | Elizabeth

Ohio
Cleveland | Stow

Pennsylvania
Harrisburg | King of Prussia | Meadowlands | Philadelphia | Pittsburgh

Virginia
Fredericksburg | Manassas Park | Marshall | Springfield | Vienna | Winchester

Washington, D.C.

From acoustical ceilings and exterior finishes, to wallboard, steel studs and tracks, safety products and more, Capitol Building Supply has all your commercial and residential construction projects covered.

Call or visit our yard locations to explore our huge inventory of quality building materials.

The Best Building Materials from the Best Brands

When Mid-Atlantic builders shop at CBSI for construction supplies, they find an amazing selection of quality building products from top brands like CertainTeed®, Knauf®, 3M™, ClarkDietrich®, National Gypsum®, Grabber® and more. Commercial and residential construction customers also find everything they need across a wide range of product categories like:

• Acoustical Ceilings
• Access Doors
• Air & Moisture Protection
• Caulking & Adhesives
• Drywall
• EIFS & Stucco
• Fasteners
• Firestop
• FRP
• Insulation
• Joint Treatment
• Lumber
• Safety
• Steel Studs & Tracks
• Surface Protection
• Tools

Your Local Building Materials Experts

Everything you need for your residential and commercial construction projects in DE, MD, NJ, OH, PA, VA, and D.C. is here. When you partner with Capitol Building Supply you’ll also find:

• Expert staff who are experienced problem solvers
• The widest selection of building products in your area
• Unmatched delivery capabilities
• Fast will-call turnaround / contactless pickup

With a unique combination of experience, inventory, exceptional service, and unequaled coverage across the Mid-Atlantic United States, CBSI gives construction customers a real advantage.

Building Supplies Delivered in DE, MD, NJ, OH, PA, VA, and D.C.

Capitol Building Supply, Inc. is dedicated to getting the right products into our customers’ hands, as quickly and safely as possible. We offer safe, on-time delivery, with full stock and scatter service for all the products we offer. Call or visit our yard locations today.