Glulam Appearance Classifications for Construction Applications
Technical Note
A common source of confusion in the construction industry is the relationship between glulam appearance classifications and structural properties. This technical note clarifies the distinction between cosmetic appearance classifications and structural layup combinations, helping industry professionals make informed decisions when specifying glued laminated timber.
This publication is designed for: architects, engineers, contractors, builders, specifiers
The publication explains how structural properties of glulam are determined by layup combinations and lumber grades rather than appearance classifications. It provides detailed descriptions of each appearance classification (Premium, Architectural, Industrial, and Framing) including their specific characteristics, typical applications, and commentary on appropriate use.
Key sections include:
Appearance characteristics versus structural properties of glulam
Commentary on appearance classes
Special appearance consideration
Published by APA — The Engineered Wood Association.
