What you're getting — and how to finish it properly.
Our MDF and pine wall panelling is supplied in a specific surface state, designed for you to prime and paint at home. This page explains exactly what that state is, what paint types work best, how durable the result will be, and what your options are if you ever need to refinish a panel after it's been on the wall.
Last updated & effective: 25 June 2026
Surface state on delivery
What arrives at your door, and what we mean by "ready to paint."
Standard MDF panels
The majority of our wall panelling range — shaker-style kits, tongue & groove panels, and build-your-own individual slats — is supplied in a raw, unprimed state. The panels are precision-cut from premium-grade MDF board and machine-sanded to an approximately 120-grit finish, leaving a clean, smooth surface that is flat to the touch and free from major imperfections.
We do not apply any factory primer, lacquer, oil, wax, or coating before dispatch. This is intentional: it gives you full control over the final colour and sheen, and ensures the primer you apply bonds directly to the bare board rather than over an incompatible factory coating.
The surface will have a very slight texture — typical of MDF at this grit level — which a coat of primer will further seal and smooth before top-coating.
Pre-primed products
A small selection of our range — specifically our Cheshire Mouldings MWPKT-2 and MWPKT-4 ready-to-paint moulding kits — is supplied pre-primed at the factory. These products are clearly described as "pre-primed" on their product pages. The primer applied is a standard white MDF primer-undercoat, water-based, and intended to receive one or two coats of your chosen paint directly without the need for a separate priming stage.
Even on pre-primed products, we recommend a light sand with 180-grit sandpaper before top-coating if the primer coat feels slightly rough or if the panels have been in transit for longer periods. This is a precaution rather than a requirement, and is standard practice for professional painting results on any pre-primed board.
Pine mouldings and accessories are supplied unprimed and uncoated, as bare pine is intended to be primed, painted, or stained by the customer.
Paint and lacquer types — what to use
MDF has different porosity characteristics from natural timber, which affects how it accepts paint. Here's what works well and what to avoid.
Water-based eggshell or satin
Our most recommended finish for MDF wall panels. Water-based eggshell gives a low-sheen, washable surface that sits beautifully on flat boards, holds colour accurately, and is much easier to apply without brush marks than oil-based equivalents. Brands like Farrow & Ball estate eggshell, Dulux Trade Aquanamel, Little Greene Intelligent Eggshell, and Frenchic Trim paint all perform well on primed MDF.
RecommendedMatt emulsion (walls & ceilings grade)
A standard water-based matt emulsion — including popular brands like Dulux, Crown, and Johnstone's — works perfectly well on primed MDF panels when applied over a purpose-made MDF primer. The matt finish is softer in appearance and suits period and country-style interiors particularly well. Matt emulsions are less washable than eggshell, so for high-traffic areas such as hallways or children's rooms, eggshell is the better choice.
SuitableOil-based gloss and satinwood
Traditional oil-based paints (alkyd-based gloss or satinwood) are compatible with MDF and produce a very hard, durable, highly reflective finish. They take significantly longer to dry (up to 16–24 hours between coats) and require solvent-based cleaning. On flat panels, oil-based gloss can show brush marks unless sprayed or applied by experienced hands. If you want a high-gloss result, a water-based high-gloss eggshell is generally a more forgiving choice for DIY application.
CompatibleChalk-finish and mineral paint
Chalk-style and mineral paints (Annie Sloan Chalk Paint, Frenchic Original, Rust-Oleum Chalked, and similar) bond well to MDF without a dedicated primer coat in many cases, though we still recommend a light sealing coat on raw MDF edges where the board is most porous. These paints produce a flat, vintage-style, ultra-matte finish that can be waxed or sealed for added protection. They are not as hard-wearing as eggshell on their own, so finish with a water-based varnish or wax coat for panels in busy rooms.
Suitable with sealingWater-based acrylic varnish / lacquer
A clear water-based acrylic lacquer or varnish can be applied as a top-coat over any paint to increase durability and make the surface more cleanable. This is particularly useful in kitchens, children's rooms, and hallways where the panels are more likely to need wiping down. Choose a product rated for interior woodwork; avoid exterior lacquers, which have additives designed for UV and moisture exposure that can yellow or cloud indoors over time.
