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Engineered Lumber. Parallam® PSL. Use beams, headers, and columns made from Parallam PSL and open up a whole new world of design options for the interior of a home. Create long, clear spans and support heavy loads, whether inside or out in the elements.
Add strength and reliability to your structure when you use Parallam® PSL beams. The superior strength of Parallam® PSL makes longer spans possible, giving you more design options with open, spacious floor plans.
Parallam® PSL columns are strong and consistent. Our manufacturing process uses veneer strands, allowing a significant percentage of each log to become a high-grade structural member. Combine their great load capacity with the strength of Parallam PSL beams for additional possibilities.
Parallam ® PSL (Parallel Strand Lumber) is the strongest of Weyerhaeuser’s engineered wood products and a great choice for applications that demand high load capacity. Parallam ® PSL is made by laminating strands of veneer together to form large billets.
TREATED PARALLAM PLUS PSL BENEFITS: Engineered lumber components for long-term durability and performance. Treated to the core, eliminating field treatment when cut or drilled. Protection against termite damage and fungal decay. The ideal structural solution for most exterior applications.
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Use these simple calculators to size Weyerhaeuser Trus Joist TimberStrand LSL and Parallam PSL beams and headers.
Weyerhaeuser manufactures Trus Joist Parallam PSL using long, narrow wood veneer strips bonded together with adhesives in a press and microwave process. The material is free of knots and other defects, and has exceptional fastener holding capability.
With Parallam® PSL, the addition of a hole is a straightforward and simple process. Parallam® PSL is a strong and consistent engineered wood product (EWP) ideal for long spans and open floor plans without intermediate posts or columns.
Trus Joist® Parallam® PSL and commodity 24F-V4 glued laminated timbers (glulam) are often thought of as interchangeable; however, these two beam technologies have distinct differences which are important to understand when specifying beam material.