Join Date: Jun 2007
Location: Grapevine TX
Thanked 5 Times in 5 Posts
Rep Power: 9
Your some what limited in what you can prove or disprove now. If you bought American graded plywood then it could be C grade innner ply's for all you know. We don't grade then innner layers. The British system rates all layers but it uses a numeric system. You most likly bought either A/C grade or A/B grade. Add in that the football patches that are on the B or C grades aren't usually glued on the edges very well. And marine grade used to only cover fir plywood but southern yellow pine is also sould as marine plywood by a lot of lumber yards these days. Do however remember that there is a big difference between A grade and B grade veneers and that alone makes for a big difference in price.
!! WARNING !! The above information is to be used by intelligent people only. If you are Stupid, could be considered a moron, or otherwise. You are instructed to disregard this information and seek the help of a licensed and bonded professional.