Replacing Standard Skirting Boards and Architraves with Premium Deep-Moulded Timber

Skirting board height should relate to ceiling height. In a room with a 2.35m ceiling (standard modern build), a 120–144mm skirting is the correct scale. In a period property with a 2.6m ceiling, 150–175mm is appropriate. In rooms with 3.0m+ ceilings — Victorian reception rooms in Windsor and Maidenhead — 200mm and above begins to look correct. Standard 70mm skirting in a room with a 2.6m ceiling always looks inadequate: the eye perceives the proportion as mismatched even without identifying why.

Ogee profile has been the dominant traditional skirting profile in British interiors for 200 years — its S-curve and flat field suit Georgian, Victorian, Edwardian, and Arts and Crafts interiors equally. Torus profile (a half-round with a flat top) is simpler and suits both traditional and contemporary interiors. A modern pencil-round or bullnose profile with a flat face and rounded top edge suits contemporary interiors where a clean, minimal detail is appropriate. For period properties, we examine existing skirting profiles at the measuring visit and advise on appropriate replacements.

Skirting and architrave work as a pair, and upgrading one without the other rarely looks right. A deep 145mm skirting meeting a skinny 45mm builder's architrave produces an awkward junction at every door — the skirting arrives at the door frame taller than the trim it butts into, and the eye catches it immediately. As a working rule, the architrave should be at least half to two-thirds the visual weight of the skirting: a 120–145mm skirting pairs with a 70–95mm architrave, and a 175mm-plus period skirting wants a 95–120mm architrave with a properly moulded face.

The junction itself deserves a decision too. In most modern replacements the skirting simply dies into the edge of the architrave, which works cleanly when the architrave is thicker than the skirting — the skirting end grain is hidden against the architrave face. In taller period schemes, a plinth block at the foot of each architrave is the correct historical detail: a plain, slightly thicker block that both mouldings die into. It solves the thickness clash elegantly, protects the vulnerable foot of the architrave from vacuum cleaners and shoe scuffs, and instantly reads as considered joinery rather than off-the-shelf trim.

Around the door head, mitred corners must be tight and glued, not just pinned. A hairline at a door head mitre is at eye level and gets noticed every time the door is used — I glue, cramp and pin every head mitre, then fill and sand before priming.

For painted work — which is the overwhelming majority of skirting in Berkshire homes — moisture-resistant MDF is the material I recommend most often, and not as a cost compromise. Deep-moulded MR MDF boards are machined from a dense, uniform sheet, so the profile comes off the cutter crisp and identical along every length. There are no knots to bleed through the paint, no grain to telegraph, and critically no seasonal cupping or shrinkage: an 18mm MR MDF board fitted in January still sits tight against the wall in August. Primed boards up to 250mm deep are readily available in the classic profiles.

Softwood — usually redwood pine — is the traditional painted option and still has its place, particularly where a run must be machined to match an existing period profile and the client wants timber throughout. It costs a little more than MDF once you specify joinery-grade boards, and it demands knotting solution over every knot before priming, otherwise resin stains appear through the finished paint within a year or two.

Solid hardwood — oak, sapele, ash — is the specification for clear-finished or stained skirting where the grain itself is the feature. It is significantly more expensive in material and labour, needs careful acclimatisation on site before fixing, and every cut has to be right first time because filler shows in a clear finish. In practice it is chosen for hallways and principal rooms in higher-end schemes, with painted MR MDF continuing through the rest of the house.

In Victorian and Edwardian properties around Windsor, Ascot and Maidenhead, the right answer is often not a catalogue profile at all but a copy of what the house already has. Where original skirting survives in one room and has been ripped out of another — a common legacy of past kitchen and bathroom refits — I take a clean section or a profile-gauge tracing and have matching lengths run off. Many original profiles correspond closely to stock patterns still held by joinery mills; where they do not, a custom cutter can be ground for a modest one-off charge that is easily justified across a whole room or hallway.

Two details matter when matching. First, thickness: original nineteenth-century skirting is often 22–25mm thick, noticeably chunkier than the 15–18mm of modern stock, and a matched profile on a thinner board still looks wrong at the corners. Second, the built-up option: very deep period skirtings were frequently made as two or three stacked components — a plain board with a separate moulded capping — and replicating them the same way is often cheaper and easier to fit around wonky walls than machining one enormous board.

