What is Plywood? – Plywood Types and Its Uses

By: | February 13 , 2024

Plywood is a sheet material manufactured from thin layers or “ Plies “ of wood veneer that are glued together with adjacent layers having their wood grains rotated up to 90 degrees to one another. It is an engineered wood from the family of manufactured boards which include medium–density fibre board ( MDF) and particle board (chipboard).

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Plywood New

A plywood sheet having ISI mark photographed at a carpenter’s shop in Navi Mumbai, India. The IS specification number IS:303 is mentioned above, and a CM/L number (Licence number) is mentioned below the ISI mark.

All plywood bind resin and wood fibre sheets to form a composite material. The alteration of the grain is called Cross- graining and has many benefits.

It reduces the tendency of wood to split when nailed in at the edges. It reduces expansion and shrinkage and makes the panel strong in all directions. There is usually an odd number of plies so that the sheet is balanced- this reduces warping. So providing stiffness to the board.

Suggested Read: Which Plywood is Best For Kitchen Cabinets in India

Plywood Board

Types of Plywood

Basic Type :

1) Commercial MR grade for internal use.
2) Waterproof BWR grade for exterior use.
3) Marine Plywood.

Plywood manufacturers

Types of wood used:

  1. Hard wood – Harder and Stronger
  2. Soft wood – Lighter and weaker

Other Types

  • Flexible Plywood that can bend.
  • Film- faced shuttering plywood for Industrial use.
  • Structured Plywood for Industrial use.
  • Fire retardant Plywood – Internal and External grade plywood.

Suggested Read: What is Laminated Plywood – It’s Types and Design

Internal for indoor use.

External- waterproof, used outside.
Furniture- Commercial plywood used is internal MR (Moisture resistant) grade.
BWP ( Boiling Waterproof).
BWR – Boiling water resistant are called exterior grade plywood. They are made using phenolic resins and are adequately waterproof.
Marine plywood are superior grades of ply and superior to commercial ply. They are more expensive.
They are not used for furniture making. These are used for boat building and other Industrial uses when there is prolonged exposure to water.

Suggested Read: What is MDF (Board/Wood) – Its Uses & What it is Made of

Plywood mainly used are

  • Hardwood plywood – made from teak – gurjan wood, birch wood.
    If all veneers are made from hardwood it is called 100 % hardwood plywood. The cost is higher.
  • Soft wood – made from cedar, SPF ( Spruce-pine-fir) or Mango wood.

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Plywood Types according to Trees

  1. Gurjan Plywood
  2. Teak Plywood
  3. Red wood Plywood
  4. SPF Plywood

Flexible Plywood also called flexiply, it is not stiff. It can be rolled up.
It is used for creating rounded shapes in furniture.

FR Grade

Fire resistant It is used in public theatres, malls, shopping complexes, and Restaurant kitchens. The surface is coated with chemicals to delay the burning process.

  • Marine Grade: For Boats and Ships

It is most resistant to water.

Termite Resistant and Borer proof :

It is protected from Termites and borers.
Structural Plywood for construction applications where structural stability is important.

Suggested Read: What are Advantages and Disadvantages of MDF Board

Concrete Shuttering plywood.

It is used to help settle concrete in buildings.
Film–faced shuttering plywood
It has a shiny phenolic film over the surface so that the concrete does not stick to the plywood. Plywood is decorated using laminates, paints, polish, and veneer.

Decorative Laminates such as Sunmica or others (which are actually a blend of paper and plastic) are glued over the plywood surfaces. Laminates are available in a very wide variety of colours, patterns and textures, and is the most common way of decorating plywood furniture and panels.

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Paint has for long been a way of protecting wood and increasing its beauty. It is a low-cost alternative to laminates or veneers and a large choice of wood colours are available.

Suggested Read: MDF vs. Plywood vs. Particle Board

Wood Polish is usually used on wooden furniture that is made of quality hardwoods such as teak, however, polishing plywood is not uncommon. Carpenters often use wood polish (of darker colours) on some parts of furniture (such as the underside of tables and the inside planks of single and double beds).

Wood veneers are thin slices/sheets of quality wood such as teak, which can be glued over the plywood surface to increase its beauty and make it look richer. Most casual observers cannot differentiate between a piece of solid teakwood furniture and one that simply has a teak veneer on the outside. Veneers are usually the costliest way of decorating plywood.

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So we see that plywood is a very essential material in indoor and outdoor extension work. It is a multipurpose and extremely useful and niche material.

Uses of Plywood

Plywood is a crosslink of wooden sheets attached together with grains at 90 degrees to each other. These are stuck together using resins. It is a mixture of MDF (Medium density board) and chipboard and particle board. It is made of thin layers of sheets all stuck together.

Uses of Plywood

Some Major Uses of Plywood are:

  • If strong material is required there is necessary to use it as a high-quality layered wood material.
  • Resistance to bending, breaking, splitting, and warping makes it good for the construction and furniture industry.
  • It is good for using outdoors.
  • Since 1939 it has been used for shipping in space and aviation.
  • Low moisture plywood for the shipping industry.
  • For curved shapes, it bends easily.

Plywood is majorly needed where one requires higher quality, high-strength sheet material. It must resist cracking, breaking, bending, warping and twisting.
Exterior glued plywood is good for outdoor use, but optimal performance happens when the moisture content is low. Subzero conditions do not affect the dimensional or strength properties of plywood so good for certain applications. It goes well for aviation purposes and the shipping industry since world war two.

Softwood Plywood Applications

  • Spruce plywood has been used for floors, walls, and roofs in home construction.
  • Wind bracing panels
  • Indoor bodywork of vehicles
  • Packing boxes
  • Fencing

Certain coat solutions which hide the grain structural surface of spruce plywood have uses requiring greater strength, then more coats are applied

  • Concrete shutting panel
  • Ready to paint surfaces for construction

Plywood Applications for Hardwood

  • Phenolic resin film coated plywood is typically used as a ready installation component
  • In parks in community systems
  • Certain floors
  • Transports vehicles
  • Floors which handles with machines.
  • Scaffolding materials.
  • Also plywood is used in wind turbine sheds, and insulating boxes for liquefied natural gas carriers.

The smooth surface with durable natured birchwood has various uses:

  • High-end loudspeakers
  • Die Cutting Boards
  • Parapet support structure
  • Signs and fences for advertising use.
  • Musical Instruments
  • Playground Equipment
  • Sports Equipment

Tropical plywoods also have special uses:

  • Common Plywood
  • Concrete Panel
  • Structural Panel
  • Flooring
  • Lamination Board
  • Laminated Lumber

Another way of classifying this material is in terms of:

  • Structural Plywood
  • Exterior Plywood
  • Interior Plywood
  • Marine Plywood

1. Structural Plywood: Should be strong because it’s exposed to extreme weather conditions.
Uses: Beams, Internal Structures, Subfloor, Shipping areas, wall bracing, roofs.

2. Exterior Plywood: Best for outside the home and is bound together using waterproof glue. Should be painted for extra protection against the sun.
Uses: Walls, outdoor flooring, roof, Shelves.

Exterior Plywood

3. Interior Plywood: More asthetic than durable.

Uses: Indoor furniture, ceilings and interior cladding.

Interior Plywood

4. Marine Plywood: When water protection is a must.

Uses: For docks and boats.

Some Unusual Uses of Plywood

Skateboard ramps. Have a smooth finish. It is a smooth and flexible material.
Film sets: Cheap, light and discardable so used to make film sets and stage sets.

unusual uses of plywood
So friends here was a rough cut out of the uses of plywood. A versatile human creation.

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