Plywood Thickness & Size in mm: Standard Sheet Dimensions from 5mm to 30mm

Selecting plywood involves more than choosing a finish or brand. Thickness and sheet size directly influence strength, stability, and how well furniture or interiors perform over time. From thin boards used for decorative layers to heavy sheets meant for load-bearing applications, understanding these specifications helps avoid costly mistakes.

At Greenply, we offer plywood options across a wide range of thicknesses and standard sheet dimensions, designed to suit furniture, kitchens, wardrobes, and construction requirements with consistency and reliability.

Understanding Plywood Thicknesses and Standard Sheet Sizes

The thicknesses of plywood available determine where and how a board can be used. Common ply board thickness in mm ranges from lightweight options for surface applications to thicker boards required for strength-focused installations. These thickness options are designed to meet different interior and structural needs without compromising performance.

Along with thickness, the dimensions of a plywood sheet play an important role in planning. Standard plywood sizes in mm are generally manufactured in 2440 × 1220 mm sheets. These dimensions support efficient cutting, easier handling, and reduced wastage during furniture production and interior execution.

Thin Plywood Sheets: 5mm to 9mm Options

Thin plywood sheets are typically selected for areas where weight needs to be controlled, and the board is not expected to carry a load independently.

A 5mm plywood sheet is commonly used for cabinet backs, drawer bottoms, wall panelling layers, and decorative surfaces. It performs well when supported by frames or substrates. Nine-millimetre plywood offers added stiffness and is often used for light partitions or backing panels in furniture.

For these applications, Greenply Club 700 Plywood is often recommended in thinner thicknesses due to its moisture resistance and uniform construction, supporting long-term indoor use.

Medium Thickness Plywood: 12mm to 16mm Range

Medium-thickness plywood forms the base of most residential interior furniture.

Plywood 12mm is widely used for cabinet shutters, shelves, and wall panels. 15 mm plywood is preferred for wardrobe panels and modular furniture where added rigidity is required. 16mm plywood is often selected for furniture frames, internal partitions, and storage units that handle regular use.

Within this range, Greenply Gold Plywood is recommended for interior furniture due to its moisture-resistant properties and termite protection, supporting durability in everyday residential environments.

Furniture-Grade Plywood: 18mm and 19mm Sheets

Thicker plywood sheets are chosen when furniture strength and stability are a priority.

An 18mm plywood sheet is a standard choice for beds, wardrobes, sofas, and kitchen cabinets. It offers dependable load-bearing capacity while remaining manageable during installation. Nineteen millimetre plywood is also used for similar applications where additional stiffness is required.

For heavy furniture and cabinetry, Greenply Club 700 Plywood in this thickness range is recommended due to its suitability for long-term interior use.

Extra Thick Plywood: 25mm to 30mm Boards

Extra-thick plywood is used in applications where structural strength and reduced deflection are required.30mm thick plywood and 25mm boards are commonly selected for staircases, raised platforms, worktops, and industrial furniture. 

In moisture-prone or demanding environments, Greenply 710 Marine Plywood is recommended due to its boiling water-proof properties, making it suitable for kitchens, utility areas, and construction-related use.

Key Features to Consider With Plywood Thickness

When selecting plywood, thickness should always be reviewed alongside performance requirements and usage conditions.

The key features that influence plywood selection include:

• Load-handling ability, which improves with increased thickness
  

• Resistance to moisture for kitchens, bathrooms, and utility areas
  

• Protection against termites for long-term durability
  

• Stability that reduces bending and surface distortion over time
  

Considering these features together helps ensure the selected plywood thickness size in mm performs reliably throughout its intended lifespan.

Comparison: Plywood Thickness vs Application Needs

Different thickness levels align with different usage requirements, and mismatches often result in performance issues.

Thin sheets are suitable for decorative and non-load applications. Medium-thickness boards work well for cabinets, wardrobes, and interior furniture. Extra-thick plywood supports heavy-duty and structural installations.

Compared with unbranded options, branded plywood offers consistent thickness, verified strength, and dependable quality across every sheet, regardless of the different thickness of plywood in mm selected.

Why Choose Greenply for Accurate Plywood Selection

At Greenply, we focus on offering plywood solutions that address varied interior and construction needs with clarity and consistency:

• A wide range of thickness options covering decorative, furniture, and heavy-duty use
  

• Products manufactured as per the relevant IS standards
  

• Moisture-resistant and marine-grade plywood options for demanding environments
  

• Clearly defined grades that support informed selection
  

With our structured product range, we help simplify selection across plywood thickness size in mm and sheet dimensions, ensuring dependable performance over time.

Buying Tips for Choosing the Right Plywood Thickness

Selecting the right plywood thickness requires careful evaluation of usage and environment.

• Match thickness with expected load rather than choosing thicker boards by default
  

• Avoid thin plywood for furniture that supports continuous weight
  

• Check grade markings based on moisture exposure and location
  

• Confirm sheet dimensions before purchase to reduce cutting wastage
  

• Choose branded plywood for consistent thickness and verified quality
  

Following these steps helps ensure stability, durability, and value over the long term, especially when comparing extra-thick plywood with standard options.

Conclusion

Choosing the right plywood thickness and sheet size supports furniture strength, dimensional stability, and lasting performance. From a 5mm plywood sheet used in decorative applications to 30mm thick plywood for demanding installations, informed decisions help reduce maintenance and replacement costs. At Greenply, we offer plywood across thickness ranges and standard dimensions designed to meet interior, furniture, and construction needs with dependable quality.

FAQs

1. What plywood thickness is commonly used for residential furniture?
Residential furniture typically uses ply board thickness in mm between 12mm and 18mm. These options provide sufficient strength for wardrobes, cabinets, and beds while remaining easy to handle during installation.

2. Which thickness works best for wardrobes and storage units?
Wardrobes and storage units generally perform well with 16mm plywood or 18mm plywood sheets, as these thicknesses support shelves and shutters without bending under regular use.

3. Are plywood sheet dimensions consistent across thickness options?
Yes, most thickness options follow the same dimensions of a plywood sheet, usually aligned with standard plywood sizes in mm, making planning and replacement easier.

4. When should thicker plywood be selected over standard options?
Thicker boards, including extra-thick plywood, are selected for staircases, platforms, and furniture exposed to higher loads or frequent movement.

5. Does plywood thickness alone determine durability?
Thickness contributes to strength, but durability also depends on grade, moisture resistance, termite protection, and overall manufacturing quality, not thickness alone.