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What Is MDF? MDF Board Explained: Uses, Types & Thicknesses
Plywood Etc • Sheet Material Guide
What is MDF?
MDF board explained.
MDF stands for Medium Density Fibreboard. It is an engineered wood-based sheet material made from refined wood fibres bonded with resin and compressed under heat and pressure.
Unlike natural timber, MDF has no conventional wood grain or knots. Its smooth, consistent structure makes it popular for furniture, shelving, cabinets, wardrobes, wall panelling, painted joinery and many other interior projects.
In simple terms:
MDF is wood fibre turned into a dense, smooth and
consistent board.
MDF at a glance
Smooth, uniform and easy to machine, MDF is one of the most widely used engineered wood sheet materials for furniture, joinery and interior projects.
It is available in a range of thicknesses and specialist grades for different requirements.
01
What does MDF stand for?
Medium Density Fibreboard
02
Is MDF solid wood?
No — it is an engineered wood product.
03
Is MDF waterproof?
Standard MDF is not waterproof.
04
What is MDF used for?
Furniture, cabinets, shelving and more.
THE BASICS
What exactly
is MDF?
Medium Density Fibreboard, usually shortened to MDF, is an engineered wood sheet material.
Instead of being made from layers of solid timber or large wood particles, MDF is manufactured from wood fibres. These fibres are combined with resin and other additives before being formed into panels under heat and pressure.
The result is a board with a very consistent structure. Because the fibres are fine and evenly distributed, MDF has a smooth surface and relatively uniform properties throughout the panel.
What does MDF stand for?
MDF stands for Medium Density Fibreboard. The name describes the material rather than a particular brand or manufacturer.
Is MDF made from wood?
Yes. MDF is a wood-based product made from wood fibres. However, it is not the same thing as a solid piece of natural timber. The wood has been processed into fibres before being formed into the finished board.
MDF in 30 seconds.
WHAT
Engineered wood
MDF is an engineered wood-based sheet material.
MADE FROM
Wood fibres
Refined wood fibres are combined with resin and additives.
FINISH
Smooth surface
The consistent surface is particularly useful for painting.
GRAIN
No conventional grain
MDF does not have the grain pattern of solid timber.
USES
Furniture & joinery
Commonly used for cabinets, shelving and interior projects.
MACHINING
Easy to machine
MDF can be cut, drilled and routed with suitable tools.
WATER
Not waterproof
Standard MDF is not designed for prolonged exposure to water.
CHOICE
Many thicknesses
MDF is available in a range of board thicknesses.
CONSTRUCTION
What is MDF
made from?
MDF is manufactured using wood fibres rather than conventional solid timber boards.
01
Wood fibres
Wood is processed into fine fibres which form the main structure of the board.
02
Resin
Adhesive resin helps bind the fibres together.
03
Additives
Different products can contain additives selected for particular performance characteristics.
04
Heat & pressure
The prepared fibres are compressed under controlled heat and pressure to form the panel.
MANUFACTURING
How is MDF
made?
MDF production begins with suitable wood material that is processed into fibres. The fibres are prepared and combined with resin and other materials before being formed into a fibre mat.
Heat and pressure are then used to consolidate the material into a dense panel. The finished board can subsequently be trimmed and processed into standard sheet sizes.
This manufacturing process gives MDF one of its defining characteristics: a relatively uniform structure without the knots and natural grain variations found in solid wood.
MDF PROJECT FINDER
What are you
using MDF for?
Select a project to see why MDF can be useful for different applications.
MDF for furniture
MDF is popular for furniture because of its smooth, consistent surface and suitability for painting, machining and routing. Thickness should be selected according to the construction and intended use.
MDF for shelving
MDF can be useful for shelving and storage projects. Consider thickness, shelf span, loading, support and the environment in which the shelving will be used.
MDF for cabinets
MDF is widely used for cabinets, cupboards and wardrobes. Its smooth surface makes it particularly suitable where a painted finish is required.
MDF for wall panelling
MDF can be used for decorative wall panelling and interior features. Thin or thicker boards can be selected depending on the design and installation.
MDF for routing and profiles
MDF is frequently selected for routed shapes, profiles, templates and machined components because its consistent structure allows detailed machining.
MDF for displays
MDF can be useful for display units, counters, shopfitting and fabricated interior components, particularly where a smooth painted finish is wanted.
TYPES OF MDF
MDF isn't
just one board.
Different MDF products are available for different environments and applications. Always check the specification of the particular board rather than assuming all MDF products have identical properties.
01 / STANDARD
Standard MDF
General-purpose MDF commonly used for furniture, cabinetry, shelving, joinery and interior projects.
02 / MOISTURE
Moisture Resistant MDF
Manufactured to provide improved resistance to moisture compared with standard MDF. It is not automatically equivalent to waterproof board.
03 / FIRE
Fire Rated MDF
Specialist MDF products are available where particular fire-performance characteristics are required.
04 / VENEERED
Veneered MDF
MDF with a real wood veneer surface, combining the consistent MDF core with a natural timber appearance.
05 / COLOURED
Coloured MDF
Specialist boards are available with coloured cores or surfaces for decorative and design applications.
06 / SPECIALIST
Specialist MDF
Other specialist MDF products can provide particular characteristics for specific applications.
MDF THICKNESS GUIDE
Which MDF
thickness?
MDF is available in a wide range of thicknesses. The correct thickness depends on the application, dimensions, support, loading, machining and desired appearance.
