Glued Laminated Timber (Glulam) Print E-mail
Glued Laminated Timber, often referred to as Glulam, is an engineered structural product. It is produced by bonding together a number of graded, seasoned and mostly finger-jointed laminates with a proven structural adhesive to form a solid member. The laminates are bonded together with the grain running essentially parallel. Although the cross-section, length and shape are limited only by manufacturing, transport and handling capabilities, there is a range of standard sizes available.

When the laminates are glued together the laminated product usually has a higher grade than the individual pieces. It is possible to manufacture a glued laminated beam with higher strength laminates in the areas of higher stress, such as the top and bottom of the beam, and lower strength laminates in the area of lower stress.

Vertical glued laminated timber has laminations perpendicular to the short dimension in the cross section.

Horizontal glued laminated timber has laminations perpendicular to the long dimension in the cross section.

Because the product is made up of many laminates, any strength reducing characteristics (that might affect a piece of solid timber of the same cross section) are not present in a glued laminated product. If a strength reducing characteristic is present, it is confined to just one laminate. Predictions of strength and performance are very reliable.

Although the use of a durable adhesive provides a bond of long-term effectiveness, it does not imply that the veneers being bonded together will have any long-term durability. If Glued Laminated Timber is to be used in service conditions that are liable to encourage decay, then it should be purchased as preservative treated to the appropriate hazard level. (See: Treated Timber)

Most Glued Laminated Timber can be made termite resistant by preservative treatment to H2 level. (See: Treated Timber)

Australian Wood Panels Association
AWPA is an organisation formed to promote the use of reconstituted wood products such as MDF and Particleboard and further research and development to conserve the agricultural and forestry resources of Australia.