Plywood

Plywood is available as the interior glue (MRI) for use indoorway, and as the exterior glue (WBP) for outdoor use.

The quality of the plywood outer veneer is characterized by how many defects and repairs are accepted according to the current standard:

B: No plugs, but a limited number of surface defects are allowed.

BB/ II: A limited number of plugs and a limited number of surface defects are allowed

CP/ III: Unlimited number of wood plugs and larger surface defects are allowed

C/ IV: Open camshafts and unlimited number of surface defects are allowed