Optional top-coatWhat to avoid on MDF
Do not apply neat, undiluted water-based emulsion directly to raw MDF without priming first — the water in the paint will raise the surface fibres and create an uneven texture that is difficult to sand back. Solvent-free natural oil finishes (linseed, tung oil) are not recommended for MDF as they do not penetrate or protect engineered wood in the same way they do on solid timber. Avoid any paint or product not rated for interior woodwork.
AvoidRecommended finishing process
Follow these steps for the best possible painted result on raw MDF panels.
Light pre-sand (optional but recommended)
Before priming, lightly scuff the panel surfaces with 180-grit sandpaper to remove any dust nibs or very minor handling marks. Wipe clean with a dry cloth. This step is optional on freshly delivered panels but worth doing if panels have been stored before use.
Seal the edges first
MDF edges (end-grain) absorb primer at a much higher rate than the flat faces. Apply one thin, even coat of MDF primer or general-purpose wood primer to the edges first and allow to dry fully. On exposed edges, a second coat is advisable before moving to the faces.
Prime the faces
Apply one full coat of primer to the panel faces. Avoid over-brushing; a smooth, even application is better than a thick one. Allow to dry fully according to the primer manufacturer's instructions — typically 1–2 hours for water-based products in normal domestic conditions.
Sand the primer coat
Once the primer is fully dry, lightly sand with 180–240-grit sandpaper. The primer will have raised the surface fibres slightly, and sanding at this stage removes them, leaving a surface that is glassy-smooth and ready to take paint without any fibre texture showing through.
Apply top-coat paint
Apply your chosen paint in thin, even coats. Two coats of eggshell or satinwood are sufficient for a full, opaque finish in most colours. Very deep or very pale colours may benefit from a third coat. Allow each coat to dry fully before applying the next; do not attempt to re-coat too quickly or the finish may drag.
Optional: seal with varnish or lacquer
For panels in high-traffic areas or kitchens, apply one or two coats of clear interior wood varnish (water-based, satin or semi-gloss) over the cured top-coat. This adds meaningful scratch and scuff protection, and makes the surface easier to clean. Allow the top-coat paint to cure fully — ideally 48–72 hours — before applying varnish over it.
Important notes on technique
- Paint panels before installation where possible — it is significantly easier to get a clean, even finish on a flat panel lying on a workbench than on a panel already fixed to the wall.
- Use a short-pile foam roller for large flat areas and a small brush for edges and corners. Rollers produce a much finer finish on MDF than brushes alone.
- Work in a room at 10°C or above. Water-based paints do not cure properly in cold conditions and may remain tacky or crack if applied below this threshold.
- Fill any pin-nail holes or adhesive gaps with a flexible decorators' filler before priming, then sand smooth once dry.
- Touch-up paint is far easier to apply when you have leftover paint from the original job. Label your tin with the room and panel colour, and store it sealed and upright in a cool, frost-free location.
Durability & surface properties
How our panels perform after they've been primed, painted, and installed — including surface hardness, scratch resistance, and what to expect over time.
Surface hardness
MDF is a denser, more uniform board than standard softwood timber, but it is not as hard as solid hardwood or engineered stone. The surface hardness of a painted MDF panel is largely determined by the type of paint used rather than the board itself.
Water-based eggshell and satinwood paints cure to a reasonably hard, resilient surface that resists ordinary everyday contact — furniture brushing against it, light cleaning, and the normal wear of a domestic wall. Oil-based alkyd paints cure harder still, providing increased resistance to impact and surface marking, though they are more prone to yellowing over time, particularly in rooms with low natural light.
Scratch resistance
Scratch resistance on a finished MDF panel is a function of the top-coat paint and any additional clear-coat applied. Raw, unprimed MDF is susceptible to surface marking and should be handled with care during installation. Once primed and painted, the surface is substantially more resilient.
