Shop Wood I-Joists

 

Secure top-quality wood i-joists for your construction or renovation projects at AW Graham Lumber. As a premier local building supplies provider, we supply a comprehensive range of engineered lumber (EWP) designed to deliver enhanced structural integrity. Wood i-joists are dimensionally stable framing components that resist warping, twisting, and shrinking, making them ideal for long-span floor systems and robust roof construction. Our inventory includes precise, high-performance options like the wood i-joist 40 series 11-7/8-in x 2.5-in, which ensures level flooring and streamlines installation for builders. You can easily shop all building products or explore our complete product catalog to fulfill your material requirements. We are proud to be the home of dirt cheap prices, operating out of our lumberyard located at the junction of Highway 57 North and Maddox Pike in Flemingsburg, KY, USA. Our distribution network efficiently serves Kentucky and the surrounding nearby Ohio, West Virginia, and Indiana regions. To organize your project materials, create an account on our website, or contact us for direct assistance with your order.

 

We also offer vast selections of engineered lumber products designed for specific structural demands. For high-load capacity and main beam applications, our laminated veneer lumber (lvl) provides exceptional strength for headers and long spans. To frame perfectly flat, squeak-free floors, our wood i-joists offer superior stiffness and uniform performance. All our engineered wood components are available at an unbeatable price, ensuring you meet building codes without exceeding your budget.

 

Buyers guide: Selecting and installing the right floor system requires precision. Here is essential information regarding wood i-joist specifications and modifications:

 

• How close to the end can I cut a large hole? Large holes must be positioned away from the joist ends to maintain shear strength. Always refer to the manufacturer hole chart, as the minimum distance depends on the hole diameter and the joist depth. Generally, larger holes must be located closer to the center of the span.
  
  
• Can I drill small holes anywhere? Small holes, typically up to 1-1/2-in in diameter, can usually be drilled anywhere along the web length, provided they are spaced appropriately from other holes and do not cut into the flanges. Always consult the specific manufacturer guidelines before drilling.
  
  
• Can I notch the top or bottom flanges? No. You must never cut, notch, or drill into the top or bottom flanges of an i-joist. The flanges provide the primary structural bending strength, and altering them will compromise the entire structural component.
  
  
• What is the maximum span for a 40 series 11-7/8-in joist? The maximum span depends on the on-center spacing and the required dead and live loads. Typically, an 11-7/8-in joist spaced at 16-in on center can span approximately 18-ft to 22-ft in standard residential floor applications, but formal span tables or an engineer must confirm exact limits.
  
  
• Can I use them for heavy granite countertops? Yes, wood i-joists can support heavy loads like granite countertops or kitchen islands. However, the floor system must be designed to accommodate the extra dead load, which often requires closer joist spacing or a deeper joist series.
  
  
• Do I need web stiffeners for this size? Web stiffeners are often required at bearing points, such as where the joist rests on a foundation wall or a hanger, particularly for deeper joists or systems carrying high point loads. Review the specific installation guide for your required joist series.
  
  
• Can I use standard metal hangers? No. Standard dimensional lumber hangers do not provide the proper support for i-joists. You must use specialized i-joist hangers designed to support the specific flange width and joist depth to prevent web buckling and crushing.
  
  
• Is squash block or rim board needed? Yes. Squash blocks or engineered rim boards are required to transfer loads from load-bearing walls directly to the foundation. This prevents the i-joists from crushing under the concentrated vertical weight.
  
  

Ideal applications and projects using laminated veneer lumber (lvl):

 

• Framing heavy-duty structural headers over large windows and doors.
  
  
• Constructing main load-bearing beams to support multi-story residential floor systems.
  
  
• Replacing standard dimensional lumber for ridge beams in vaulted ceiling designs.
  
  
• Creating long, unsupported spans in open-concept floor plan renovations.
  
  
• Building custom staircase stringers that require superior dimensional stability.
  
  
• Providing robust structural support for heavy garage door headers.
  
  

Beyond engineered framing, our one-stop shop provides the foundational materials required for complete property development. Begin structural work using reliable lumber framing spf, lumber framing syp, and lumber studs and pre-cut framing. For expansive agricultural or commercial builds, we supply pole barn packages, trusses, steel rebar and shapes, and durable rough hemlock or rough pine lumber. Secure outdoor structures with lumber treated and acessories. Enclose the frame using structural panels such as osb, plywood-hardwood, and plywood-unfinished.

 

Protect the exterior with our extensive roofing and siding options. We carry high-quality roofing shingles, metal roofing and accessories, and durable vinyl siding. Maintain proper ventilation and drainage using roof vents/boots, mount blocks and gable vents, and integrated guttering. Complete the exterior envelope by installing energy-efficient windows, secure entry doors, and heavy-duty larson storm doors.

 

For interior finishing and climate control, regulate temperature using insulation fiberglass and insulation foam board before hanging drywall accessories and ceiling tile. Finish the interior spaces with elegant flooring, interior doors, and detailed moulding and trim. Add custom millwork touches with lumber-pine and knotty pine or premium cedar. Upgrade living areas with specialized storage solutions, including kitchen cabinets and accessories, bathroom cabinets and vanities, and adaptable shelving and accessories. Access elevated spaces easily with drop-down attic stairs.

 

Equip your work site with the necessary mechanical and electrical components, including electrical and lighting, plumbing department essentials, and heating and cooling units. Ensure absolute structural security using our broad selection of hardware and construction hardware. We supply all necessary connection materials, featuring fasteners, nails box, nails bulk, high-speed nails pneumatic, and corrosion-resistant outdoor screws. Finish your cabinetry and entrances with functional cabinet hardware, door hardware, and sliding barn door accessories.

 

Outfit your crew with professional-grade equipment, including manual hand tools, high-output power tools, replacement saw blades, and precision drill bits and drivers. Maintain strict workplace safety with gloves, eyewear and toolbelts, reliable ladders and scaffolding, and utility pocket knives. For exterior grounds and property maintenance, explore our robust masonry products-land tiles, decorative manufactured stone, and structural columns post and railings. Define property lines using fencing and highway-grade guardrail. Finally, maintain the facility and equipment with landscaping, lawn and garden tools, farm items, automotive care products, garage doors, backup generators, massive cargo containers, surface-prep paint and sundries, and essential housewares.