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Panel Pallets
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OSB Pallet |
Plywood Pallet |
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There are primarily two types of panel pallets, Plywood and OSB (Oriented Strand Board). Each type of panel is broken into different exposure durability classifications. Plywood is broken into four exposure durability classifications; Exterior, Exposure, Interior, IMG or Exposure 2. OSB is broken into two exposure durability classifications; Exterior, Exposure. The classification is made on the basis of resistance of the gluebond to moisture, as affected by the adhesive used, veneer grade and panel construction.
Exterior
Plywood that is permanently exposed to the weather shall be Exterior.
Exterior plywood is made with fully waterproof glue and, in addition, is composed of C-grade or better veneers throughout. This combination provides maximum resistance to the effects of daily cyclic variations of the moisture and temperature caused by permanent exposure to weather.
Exposure 1
Exposure 1 plywood may be used for application, which are not permanently exposed to the weather.
Exposure 1 plywood is made fully with waterproof glue, but may not include D-grade veneers. It is suitable for applications where long construction delays may be expected prior to providing protection, or where high moisture conditions may be encountered in service. It is also suitable for pressure-preservative or fire-retardant treatment. Because of the veneer grades used, panels under prolonged severe moisture conditions may occasionally develop limited, highly localized glueline delaminations coincident with grade characteristics. However, such localized delamination, within allowable limits defined in Voluntary Product Standard PS 1-95, will not affect structural performance.
IMG (intermediate glue) or Exposure 2
IMG or Exposure 2 plywood may be used for protected applications which are not continuously exposed to high humidity conditions.
IMG or Exposure 2 plywood is made with glue of intermediate resistance to moisture. It may be used where conditions of intermittent high humidity may exist. Check local suppliers for availability before specifying Exposure 2.
Interior
Interior plywood may be used for permanently protected interior applications.
Interior plywood is made with moderately moisture resistant interior glue. Short periods of humidity up to 90% in service can usually be tolerated.
For more information on Plywood and OSB, visit the . website
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