Grade of plywood

TYPES OF PLYWOOD

Structural plywood: Used in permanent structures where high strength is needed. This includes flooring, beams, formwork, and bracing panels. It can be made from softwood or hardwood.

External plywood: Used on exterior surfaces where a decorative or aesthetic finish is important. It is not used to bear loads or stress, such as on exterior door surfaces, and wall cladding.

Internal plywood: This has a beautiful finish, for non-structural applications like wall paneling, ceilings, and furniture.

Marine plywood: It is specially treated using preservatives, paint, or varnish, to resist water damage. It is used in shipbuilding, resists fungal attacks and does not delaminate.

GRADES OF PLYWOOD

Plywood grades are determined by strength, discolorations, surface defects, and resistance to moisture, among other properties. The quality of surface veneer, type of wood, and strength of adhesive, will then be allocated a particular rating. Each rating will determine the type of application the plywood is suited for.

Plywood grades are N, A, B. C, and D. The D grade has several surface defects such as graining and knotting, while the N grade has few of these. An “interior C-D” rating for example, indicates the plywood has a grade C face, and a grade D back. It also means the adhesive is suited for interior applications.

The unique characteristics of plywood, its cost effectiveness, and ease of use will continue to popularize plywood as a building material.

Plywood (be it any grade or type) is typically made by gluing several veneer sheets together. The veneers sheets are manufactured from logs of wood obtained from different tree species. You therefore will find every commercial plywood made from different species of veneer.

Judge which kind of plywood you need according to your actual situation. We offer high quality and best price. All kinds of plywood are produced by changsong wood with high quality. You are welcome to order.

 


Post time: Apr-25-2022
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