PLYWOOD QUALITY CLASSES

PLYWOOD QUALITY CLASSES  https://www.woodproducts.fi/content/plywood

The choice of quality class of birch veneer-surfaced plywoods according to application (in brackets, the other generally used quality class) is presented in the table below.

Birch veneer-surfaced plywoods
A (E) flawless special quality (only available to a limited extent)
B (I) lacquered or waxed surface
S (II) paintable surfaces
BB (III) normal quality, for example under coverings, the most common quality in structures
WG (IV) for less demanding applications, a quality that cannot be repaired

The choice of quality class of conifer plywoods according to application is shown in the table below.

Conifer plywoods
E flawless quality, only pine-surfaced
I almost flawless quality, only pine-surfaced
II downstream quality with an intact surface
III non-repairable quality for construction
IV non-repairable quality for construction (background surface quality)

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