Shop TimberStrand LSL Rim Board

Enhance your construction projects with quality TimberStrand LSL Rim Board from Arlington Coal & Lumber! With decades of experience serving the Bay State's building supply needs, our experts are ready to help you select the ideal TimberStrand LSL Rim Board and other Engineered Wood Products (EWP) for your project. We are your best partner in bringing your dream project to life by providing best material estimates with our friendly locations from Arlington Coal and Lumber Company, Burlington Lumber Company, Wilmington Builders Supply, Sudbury Lumber Company, Chelmsford Lumber Company, and Hudson Lumber Company.

Why choose TimberStrand LSL Rim Board from Arlcoal.com? TimberStrand LSL Rim Board is a high-performance Engineered Wood Product (EWP) - specifically a type of Laminated Strand Lumber (LSL) - manufactured by Weyerhaeuser. It's a solid, rectangular component designed for use with engineered wood joist floor systems, such as TJI Joists. The Laminated Strand Lumber (LSL) process involves cutting underutilized logs (often aspen) into long, thin wood strands. These strands are then coated with a structural adhesive, arranged into large mats with a specific orientation, and pressed under high heat and pressure using a steam-injection process. This advanced manufacturing creates a building material that is uniform, strong, and highly predictable in its performance, unlike traditional sawn lumber:

• It excels at transferring vertical loads (from walls or floors above) down to the support element below (like the foundation or a wall plate). It is also critical for transferring lateral loads (forces from wind or seismic activity) from the floor and roof diaphragms to the shear walls below, which is vital for the home's ability to resist high-force weather events.
  
  
• As an engineered product, it is manufactured to be straight and true, resisting the common issues of bowing, shrinking, twisting, and splitting found in traditional lumber. This ensures a predictable and consistent connection point.
  
  
• It is specifically sized to match the depths of popular TJI® Joists and other engineered components. This precision minimizes on-site cutting, reduces material waste, and ensures a flush, easy fit, resulting in faster and more accurate installation.
  
  
• Its dense, uniform composition provides an excellent and robust nailing surface for subflooring, exterior deck ledgers, and wall components, enhancing overall structural integrity and load-holding capacity.
  
  
• It's available in longer lengths than most traditional rim boards, which allows for faster installation and results in fewer joints, contributing to better insulating values and a more continuous structural envelope.
  
  

Ideal Applications:

• Floor System Framing: Provides a durable, load-bearing closure at the ends of floor joists, creating a robust connection between the floor system and the supporting structure below (foundation or wall). Floor systems in single-family homes, multi-family units, and light commercial buildings, especially when using I-joists or other EWP.
  
  
• Lateral Load Resistance: Acts as the essential structural link that transmits wind and seismic forces from the floor and roof down to the shear walls and foundation, which is vital for structural safety. Buildings in areas with high wind loads (like the Greater Boston and New Hampshire coast) or regions requiring specific seismic-resistant designs.
  
  
• Non-Rim Board Uses: Due to its strength and stability, the common 1-1/4" TimberStrand LSL is also perfectly suited for other construction uses. Stair Stringers (offers long spans and resists bowing/splitting) and any other application requiring a strong, consistent, and dimensionally stable member.
  
  

Boost your job site efficiency and minimize costly callbacks with the consistency of TimberStrand LSL Rim Board. Available in long lengths for faster installation and precisely sized to match your TJI® joists, this Engineered Wood Product (EWP) is the smart choice for local contractors in Massachusetts and New Hampshire. You can also browse our wide selection of top-quality Engineered Lumber including: Beams ( Microllam LVL) Columns ( Parallam PSL), Dimensional (EWP) ( TimberStrand LSL), Joists ( TJI Joists, TJI 110, TJI 230, TJI 360, TJI 560), and many more. We are your local, authorized supplier, ready to deliver high-quality, code-compliant solutions to your Greater Boston or New Hampshire site. Request a fast quote now and let us help you build a stronger, straighter floor system with less waste.