In practical terms, a properly primed and painted Lunaire Works panel will perform comparably to a factory-painted door or skirting board of the same finish type. It will resist light scuffing and incidental contact, but sharp or abrasive objects dragged across the surface will leave marks, as they would on any painted interior surface.
| Property | Matt emulsion | Water-based eggshell | Oil-based satinwood | + clear lacquer |
|---|---|---|---|---|
| Surface hardness | Low | Moderate | High | High–Very High |
| Scratch resistance | Low | Moderate | Good | Very Good |
| Washability | Poor | Good | Very Good | Very Good |
| Drying time (per coat) | 1–2 hrs | 2–4 hrs | 12–24 hrs | 2–4 hrs |
| Full cure time | 24–48 hrs | 48–72 hrs | 7–14 days | 48–72 hrs |
| Recoatability | Excellent | Excellent | Good | Good |
| Yellowing risk (low-light rooms) | None | None | Yes — moderate | None (water-based) |
UV resistance
How our panels respond to natural light, and what to expect in sunlit rooms over time.
Our panels are designed exclusively for interior use in domestic and commercial properties within the United Kingdom. They are not rated for outdoor use and should not be installed in any location exposed to direct weather.
For interior use, UV exposure from natural light through windows is a relevant consideration in bright, south-facing rooms, particularly in summer. MDF as a substrate is not inherently UV-sensitive, but the paints and finishes applied to it are.
White and pale colours are most susceptible to yellowing in rooms with high natural light exposure, particularly if oil-based alkyd paints are used. This is a well-documented characteristic of alkyd chemistry, not a product defect. Water-based acrylic paints do not have the same yellowing risk and are the better choice for bright, naturally lit rooms.
Saturated and mid-tone colours may experience very gradual fading over a number of years in intense natural light — this is a property of the pigments in the paint rather than the MDF board itself. High-quality paint brands (such as Farrow & Ball, Little Greene, or Dulux Heritage) use higher pigment concentrations with better lightfastness ratings, which reduces this effect.
The MDF board itself does not degrade, discolour, or warp under normal indoor UV exposure. Any colour change on a finished panel over time will originate in the paint or top-coat, not the substrate.
UV performance by finish type
- Water-based acrylic eggshell / satinwood: good UV stability, no yellowing. Mild colour fade over many years in intense sunlight — particularly in very pale shades. The preferred choice for bright rooms.
- Oil-based alkyd (gloss / satinwood): good scratch hardness but moderate yellowing risk in UV light, especially in white or off-white shades. Not recommended for very bright, south-facing rooms.
- Chalk and mineral paint: generally good UV stability when sealed, but unsealed chalk paint may show more fading than a sealed eggshell finish over a long period.
- Interior clear lacquer: adds a UV-stable barrier that helps protect underlying paint colour from fading and improves overall surface performance in naturally lit spaces.
Moisture, humidity & surface protection
MDF and moisture: what the material can tolerate, where it can be used, and what surface treatments help protect it in higher-humidity environments.
Standard MDF panels
Standard MDF panels are not moisture-resistant. They should not be used in rooms or locations where the board will be exposed to water, condensation, or humidity levels above approximately 65–70% on a regular basis. In practice, this means our standard panels are suitable for living rooms, bedrooms, hallways, home offices, and other typical domestic spaces.
In bathrooms and kitchens — where steam and occasional splashing are likely — we strongly recommend our moisture-resistant (MR) MDF range instead. MR MDF contains a moisture-inhibiting resin throughout the board, making it significantly more tolerant of the humidity and occasional water contact encountered in these environments.
Moisture resistance is not waterproofness. Even MR MDF should not be installed where it will have direct, sustained contact with standing water — such as inside a shower enclosure or directly behind a sink with no sealed splashback in between. It is moisture resistant, not impermeable.
Surface treatments for humid spaces
If you are installing standard MDF panelling in a room that occasionally experiences higher humidity — such as a hallway adjacent to a bathroom, or a utility room — painting with a water-based satinwood or eggshell (rather than a matt emulsion) and finishing with a clear interior varnish provides meaningful added protection against moisture ingress through the painted surface.
The key is to seal the board on all six faces — both faces, both long edges, and both cut ends. Exposed MDF edges are particularly vulnerable to moisture uptake, and if an edge is left unprimed or unsealed in a humid environment, the board can swell and the paint can lift. On panels that have been cut to size on-site, always prime and seal the fresh cut-edges before they are fixed in position.
