Definition
Engineered lumber includes LVLs, I-joists, and glulams—composite products optimizing strength and span capability. They're less affected by moisture and defects than solid lumber, enabling longer spans with less material. Building codes prescribe allowable spans.
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Engineered lumber products are manufactured from wood veneers and adhesives to optimize strength and span capability. Common types include laminated veneer lumber (LVL), engineered I-joists, and glued-laminated beams (glulams). Products are less affected by moisture and defects than solid lumber. Engineered lumber enables longer spans with less material, reducing weight and cost. Building codes prescribe allowable spans based on product and grade.
Pro Tip
Engineered lumber offers better value and performance than solid lumber in many applications. Discuss options with your builder.
Example
A home uses engineered I-joists for floor systems, allowing 20-foot spans and less wood waste compared to solid 2x10 lumber.