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Baltimore, Maryland (Quad Ave)

Drywall, Acoustical Tiles, Insulation and Steel

Capitol Building Supply, Inc. – Baltimore’s Construction Products Leader

Capitol Building Supply, Inc. (CBSI) is a GMS company that serves both commercial and residential construction sites. Whether you need large quantities or just a few products for your project, our building supply yards in Maryland, Delaware, New Jersey, Pennsylvania, Virginia, and the Washington, D.C. area have everything you need.

With best-brand products from the industry’s top manufacturers, our quality construction materials at our Quad Avenue yard in Baltimore, MD include:

Your Quad Avenue Source for Wallboard in Baltimore

At Capitol Building Supply, Inc., we provide a complete inventory of drywall products and tools for types I-V, residential and commercial construction applications. If you're looking for sheetrock for Baltimore construction jobs, our Quad Avenue yard stocks a complete inventory of gypsum wallboard and sheetrock products and accessories. Our supply of drywall includes non-paper faced, lightweight, impact resistant, fire-rated, and moisture and mold resistant wallboard. In addition, we supply glass mat panels, tile backer and specialty wallboard products. CBSI carries drywall from leaders like CertainTeed®, Continental™, Georgia-Pacific®, National Gypsum®, PABCO®, QuietRock®, and USG™

Baltimore Steel Framing and Accessories

Need a steel supplier in Baltimore? CBSI’s Quad Avenue yard location offers the largest in-stock inventories of steel framing, steel studs, track systems, and steel accessories in the business. Additionally, we offer inclusive manufacturer support for all of our products so you can have full confidence in what you buy from Capitol Building Supply, Inc. We get our steel from suppliers including MarinoWare®, ClarkDietrich®, Telling®, Phillips and SteelCon. If you need steel framing materials for erecting new buildings or steel studs to attach plasterboard, our Quad Avenue Baltimore yard has all your steel needs covered.

Baltimore’s Top Ceiling Tile Selection – CBSI Quad Avenue

Whether you're looking for exceptional soundproofing solutions or simply a creative style, come by our Quad Ave. Baltimore yard to browse our selection of acoustical tiles. CBSI carries tiles from Tectum, and specialty acoustical lines from Armstrong® including Ekos, Infusions, MetalWorks, SoundScapes, SoundSoak and WoodWorks. If you need a great way to not only soundproof your space but to boost its aesthetic value, swing by our Baltimore yard on Quad Avenue to speak to one of our professionals about our acoustical ceiling tile products. You can be sure we'll deliver a beautiful finish to your ceilings.

The Best Insulation for the Baltimore Area

Capitol Building Supply, Inc. is one of Baltimore’s top providers of insulation supplies for commercial and residential building projects. It doesn't matter if you are working on a big commercial undertaking or a small residential home, CBSI’s Quad Avenue Baltimore yard has the insulation to get the job finished right. We inventory insulation supplies for both interior and exterior applications including batt insulation, rigid foam board insulation, loose-fill and blown-in insulation, semi-rigid fiberglass panels, and spray foam. Our products come from quality labels like CertainTeed®, Knauf®, Rockwool®, and Dow® so you can know for sure you're buying the best.

Builders in Baltimore, MD – Trust CBSI

Our staff of experts bring decades of combined experience in the construction industry to help our customers find the exact products they need.

Let Capitol Building Supply on Quad Avenue in Baltimore be your number one resource for building materials. Our yards across MD, DE, NJ, PA, VA, and D.C. offer a large in-stock selection of products that are ready for immediate pickup. We also offer delivery to your jobsite, on time, with full stock and scatter service.

Capitol Building Supply – Baltimore, MD (Quad Ave)
6813 Quad Avenue
Baltimore, MD 21237
Phone: 410-284-2800
Fax: 410-284-2899
Hours of Operation
Monday-Friday: 6:00am-4:00pm
Saturday: 7:00am-12:00pm

Need to talk to an expert to help with your next project?

Experienced and helpful customer service representatives are standing by ready to help.
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About Us

Teaming up with the top brands in the industry, we have one simple pledge: to get the right products into our customers' hands as quickly and safely as possible.

Our Services

Capitol Building Supply carries a full range of commercial and residential construction supplies, and our crews are fully trained to deliver to all sites.

Our Locations

Our delivery fleet is dispatched from 20 locations including three yards in Delaware (Dover, New Castle, Selbyville), seven yards in Maryland (Baltimore, Beltsville, Bladensburg, Frederick, Gaithersburg, Hagerstown, Upper Marlboro), two yards in New Jersey (Atlantic City, Camden), one yard in Pennsylvania (Harrisburg), six yards in Virginia (Manassas, Marshall, Springfield, Stafford, Vienna, Winchester), and one yard in Washington, D.C.

Contact Us

For more information about how to contact us, visit our Find a Yard page. Or, click the Contact Us tab to send us an email.