For our moisture-resistant MDF range, the same principle applies: prime and seal all edges as part of the finishing process. The MR chemistry in the board improves humidity tolerance, but it does not eliminate the need to seal the surface.
Refinishing options after installation
One of the most practical advantages of raw MDF panelling is that it can be repainted or refinished after it's been on the wall — without removing the panels.
Unlike factory-lacquered panels that can be difficult to re-coat without specialist preparation, our panels — once painted by the customer — can be refinished in exactly the same way as any other painted interior woodwork. The steps below describe how to handle the most common refinishing scenarios.
Changing the colour after installation
Lightly sand the existing painted surface with 240-grit sandpaper to degloss it and help the new paint adhere. Wipe dust away with a damp cloth and allow to dry. Apply a light coat of water-based primer (optional but recommended if the colour change is significant, especially from dark to light), then two coats of your chosen new colour in eggshell or satinwood. No need to strip back to bare MDF unless the existing paint is peeling or delaminating.
Touching up scuffs and marks
Small scuffs and marks can be touched up with the original paint using a small brush. The touch-up will be less visible if you feather the paint out at the edges rather than applying it as a hard-edged spot. For best results, have the original tin of paint stored correctly (sealed, frost-free) so the colour and sheen level is a perfect match. A touch-up with paint from a freshly purchased tin of the same product may appear slightly different until both areas have fully aged.
Repairing surface damage
If a panel has been dented, chipped, or has a deeper gouge, apply a flexible interior wood filler to the damaged area. Once dry, sand smooth, seal the repair with a spot coat of primer, then touch-up with your top-coat colour. If a panel is significantly damaged and cannot be repaired adequately in situ, individual panels can be removed and replaced — contact us at info@lunaireworks.com with your original order details and we will advise on obtaining replacement panels.
Full redecoration
Panels can be fully stripped and repainted as part of a wider room redecoration. There is no maximum number of times a well-installed panel can be refinished, provided the total paint build does not become so thick that it obscures the panel's profile detail. If paint build-up is significant after several redecoration cycles, a chemical paint stripper (applied carefully, following the manufacturer's instructions) can be used to take the panel back towards bare board, at which point the standard priming and painting process should be repeated in full.
What stays the same on a refinished panel
- The structural integrity of the MDF board is not affected by standard painting and repainting, provided the board was correctly installed and the environment is appropriate for the board type.
- The panel profile — shaker box, tongue and groove groove, or dado shape — is retained across multiple refinishing cycles unless excessive paint build-up is allowed to accumulate at corners and joints.
- The bond between panel and wall is not disturbed by repainting, provided you do not soak the surface with water during preparation (for example, using a wet sponge to wash the wall before repainting).
- Adhesive-fixed panels can generally be re-painted without any disturbance to the fixings. Nail-fixed panels are similarly unaffected — the nail holes can be refilled with decorators' filler as part of the refinishing process.
Finishing choices and your warranty
What is covered by our product and warranty policy, and what falls outside it.
Covered by our product policy
- Panels that arrive damaged, cracked, or with manufacturing defects in the board itself — regardless of what you intend to do with the surface.
- Panels that are not as described on the product page — for example, an incorrect dimension, thickness, or profile.
- Standard panels returned unused and unprimed within our 30-day return window, in their original condition.
- Pre-primed products (MWPKT range) where the factory primer coat is defective — for example, adhesion failure, incorrect coverage, or contamination visible before top-coating.
Not covered — customer finishing choices
- Surface defects (raised grain, fibre texture, uneven finish) that result from applying paint directly to raw MDF without a primer coat. Priming is a required step on all raw MDF and is clearly stated on every product page.
- Swelling, delamination, or board failure resulting from installing standard MDF panels in a wet or high-humidity environment where MR MDF was the appropriate choice.
- Colour change, fading, or yellowing of the customer-applied paint finish over time, which is a property of the paint product rather than the panel board.
- Scratches, scuffs, dents, or other surface damage resulting from use or handling after installation — these are wear characteristics of all interior painted surfaces, not manufacturing defects.
UK regulatory compliance & product safety
How our products, materials, and surface characteristics comply with UK law and relevant safety standards.
