Concrete Form Plywood. Plywood is an ideal material for concrete forming. It produces smooth surfaces and can be used repeatedly – some overlaid panels up to 200 times or more. The thinner panels can be bent easily for curved forms and liners.

Plywood is the best material for building concrete forms because it retains its shape and integrity following prolonged exposure to wet concrete. Cut OSB panels tend to swell on exposure to water. 

Plywood which is a manufactured product of timber is also used for formworks. It consists number of veneer sheets or plies in layers. Now a days, the use of plywood formwork increases especially for facing panels. The reason behind it is that the plywood formwork provides smooth finish when compared to normal timber formwork. Hence, finishing cost may reduce by the use of plywood. For formwork, special type of plywood called exterior plywood is used. The veneer sheets of exterior plywood are bonded with strong adhesive to make it watertight. The plywood boards are available in thicknesses from 7mm to 32mm. In general, plywood of size 1220 x 2440 and 18mm thick boards are sufficient for most of the works. For curved structures, special types of plywood with sufficient thickness are also available.

Advantages

• Plywood can also be cut into required size easily.
• Plywood Strong, durable and light in weight.
• Provides smooth finish on the surface.
• Very Large size plywood sheets are available which makes the construction of formwork quicker and easier.
• Curved formworks can also be prepared using plywood.
• When compared to timber, it gives more number of reuses.

Disadvantages

• When compared to timber it is costly.
• Thin plywood sheets cannot sustain the weight of concrete they may bow out if proper thickness is not provided.

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