18mm MDF

MDF 18mm is a medium density fibreboard used across a wide range of interior projects, from furniture and wall panels to decorative and technical applications. The panel has no knots or grain, which means you can rout, drill, and profile it in any direction without tearing the surface. 18mm MDF sheets take paint and primer easily, creating an even, smooth finish that looks the same across every panel. Professionals trust it for steady performance and clean results every time.

What is MDF 18mm? 

MDF 18mm is made from refined wood fibres and modern resins under heat and pressure. The 18mm MDF sheet offers predictable machining with less tool chatter and fewer surprises. Choose quality materials, get longer-lasting results: with 18mm MDF, joints line up, paint lays down evenly, and finished work looks the part. The 18mm MDF sheet delivers a flat, consistent surface that saves time on preparation and finishing.

What is the 18mm MDF sheet used for? 

• For making furniture and shelves.
• For kitchen units and cupboard doors.
• For wall panels and room dividers.
• For desks, tables, and worktops.
• For wardrobes and storage.
• For feature walls and screens.
• For shop fittings and display units.
• For exhibition stands and trade shows.
• Moisture resistant boards suit bathrooms and kitchens.
• Fire rated boards work well in service areas.
• As a base for paint, veneer, or laminate.
• As extra support for interior elements that need a stable and reliable board in dry rooms.

Types of 18mm MDF

Every 18mm MDF board has its role to play. The range covers everything from standard panels for everyday joinery to moisture resistant and decorative sheets for specialist interiors.

• A standard 18mm MDF sheet is a go-to material for many workshop builds. It is often used for furniture, shelves, and wall panels, offering a flat, smooth surface that cuts easily and leaves clean edges. Made for dry interiors, it delivers steady strength and a tidy finish for joinery and decorative work.
• 18mm lightweight MDF is used where easy handling and reduced weight are important. It keeps the smooth finish of standard MDF but has a lower density, which makes it easier to lift, cut, and install. Suitable for ceilings, displays and decorative joinery where quick fitting and reduced load are important.
• 18mm moisture resistant MDF is designed for rooms that deal with steam or splashes. It has a moisture resistant core that helps prevent swelling, making it reliable for kitchens, bathrooms and utility areas.
• Fire Rated 18mm MDF (Euroclass B) is specified where building codes require certified fire resistance. It performs like regular MDF but has been tested for flame retardancy and dimensional stability in dry interior settings.
• 18mm White Melamine Faced MDF has a smooth white coating on both sides. It gives a bright and clean look without any painting required. It is a smart option for wardrobes, shelves, wall cladding, and contemporary furniture projects. You will also find textured MDF finishes in black, grey, and white within the range, and for premium decorative options we also stock the Finsa 12Twenty collection.
• Medite Tricoya Extreme 18mm MDF is a high-performance board designed for demanding conditions. It works like regular MDF but is much stronger and made to last even in tough environments. The board resists moisture, rot, and fungal decay, keeping its form even outdoors or in humid spaces.
• Bead and Butt 18mm MR MDF boards, primed and long grooved, add depth and style to plain walls and feature panels. The grooves run evenly along the surface, creating clean architectural lines. Each board is factory primed and ready for painting. The long edges finish on a half-groove, allowing adjoining sheets to align neatly for a seamless look.
• This 18mm moisture resistant V-Grooved MDF board adds a clean, modern touch to walls and ceilings. The grooves run evenly along the sheet for a neat panel effect. It is already primed, so you can paint and fit it right away.

Available sheet sizes: 2440 x 1220mm (8’ x 4’); 3050 x 1220mm (10’ x 4’); 3050 x 1525mm (10’ x 5’); 3660 x 1830mm (12’ x 6’).

Benefits of 18mm MDF board 

• 18mm MDF offers a reliable mix of strength and workability.
• The thicker board provides extra support and keeps a stable shape during fitting and everyday use.
• The 18mm MDF sheet has a fine, even texture that gives clean cuts and solid fixing points. It sands smoothly and holds paint or primer well, spreading the colour evenly across wide surfaces.
• MDF 18mm is dense and smooth, with no knots or grain. You can drill it, shape it, and join it in any direction. The edges stay clean, and the surface stays flat.
• The boards are strong and dependable under tools. Professionals appreciate their stability and solid feel, while beginners find them straightforward to work with once fixed in place.
• Designers and joiners value how versatile it is. You can laminate it, wrap it, lacquer it, or keep it ready for priming. The surface stays smooth, and the edges remain firm. The result looks refined without the extra cost of solid wood.

Why choose our MDF 18mm sheets? 

• Sheet Materials Wholesale keeps a broad choice of MDF boards in multiple sheet sizes, so you can find the right finish and thickness in one place without delays or extra suppliers.
• A complete range of 18mm MDF boards is available with trade discounts. Each type comes in different sizes, so it is easy to match the material to your project.
• All 18 mm MDF sheets are sourced responsibly and available with FSC certification, where the FSC mark is shown.
• Fast nationwide delivery is available, with next day options in many areas. Orders arrive carefully packed and on time. Delivery is offered to both residential and trade customers, making the service suitable for DIY projects as well.
• Prices stay fair and realistic. 18mm MDF panels are available with trade discounts. You receive professional grade material without paying extra, whether you purchase one board or a bulk order for production.
• Share your project details and quantity, and the Sheet Materials Wholesale team will help you choose the right material for your task and prepare a quick quote that combines high quality, low prices, and reliable UK service.

Pick your ideal 18mm MDF sheet, drop it in your basket, and we will get it delivered to your door. Order in bulk at fair prices with easy minimum quantities and steady availability. 

FAQ

What does 18mm MDF weigh?

A standard 18mm MDF sheet weighs about 37-40 kg. For an easier option to handle, try the 18mm lightweight MDF.

What size screws for 18mm MDF?

Builders usually choose screws made for MDF or chipboard. Pick a length that gives a firm hold in the supporting surface without going too close to the edge. Always drill a small pilot hole first to keep the board clean and crack free.

How much is 18mm MDF?

Prices depend on the type and how many sheets you order. Our 18mm MDF range is always priced fairly, with reliable quality and good stock levels.

How to cut 18mm MDF?

Use any saw with fine teeth. Secure the sheet to prevent movement, mark a line, and proceed to cut slowly with a steady hand. Once done, sand the edge lightly to keep it smooth.

Where to buy 18mm MDF?

You can buy 18mm MDF boards online at Sheet Materials Wholesale. We offer different sizes and fast delivery across the UK.