GLULAM WOOD SPECIES AND APPEARANCE GRADES
We offer a variety of options that affect the finished appearance, strength, and longevity of our glulam products - from raw materials to coatings. Here is an overview of the variables that should be specified for your next glulam job.
For glulam members exposed to weather or harsh outdoor environments, we offer CCA and Penta treated material. Partially exposed members can even be fabricated with treated and non-treated zones.
Forest Stewardship Council™ Certification
We are Forest Stewardship Council™ (FSC®) chain-of-custody certified, making us the right choice for LEED certified projects. FSC® material must be specified.
Appearance grade refers to visible knots and defects on the wood surface. One of the following grades should be specified:
For jobs where appearance is of critical importance. Allows only very small knots and voids on exposed surfaces. Any other voids and defects are plugged with clear wood inserts, not just wood filler.
The most common appearance grade for Unalam jobs. Ideal for exposed projects, where the appearance of natural knots and small voids in the wood is acceptable. Any other voids and defects are plugged with clear wood inserts, not just wood filler.
For projects where glulam will be hidden from view or appearance is not critical. Sides of members are planed, but voids or other defects on the edges of laminations are not repaired.
Design values are available in ANSI 117-2010, which can be downloaded free here.
Typical SYP Combinations
24F-V3 for simple span beams