MDF or Solid Wood Wall Panelling: How to Choose

The short answer

If your panelling is going to be painted, sits on a dry internal wall, and you want crisp, seamless, grain-free results, moisture resistant MDF is the better choice for the vast majority of homes. It is stable, cuts cleanly, and takes paint beautifully.

Solid wood earns its place when the panelling will be stained, oiled or left natural, when it needs to take knocks in a busy hallway or boot room, or when it is going somewhere genuinely damp. Neither material is a compromise. They simply fail in different ways.

Why MDF suits most living rooms and hallways

MDF has no grain and no knots, so once filled and painted the wall reads as one surface rather than a collection of boards. It also does not move seasonally, which matters more than people expect. A room that swings from a cold snap to a well used woodburner will open up mitred joints in pine within a year, while MDF stays put.

Ask for MR (moisture resistant) MDF as standard rather than plain white board, and make sure all cut edges are sealed before painting, because raw MDF edges drink paint and fluff up.

• Typical build up: 18mm base panels or a battened frame, with 9mm to 12mm mouldings on top
• Primed MDF saves a coat but still needs the edges properly sealed
• Fixed with grab adhesive plus pins into studs or battens, filled, caulked and sprayed or brushed
• Poor in standing water: a leak under a bay window will swell MDF and it will not recover

When solid wood is worth the extra

Choose timber if you want to see the grain. Oak, ash or a good tulipwood will give you something MDF cannot fake, and it can be sanded back and refinished in ten years rather than replaced. It is also the sensible option for a downstairs loo or utility where splashes are likely.

The trade off is movement and preparation. Timber needs to sit in the room for around a week before fixing so it settles to the humidity it will live in, and knotty pine needs a proper knotting solution before primer or the knots will bleed yellow through white paint within a season.

• Best for: stained or oiled finishes, bathrooms, boot rooms, boarded tongue and groove looks
• Expect some seasonal movement at joints, which is normal and not a defect
• Pine is cheapest but knotty; tulipwood paints far better if you want painted timber

Check the wall first, especially in older Letchworth homes

A great many houses around Letchworth, Baldock and the older parts of Hitchin were built between roughly 1905 and the 1930s with solid brick walls and no cavity. Those external walls run cold, and if you batten and panel one without thought you can create a pocket where condensation forms behind the boards. On a solid external wall we would either fix directly with a suitable adhesive, or batten with a ventilated gap and insulated backing, rather than sealing up damp air.

Internal walls and chimney breasts are far more forgiving. Older properties often have lath and plaster or uneven plaster too, so a battened frame is usually worth it to get a flat, plumb face. Check for cables and pipes before anything goes into the wall, and think about where skirting, radiator pipes and sockets land before you settle on a panel height.

Cost and how to decide

As a rough guide, painted MDF panelling supplied and fitted tends to land somewhere around 90 to 150 pounds per square metre depending on the design, wall condition and the paint finish, with hardwood typically half again to double that. A single chimney breast is usually a day's work; a full room with a dado and decorating is several. Prices depend heavily on access, plaster condition and how much making good is needed, so treat those figures as a starting point rather than a quote.

If you are undecided, decide on the finish first. Painted means MDF unless the wall is damp. Natural or stained means timber. That one question settles it more often than any comparison of the materials themselves.