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Quick Answers

What is the standard size of plywood?
In North America the standard is 4 x 8 feet (1220 x 2440 mm). In Europe it is 2500 x 1250 mm. Australia uses 2400 x 1200 mm. Thickness ranges from 6 mm to 25 mm depending on application.
Why is plywood 4 feet by 8 feet?
The 4x8 format originated in US construction because it matches 16-inch and 24-inch framing spacing without offcuts. European framing conventions led to a different sheet format (2500x1250 mm).
What thickness plywood do I need for formwork?
Most concrete formwork uses 12, 15, 17, or 18 mm film-faced or HDO plywood. The 18 mm thickness is the most common across markets. Thicker panels (21 to 24 mm) are used for heavy-pour walls and slabs with wider stud spacing.
Are plywood sheet sizes exact?
Nominal dimensions are rounded for convenience. Per EN 315, a 2440 mm length can actually measure 2438.5 to 2441.5 mm (1 mm per meter tolerance). Thickness tolerances are +0.74 / -0.94 mm.
Can I order custom plywood sizes?
Yes. Vinawood manufactures custom sheet sizes for container orders. Standard stock runs include 1220x2440, 2500x1250, 1500x3000, and 1250x2500 mm in multiple thicknesses.