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Building Materials
At Dartmouth Building Supply, we know that every great project starts with the right materials. That’s why we offer a full range of building essentials to support everything from residential remodels to large commercial builds. Whether you need high-quality lumber, wood, and paneling, durable drywall and steel framing, long-lasting decking, or reliable roofing and siding, DBS has you covered.
With trusted brands, competitive pricing, and a team that understands the demands of the jobsite, we make it easy for contractors and homeowners alike to get the materials they need to build strong, beautiful, and lasting results.
Lumber, Engineered Wood, & Panels
Drywall, Steel Framing & Installation
Decking, Porches & Railing Materials
Roofing & Siding
Molding & Millwork
Lumber, Engineered Wood & Panels
At Dartmouth Building Supply, we know that the quality of your materials determines the strength and longevity of your project. That’s why we stock a wide selection of premium lumber, engineered wood products, and panels trusted by builders and homeowners across New England. Whether you’re framing a large multifamily project or tackling a custom renovation, DBS provides the products, expertise, and service to keep your job on track.
Our inventory includes dimensional lumber in multiple sizes and lengths, pressure-treated and fire-retardant options for safety, and specialty woods that add value and beauty to your build. To protect quality, all of our lumber is stored under cover — ensuring every piece arrives at your site in top condition. From posts and boards to plywood and sheathing, we make it simple to find everything you need in one place.
DBS also offers a full line of engineered wood solutions designed to increase structural performance and reduce jobsite waste. Products such as Nordic I-Joists, TRIFORCE® Open Joists, and Anthony Power Beams give contractors, architects, and designers the flexibility to build smarter without the limitations of traditional framing. These solutions not only save time and labor but also help prevent costly callbacks by improving accuracy and efficiency.
No matter the scope of your project, our team provides accurate takeoffs, quick turnaround on special orders, and reliable delivery directly to your jobsite — exactly when and where you need it. Backed by partnerships with trusted manufacturers, DBS helps you maximize productivity, protect your margins, and deliver lasting results.
Drywall, Steel Framing & Insulation
At Dartmouth Building Supply, we understand that drywall and framing are the backbone of every interior project. From small residential rooms to large commercial buildings, DBS provides the drywall, metal framing, and insulation materials contractors trust for strength, durability, and performance. Our roots go back to founder Joe Delgado’s work as a drywall contractor, and today we carry that same expertise forward as the region’s supplier of choice.
Our inventory includes a wide range of drywall dimensions and thicknesses, along with specialty options such as fire-rated boards, moisture- and mold-resistant panels, fiberglass-matted gypsum, abuse- and impact-resistant boards, tile backer boards, and shaft wall liners. For projects that require additional strength, we stock high-quality metal studs and tracks in multiple widths, lengths, and gauges — with custom options available to meet unique job requirements.
DBS also offers everything you need for professional-grade installation, from ready-mix compounds and setting compounds to tapes, primers, fasteners, and specialty tools. Our delivery service makes it easy to get materials exactly where you need them, when you need them. With expert boom truck operators able to place drywall and framing products up to six stories high, we help maximize efficiency and reduce heavy lifting on the jobsite.
By combining responsive service with a full line of insulation options — including fiberglass, mineral wool, rigid foam, polyiso boards, and acoustical ceiling products — DBS ensures you’ll have the right materials to complete every project with precision. With quality products, reliable availability, and competitive pricing, we’re here to keep your jobs moving forward without delays.
Porch, Railing & Decking
Transform your outdoor space with the porch, railing, and decking solutions available at Dartmouth Building Supply. Whether you’re building a brand-new deck, upgrading your railings, or designing a full outdoor living space, our team is here to guide you through every step. From timeless wood options to modern low-maintenance composites, DBS offers the quality, selection, and expertise to bring your vision to life.
Decking Options
Choose from a wide variety of decking materials designed to fit your lifestyle and budget. For homeowners looking for natural beauty, DBS stocks exotic IPE, Red Balau mahogany hardwood, and SYP treated decking that add classic character and long-lasting strength. For those who prefer convenience and low upkeep, we’ve partnered with Azek/TimberTech and Fiberon to provide capped polymer and composite decking in natural-looking textures and colors. These high-performance options resist moisture, fading, and wear, while delivering style that outperforms the competition.
Railings & Accessories
Deck railing is more than just a safety feature — it enhances the look and feel of your outdoor space. DBS offers composite and vinyl railing systems in a wide range of profiles, colors, and infill styles, making it easy to find the perfect complement to your decking and home’s architecture. Complete your project with finishing touches like lighting, post caps, gates, and pergolas to create a polished, inviting outdoor retreat.
Design Support
At Dartmouth Building Supply, we do more than provide materials — we help you design outdoor spaces that match your vision. Our friendly, knowledgeable team can walk you through railing and decking choices, show you samples, and help balance style with budget. Whether you’re creating a space for entertaining, relaxing, or adding value to your home, DBS makes the process simple and enjoyable.
Bringing You Premier Decking Materials From Quality Brands
Roofing & Siding
New roofing and siding are among the best ways to protect a home, improve comfort, and boost long-term value, especially in the harsh conditions of New England. Dartmouth Building Supply offers a wide range of exterior solutions, from natural wood and engineered siding to fiber cement, vinyl, PVC, and durable roofing systems.
Our products are designed to deliver lasting performance, enhance curb appeal, and reduce maintenance, all while providing the strength and protection every home deserves. With expert guidance and reliable service, DBS makes it simple to choose the right materials to keep your home looking its best for years to come.
Molding & Millwork
Details That Define a Space
A Wide Range of Options
- Crown, casing, and base moldings – in wood, PVC, and MDF
- Custom profiles and reproductions – for one-of-a-kind projects
- Architecturally inspired collections – for proportionate, cohesive room design
- Columns, mantels, and stair parts – to complete any interior or exterior detail