Material safety & formaldehyde emissions
The MDF and HDF used in our panels is sourced from suppliers holding CARB Phase 2 and EPA TSCA Title VI certification — internationally recognised standards for low formaldehyde emissions in composite wood products. In plain terms, our board stock is tested and certified to emit formaldehyde at levels well within internationally accepted limits for residential indoor environments.
Our suppliers also hold FSC chain-of-custody certification, confirming responsible sourcing from sustainably managed forests in line with environmental best practice under the UK Timber Regulation (UKTR), which replaced the EU Timber Regulation (EUTR) in Great Britain following the UK's departure from the European Union.
MDF dust generated during cutting and sanding is classified as a nuisance dust under COSHH (Control of Substances Hazardous to Health Regulations 2002). Always wear an appropriate dust mask (at minimum FFP2 rated) when cutting or dry-sanding MDF, and work in a well-ventilated space. A dust mask is included in the health and safety guidance on each product page.
Consumer rights & product descriptions
All product descriptions on our website are accurate, specific, and written in compliance with the Consumer Protection from Unfair Trading Regulations 2008 and the Consumer Rights Act 2015. Where a product is supplied unprimed, this is clearly stated. Where a product is supplied pre-primed, this is clearly stated. We do not use misleading descriptions or create false impressions about the surface condition in which our products are delivered.
All performance characteristics described on this page — including surface hardness ratings, scratch resistance levels, and UV performance descriptions — are indicative guides based on the general properties of the materials and paint types described. They are not manufacturer's warranties for the specific paint products you choose, which are subject to the terms and specifications of their respective manufacturers.
Paint compatibility guidance on this page reflects standard industry knowledge about paint adhesion to MDF. We do not endorse or receive commercial benefit from any specific paint brand mentioned.
Construction Products Regulation (CPR)
MDF and HDF board used in interior wall panelling falls within the scope of the UK's Construction Products Regulation framework for fire classification. Our standard MDF panels, once painted, behave in line with the general fire performance of Class D interior construction materials as referenced under BS EN 13501-1 (the UK and European fire classification standard for construction products). Our panels are not fire-rated, intumescent, or designed for use in applications where a certified fire performance class is required by Building Regulations (such as in fire compartmentation, stairwells, or certain commercial applications).
For standard domestic room panelling applications, our products are appropriate and consistent with the materials commonly used in similar interior decorating products across the UK. If you have a specific requirement for a certified fire-rated panel product, please contact us before ordering.
Registered company & trading details
Lunaire Works is a trading name of STERZEAL HATS LIMITED, a company registered in England and Wales. We display the following information in compliance with the Companies (Trading Disclosures) Regulations 2008 and the Electronic Commerce (EC Directive) Regulations 2002.
- Registered company nameSTERZEAL HATS LIMITED
- Company registration no.13249070
- VAT numberGB433989551
- EORI numberGB084160128000
- Registered address126 Newark Avenue, Peterborough, PE1 4NP England, United Kingdom
Questions about finishing your panels?
Our team has direct experience with priming, painting, and finishing the panels we make. If you're unsure which paint type to use, whether your room is appropriate for standard or MR MDF, or how to get the best result from a repaint, we're happy to help.
Get in touch
- Emailinfo@lunaireworks.com
- Phone+44 33 0043 9923
- Live ChatAvailable on the website during business hours
- Business HoursMon–Fri, 9:00 AM–5:00 PM (GMT, UK)
What to include when contacting us
- Your order number, so we can check the exact product and thickness you purchased.
- Which room the panels are for (living room, kitchen, bathroom, etc.) — this helps us advise on whether standard or MR MDF is right for your situation.
- The paint brand and type you are planning to use, or have already used — this is often the fastest route to solving a surface finish question.
- A photo if there is a visible issue with the surface — it is almost always the quickest way for us to understand and resolve the problem.
Ready to start your project?
Browse our full range of MDF wall panelling — made in Cambridgeshire, shipped free to anywhere in the UK.
Last updated & effective: 25 June 2026 | Lunaire Works is a trading name of STERZEAL HATS LIMITED (Company No. 13249070)
