US Standards for Wood-Based Panels US Standards for APA Trademarked Panels There are two product standards covering the manufacture of US wood-based panel products: US Voluntary Product Standard PS1-19.US Product Standard PS2-18.APA-trademarked plywood panels are covered by PS 1-19 and PS 2-18.APA OSB panels are manufactured to US PS 2-18. For more technical information on APA products, click here. APA also has its own Performance-Rated Panel Standard – PRP 108.  This …

Plywood classes explained Timber & Joinery We look at the different classes of plywood, class 1, 2 and 3, and explain the differences. Plywood undergoes strict testing on bonding and durability to prove that it is worthy of usage within the construction industry.  There are 2 standards, known as “harmonised standards”, that work together to determine which plywoods can be …

(BS) EN 314-2: 1993 (confirmed in 2013) Plywood – Bond quality – Requirements Orignal source https://apawood-europe.org/official-guidelines-3/individual-standards/en-314-2/ This part of the standard specifies the requirements for bonding classes of veneer plywood according to their end uses.  It lists three classes of bond quality. Bond Class 1: Dry conditions ‒ interior applications with no risk of wetting. This is equivalent to a moisture content in …