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Plywood Thickness Guide

Plywood Thickness Guide

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While plywood is a very versatile material on its own, its thickness is a very important factor for craftsmen and builders alike in making informed decisions for projects that use plywood.

Thickness plays a pivotal role in determining the suitability for various projects, as this statistic directly impacts the strength, durability, and versatility of the final product.

Let’s take a look at the common thicknesses of plywood, as well as their respective uses, strengths and considerations.

3mm plywood:

Often employed in projects requiring lightweight and flexible material, such as crafting miniature models, decorative wall paneling, and intricate scrollwork. Its thin profile makes it suitable for veneering or laminating onto other surfaces for aesthetic enhancement.

5mm plywood:

This thickness of plywood finds application in projects demanding slightly more durability, such as backing panels for cabinets, drawer bottoms, and interior partitioning. Its moderate strength-to-weight ratio makes it suitable for furniture components that require stability without excessive weight.

6mm plywood:

Commonly used in interior construction projects like lightweight furniture, decorative wall coverings, and ceiling paneling. It's also suitable for crafting smaller-scale items such as decorative boxes, picture frames, and model making due to its ease of cutting and shaping.

9mm plywood:

Ideal for general-purpose construction work including shelving, subflooring, and exterior cladding due to its increased strength and stability compared to thinner plywood. It's also commonly used in DIY projects such as building storage boxes, garden furniture, and small structural components.

12mm plywood:

Often employed in furniture construction for items such as cabinets, tabletops, and shelves where increased thickness provides added strength and stability. Additionally, it's used in structural applications like roofing underlayment, sheathing, and temporary partitions in construction projects.

18mm plywood:

Well-suited for heavy-duty tasks such as load-bearing walls, flooring, and concrete formwork where robustness and stability are paramount. Its thicker profile also makes it suitable for exterior sheathing and marine applications where durability and weather resistance are critical.


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