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Mass Timber
Engineered Wood
Structural Panels

Parallel Strand Lumber

Parallam PSL (Parallel Strand Lumber) uses a process patented by Weyerhaeuser to bond together thin strands of wood typically 4-8 feet long. PSL manufacturing involves little waste, as almost all parts of a log are used in the product.

PSL is much more uniform than sawn timber or Glulam, as all defects such as knots are distributed uniformly in the glue matrix; this gives PSL one of the highest strengths of any engineered wood product. Due to its uniformity, PSL offers good connection strength and ductility - it is not prone to splitting failures at connections like sawn timber or Glulam. It also has strong insect resistance.

Southern Pine, Yellow Poplar, Douglas Fir, Western Hemlock
1451kg CO2 sequestered per tonne
Cross Section
3.5"-7" (89-178mm) thick, 9.5"-18" (241-457mm) deep
Only limited by shipping constraints
Planed, Sanded, Factory Sealed