Glulam/SCL Guide [PDF]
Structural Composite Lumber (SCL)
SCL products are well known throughout the construction industry as a rectangular shaped product that has superior strength, stiffness, and consistency. Advancements in technology have given SCL manufacturers the ability to take apart a smaller log, sort the pieces, apply adhesive and reassemble them back together into an engineered product that has enhanced product performance. SCL products have grown in popularity because of the availability of long and wide dimensions without warp.
Types of Structural Composite Lumber
While most people are more familiar with product brand names available in the marketplace, there are several acronyms used to describe structural composite lumber, based on the size and shape of the wood pieces that are glued together:
- Laminated Veneer Lumber (LVL)
- Parallel Strand Lumber (PSL)
- Laminated Strand Lumber (LSL)
- Oriented Strand Lumber (OSL)
SCL members can be installed as floor or roof beams, headers over doors and windows, rimboard around the edge of a foundation, or as studs in wall framing.
Building codes specify that structural components, including engineered wood products such as SCL, must meet specific performance requirements from standard test methods before they can be used. All SCL products are rigorously tested for strength and durability with regular quality assurance tests performed during manufacture.
The many advantages of SCL products have increased their use in construction, even though they are typically more expensive.