3mm
Thin MDF
Backing panels, templates, modelling and lightweight applications.
6mm
Light panels
Backs, smaller components, templates and lighter projects.
9mm
Intermediate
Panels, furniture components and suitable interior projects.
12mm
General purpose
Cabinet components, furniture and general joinery.
15mm
Furniture
Furniture and joinery applications where additional thickness is useful.
18mm
Popular choice
Furniture, shelving, cabinets and substantial interior components.
22mm
Thicker board
Furniture and applications where a more substantial panel is required.
25mm
Heavy panel
Projects requiring a thicker MDF panel, subject to design requirements.
MDF VS OTHER SHEET MATERIALS
MDF vs plywood vs chipboard.
| Feature | MDF | Plywood | Chipboard |
|---|---|---|---|
| Construction | Wood fibres | Layers of wood veneer | Wood particles |
| Surface | Very smooth | Depends on face veneer | Generally more textured |
| Painting | Excellent with suitable preparation | Good depending on face | Depends on product and finish |
| Routing | Very suitable | Suitable with appropriate tooling | More limited |
| Furniture | Very commonly used | Very commonly used | Commonly used |
| Moisture | Grade dependent | Grade dependent | Grade dependent |
MDF EXPLAINED
Advantages &
disadvantages.
MDF is popular for good reasons, but it is not the best material for every project. The environment and intended use should always be considered before selecting a board.
Why choose MDF?
- Smooth, consistent surface
- Excellent base for many painted finishes
- No natural knots or conventional wood grain
- Can be cut, drilled and routed
- Available in many thicknesses
- Useful for furniture and cabinetry
Things to consider
- Standard MDF is not waterproof
- It can be relatively heavy
- Edges generally need appropriate preparation
- Dust control is important when machining
- The correct grade should be selected for the environment
- Fixing methods should suit the material and application
WORKING WITH MDF
What can you
do with MDF?
MDF is particularly popular because it is relatively straightforward to work with using suitable woodworking equipment and techniques.
Can MDF be painted?
Yes. MDF is widely used for painted furniture, cabinets, shelving and decorative joinery. The surface should be properly prepared and the edges may require additional preparation before finishing.
Can MDF be cut?
MDF can be cut using suitable woodworking tools. As with other engineered wood products, appropriate dust extraction and suitable personal protective equipment are important.
Can MDF be routed?
MDF is frequently used for routed shapes, profiles, templates and decorative components because its consistent structure is suitable for machining.
Can you screw into MDF?
Screws can be used with MDF when suitable fixing methods, pilot holes and edge distances are considered. The appropriate technique depends on the project.
Is MDF good for shelves?
MDF can be suitable for shelving. Thickness, shelf span, support and expected loading should all be considered when designing the shelf.
Is MDF good for cabinets?
MDF is widely used for cabinets and cupboards, particularly where a smooth painted finish is required.
EXPLORE MDF
More MDF
guides & options.
Browse MDF Sheets →
Explore the MDF range available from Plywood Etc.
MDF vs Plywood →
Compare the characteristics and uses of MDF and plywood.
9mm MDF →
Explore a popular intermediate MDF thickness.
12mm MDF →
A useful thickness for many furniture and joinery projects.
18mm MDF →
A widely used thickness for furniture, shelving and cabinetry.
6mm MDF →
Thin MDF for lighter panels and suitable projects.
MDF QUESTIONS
What people
ask about MDF.
What is MDF?
MDF stands for Medium Density Fibreboard. It is an engineered wood-based sheet material made from refined wood fibres bonded with resin and compressed under heat and pressure.
What does MDF stand for?
MDF stands for Medium Density Fibreboard.
Is MDF real wood?
MDF is a wood-based engineered material made using wood fibres, but it is not a solid piece of natural timber. The wood has been processed into fibres before being formed into the finished board.
Is MDF waterproof?
Standard MDF is not waterproof and should not be assumed to be suitable for prolonged exposure to water. Specialist moisture-resistant MDF products are available for appropriate applications.
Is MDF moisture resistant?
Some MDF products are specifically manufactured to provide improved moisture resistance. These products should not automatically be treated as waterproof, and their specification should be checked for the intended environment.
Is MDF stronger than plywood?
MDF and plywood have different structures and characteristics, so there is no single answer that applies to every application. Plywood is often selected where its layered construction and strength characteristics are advantageous, while MDF is popular where a smooth, consistent surface and easy machining are priorities.
Is MDF good for furniture?
Yes. MDF is widely used for furniture because of its consistent surface, machinability and suitability for painted finishes.
Is MDF good for shelving?
MDF can be suitable for shelving. Thickness, span, support and expected loading should all be considered when choosing the board.
What thickness MDF should I use?
The correct thickness depends on the application, dimensions, support, loading and desired appearance. Common furniture and cabinetry projects frequently use thicker MDF such as 15mm or 18mm, while thinner boards can be suitable for lighter applications.
Can MDF be painted?
Yes. MDF is particularly popular for painted furniture, cabinets, shelving and interior joinery because of its smooth and consistent surface.
Can MDF be cut and routed?
Yes. MDF can be cut, drilled and routed using suitable woodworking tools. Appropriate dust extraction and protective measures should be used when machining MDF.
What is 18mm MDF used for?
18mm MDF is commonly considered for furniture, shelving, cabinets, cupboards, wardrobes and other substantial interior components.
Ready to choose your MDF?
Explore MDF sheets from Plywood Etc in a range of thicknesses and options for furniture, shelving, cabinetry and other projects.