Traditional Engineered Wood
Engineered wood is comprised of wood veneers, lumber, panels, fibres or strands bound together with an adhesive. These products offer high-performance and dimensionally stable options for any building project, whether large or small, residential or commercial. Structural engineered wood products offer incredible design versatility for architects. Specialty engineered wood products offer unique characteristics suitable for building diverse end-use products such as boats, truck bodies and even upholstered furniture. Furthermore, these products can be designed and ordered to specification, thereby reducing construction waste.
Wooden members made of two pieces of solid lumber or laminated veneer lumber (LVL) held together with a web of oriented strand board (OSB). I-joists are often substituted for wide dimensional lumber as a support for a ceiling or floor.
Made of short pieces of wood that are joined to form longer lengths, finger-jointed lumber is used in door jams, mouldings and studs. It is also produced in long lengths and wide dimensions for floors.
Structural Composite Lumber
Structural Composite Lumber (SCL) is a family of engineered wood products created by layering dried and graded wood veneers, strands or flakes with moisture resistant adhesive into blocks of material which are then re-sawn into specified sizes. SCL includes laminated veneer lumber (LVL), parallel strand lumber (PSL), laminated strand lumber (LSL) and oriented strand lumber (OSL).
- Laminated Veneer Lumber (LVL) - LVL is made up of dried softwood veneers, bonded together with adhesives so that the grain of all veneers is parallel to the long direction. With a very high strength-to-weight ratio, LVL columns, beams and lintels are often chosen to replace dimension lumber or glulam as columns, beams and headers. The many uses of LVL include headers and beams, hip and valley rafters, rim board, scaffold planking, studs, flange material for prefabricated wood I-joists and truss chords.
- Parallel Strand Lumber (PSL) - PSL is manufactured from veneers clipped into long strands laid in parallel formation and bonded together with an adhesive to form the finished structural section. It is well suited for use as beams and columns in post-and-beam construction, and for beams, headers and lintels in light framing. Visually attractive, PSL is suited to applications where finished appearance is important, as well as structural applications where appearance is not a factor.
- Laminated Strand Lumber (LSL) -LSL is made by aligning thin chips or strands of wood and then gluing them under pressure. The wood grain of the strands is oriented parallel to the length of the member and then the wood member is machined to consistent finished sizes. It is strong when either face- or edge-loaded, but typically has lower strength and stiffness properties than LVL. LSL is commonly used in a variety of applications, such as beams, headers, studs, rim boards and millwork components.
- Oriented Strand Lumber (OSL) - Similar to LSL, OSL is also made from flaked wood strands. Panels are made from narrow strands of fibre oriented length-wise and then arranged into layers at right angles to one another, laid into mats and bonded together with waterproof, heat-cured adhesives.