Modern kitchen with MDF cabinetry and wall units

Exterior Grade Medium Density Fibreboard (MDF)

Formed under controlled heat and pressure using refined wood fibers and adhesive resins, this high-performance board offers superior consistency and strength. Designed for applications where panels may be exposed to moisture and high humidity, Exterior Grade MDF offers enhanced water-resistant properties compared with standard interior MDF.

Its stability and workability make it suitable for applications that demand dependable performance under more challenging environmental conditions. The board can also be moulded, profiled, routed and grooved, while its surface can be painted, stained, laminated, veneered, lacquered or coated with PVC to achieve different functional and aesthetic requirements.

Thickness
2.1mm, 2.3mm, 3mm, 3.4mm, 3.6mm, 4mm, 4.5mm, 4.75mm, 5.2mm, 5.5mm, 7.3mm, 7.5mm, 11mm, 12mm, 14.5mm, 16.7mm, 17mm, 18mm, 25mm
Common Size
8feet x 4 feet
  • Built Strong
  • Excellent Machinability
  • Water Resistant
  • Highly Durable

Technical Specification

High-performance engineered panels built for high humidity, precision routing, and flawless finishes.

Technical Information as per IS 12406.

  • 850 kg/m³Density

  • +1.50%Variation from Mean Density

  • 3.02%Water AbsorptionAfter 2 Hrs Soaking

  • 9.11%Water AbsorptionAfter 24 Hrs Soaking

  • 3.55%Linear Expansion — ThicknessAfter 24 Hrs Soaking

  • 0.22%Linear Expansion — LengthAfter 24 Hrs Soaking

  • 0.22%Linear Expansion — WidthAfter 24 Hrs Soaking

  • 1.85%Surface Absorption — ThicknessAfter 2 Hrs Soaking

  • 38 N/mm²Modulus of RuptureAverage

  • 35 N/mm²Modulus of RuptureMinimum Individual

  • 3500 N/mm²Modulus of ElasticityAverage

  • 3320 N/mm²Modulus of ElasticityMinimum Individual

  • 1.38 N/mm²Internal Bond

  • 0.33 N/mm²Internal BondAfter Accelerated Water Resistance Test

  • 2250 NScrew WithdrawalFace

  • 1650 NScrew WithdrawalEdge — Thickness >12 mm

Close-up of smooth MDF board edges

Explore our range of MDF solutions, each developed to meet specific application and performance requirements.

Explore our MDF Range

  • Interior MDF

    Designed for general interior applications where a smooth, consistent and easy-to-finish surface is required.

    Explore: Interior MDF
  • HD HMR

    A high-density, moisture-resistant MDF solution designed for demanding interior applications.

    Explore: HD HMR

Frequently Asked Questions

  • Exterior Grade MDF is an engineered wood panel designed for applications where the material may be exposed to moisture and high humidity. It has high water-resistant properties and a homogeneous structure.

  • It suits applications where panels may be exposed to moisture and high humidity, and that demand dependable performance under more challenging environmental conditions.

  • Yes. It offers enhanced water-resistant properties compared with standard interior MDF.

  • Exterior Grade MDF is available in thicknesses from 2.1mm to 25mm. The common sheet size is 8 feet x 4 feet.

  • Yes. Its surface can be painted, stained, laminated, veneered, lacquered or coated with PVC.

  • Interior MDF is intended for indoor use with minimal to no moisture exposure; Exterior Grade MDF is designed for panels exposed to moisture and high humidity, with enhanced water-resistant properties.