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Internal doors

Walnut internal doors

Walnut internal doors are almost always engineered — a real walnut veneer over a stabilised core, because solid walnut at door sizes is rare and expensive. Walnut reads darker and browner than oak, with paler sapwood streaks running through it, and unlike most timbers it lightens in daylight rather than darkening.

In this range
8 doors
Guide price from
£115.20 inc VAT

Walnut is the timber people choose when they want the door itself to be the thing you notice. It is darker than oak, browner than it too, and the grain is more obviously figured — swirls and streaks rather than the long straight rays of a quarter-sawn oak leaf. In a hallway of white walls it does most of the decorating on its own.

It is also the timber most often bought on a single photograph, which is where the disappointment comes from. Walnut varies more from leaf to leaf than oak does, and it does not stay the colour it arrives. Both of those are worth knowing before the doors are on the landing rather than after.

8 doors

Prices are guide prices including VAT, taken from the smallest size and plainest finish of each door. They are not an offer to sell — confirm the price for your size and finish before ordering.

Walnut or oak?

These are the two timber faces most internal door ranges are built around, and the choice is usually made on colour alone. Colour is the least reliable part of it, because neither timber stays where it starts.

The differences that show up after the doors are hung
WalnutOak
ColourMid to dark chocolate brown, often with grey or purple in itPale honey through to mid tan
GrainFigured and variable — swirls, streaks and visible sapwoodStraighter, with medullary rays where it is quarter-sawn
How it agesLightens and mellows in daylightDarkens and warms in daylight
Variation across a setHigh — expect leaves to differ noticeablyModerate
Usually sold asEngineered veneer over a stabilised coreEngineered or solid
Typical costHigherLower
SuitsRooms where the door is meant to be a featureRooms where the door should read as joinery

Walnut lightens. Plan for it

Most timber darkens with light and age. Walnut is the well-known exception: ultraviolet light pulls colour out of it, so a walnut door mellows from the deep brown it arrives as toward a warmer, lighter, redder brown. It is a slow change and, to most people, an improvement.

It becomes a problem in exactly one situation, and it is a common one. A door on a sunlit landing and a door in a north-facing box room will not still match each other after two years. The same goes for a leaf left standing against a wall in the sun while the rest of the set is being fitted.

Two practical consequences. Order the doors for a floor together and hang them together, so they age at broadly the same rate. And if you are matching new doors to walnut joinery that has been in the house for years, expect the new ones to look darker at first and to close the gap over time — matching them on day one usually means over-correcting.

Finishing walnut

An unfinished walnut door is raw veneer and needs sealing on every surface, for the same reason an unfinished oak door does: bare timber takes moisture out of the air and moves. The top and bottom edges are the two everybody misses, and they are usually the two the manufacturer names in its guarantee conditions. Read the finishing instructions supplied with the door before you open a tin.

What differs from oak is the choice of product. Oil deepens walnut and makes the figure much more obvious; a clear lacquer holds it closer to the colour you saw in the showroom. Neither is more correct, but they land in very different places, so try whichever you have chosen on an offcut or on the top edge before you commit the faces.

Bear in mind that a veneer is thin. Sand lightly and along the grain, and stop well short of anything that could be called stripping — there is no second attempt underneath.

What goes next to it

Walnut is dark enough that the ironmongery shows. Polished chrome and satin nickel both give a deliberate cool contrast against the brown. Matt black is the quieter option and tends to disappear into the door rather than sit on it. Antique bronze and aged brass sit closest to the timber itself, which reads as the most traditional of the three.

The other thing to settle is the architrave and skirting. Walnut doors in a house with white-painted trim give you a hard frame around each leaf, which suits the door being a feature. Walnut doors in walnut-veneered linings read as one continuous piece of joinery and cost considerably more to do properly. Decide which of the two you are doing before ordering, because the lining is the part that is awkward to change afterwards.