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Plywood Grade (1-1) – US Plywood Standard (APA PS1-95 Construction and Industrial Plywood)

APA-The Engineered Wood Association is a nonprofit trade association focusing on helping the industry create structural wood products of exceptional strength, versatility and reliability . APA’s PS1-95 is an important standard for Construction and Industrial Plywood .

According to PS1-95, the grades of face/back veneers of plywood are classified as the following (*the following is not the full grade description and is only the simple explanation to the grades of plywood face/back veneers) :

Grade N : the premium grade for natural finish; free of open defects ( knotholes, holes, voids and so on ) ; no more than 6 neatly made repairs of wood are allowed .

Grade A : the high grade suitable for painting; free of open defects ( knotholes, holes, voids and so on ) ; no more than 18 neatly made repairs of wood or synthetic patching material are allowed .

Grade B : a few small defects as the following are allowed: minor sanding and patching defects; small worm or borer holes; small splits, neatly made repairs of wood or synthetic patching material; discoloration .

Grade C Plugged : a few normal size (6.4mm by 12.7mm) open defects (such as knotholes, worm or borer holes and so on) are allowed; repairs, patches and discoloration are allowed .

Grade C : a limited number of big size (not exceed 25mm measured across the grain) open defects like knotholes, worm or borer holes are allowed; other defects such as repairs, patches and discoloration are allowed to a limited extent .

Grade D : a limited number of large size (not exceed 65mm across the grain) open defects like knotholes, worm or borer holes are allowed; other defects such as repairs, patches and discoloration are allowed .

Please note:
*The above mentioned simple explanation to the veneer grades is only for helping understand the grades in plywood standard .
*The above mentioned explanation is not the full description of the plywood grades and can not be used as the plywood standard for production and business . Only the full Grade Description of Veneers in APA PS1-95 can be used for your production and business .
*Want to know more about APA PS1-95, please visit the website: APA-The Engineered Wood Association


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5 Responses

  1. An****** 2008/09/27 at 19:47:34

    Who can tell me the difference between B grade and BB grade!
    Thank you for your information.

  2. Mason Pan 2008/09/28 at 07:49:45

    1.Your mentioned B grade and BB grade are not from APA PS1-95 plywood standard .

    2.B grade is better than BB grade . Because a few small knots are allowed in BB grade . However, in practice, people usually use B grade veneers as BB grade veneers .

  3. Kap****** 2008/10/03 at 21:30:13

    please send price list following requirement
    Film Faced plywood with poplar core,
    WBP glue Black Film,
    15MM

  4. hem****** 2008/10/09 at 18:15:56

    Hi!kip
    we are expertised in manufacturing and exporting kinds of plywoods!

  5. Du****** 2012/05/16 at 09:37:43

    Where can I buy some Grade N?

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