The removal stage is where an inexperienced hand does the expensive damage. Old skirting is rarely just nailed — decades of decorating means it is effectively glued to the wall by paint and caulk, and modern boards are usually bonded with grab adhesive. Levering a board off carelessly pulls plaster away in dinner-plate sized sections, and suddenly a trim job has become a plastering job.

The correct sequence is to score the caulk and paint line along the top edge of the board with a sharp knife first, breaking the bond between skirting and wall so the paint film cannot tear up the plaster with it. The board is then eased away progressively with a wide bolster and timber packers to spread the load, working along its length rather than prising hard at one point. Cut nails in older properties are pulled through the back of the board rather than hammered back. Even done well, expect some making good: small losses along the plaster line are normal and are filled before the new, deeper board goes on — one advantage of moving up in height is that the new board usually covers the scars of the old one entirely.

Removed hardwood boards in period homes are worth keeping. Sound Victorian pitch pine or oak skirting can be re-machined for repairs elsewhere in the house, and I always offer the offcuts back before anything goes in the skip.

How the new boards are fixed depends entirely on the wall behind them. On flat, sound modern plasterboard, a quality grab adhesive in vertical beads with a handful of discreet mechanical fixings gives a clean face with almost nothing to fill. On the soft lime plaster and out-of-flat masonry typical of older Berkshire houses, adhesive alone is not enough — boards are packed off the high spots, screwed to plugs in the masonry or to the original timber grounds where they survive, and the screw heads are counterbored, filled and sanded flush before priming.

Long runs need their joints planned. Boards join on a 45-degree scarf joint rather than a square butt, glued and pinned, because a scarf stays closed as the material moves where a butt joint opens into a visible dark line. On profiled boards I place joints away from sight lines — never centred on a chimney breast or directly opposite a doorway.

Internal corners are scribed, not mitred: one board runs into the corner square, and the mating board is cut to the exact negative of the profile so it laps over it. It takes longer than a mitre but it is the difference between corners that stay tight for decades and corners that crack open the first winter the heating runs hard. External corners are mitred, glued and pinned, with the sharp arris eased slightly so paint holds on the edge.

Skirting never gets fitted in an empty perfect room. Floor levels wander — in one Bracknell hallway the difference across four metres can easily be 15mm — and the board must be scribed to the floor, not packed level, otherwise a wedge of shadow opens under one end. With carpet, the board is fitted with the bottom edge just above the gripper so the fitter can tuck the edge neatly. With hard floors, the sequence reverses: flooring first, expansion gap left at the wall, skirting fitted afterwards to cover the gap. Retrofitting deep skirting over an existing hard floor means cutting the old caulk line and lifting the perimeter trim first.

Radiator pipes rising through the floor tight to the wall are the classic nuisance. The honest options are a scribed keyhole cut around each pipe, done cleanly with a hole saw and a slot; a small matching pipe box; or — during a wider renovation — rerouting the tails so they drop from the wall instead. What ruins the job is the ragged oversized notch stuffed with caulk. Low-level sockets and TV points sitting within the new, taller board line need moving up or boxing through, which is worth deciding at the survey rather than discovering on fitting day; a spark can shift a socket up the wall in under an hour while the room is already in disruption.

Deep-moulded skirting shows off its profile through the paint, which means the paint has to be good. My preferred route is boards primed in the workshop — all faces including the back, which seals the board against moisture drawn from the wall — then fitted, filled and caulked, then given two topcoats in situ. Water-based satinwood or eggshell is now the sensible default over traditional oil-based gloss: it stays white instead of yellowing, dries fast enough to double-coat in a day, and modern formulations are hard enough for skirting duty.

For the sharpest possible finish, spraying is the upgrade. A sprayed satin finish on deep-moulded boards, applied either in the workshop before fitting or masked and sprayed in situ, lays the paint into the quirks and coves of the moulding without brush marks pooling in the detail. It comes into its own on staircase runs and panelled hallways where long unbroken lengths would show every brush lap.

Caulking deserves its own sentence: a fine, tooled bead of flexible caulk at the wall line, painted over once cured, closes the last hairline and finishes the job. Thick smeared caulk hiding a lazy scribe is the signature of rushed work — if the fitting is right, the caulk line is barely there.

Using the standard double bedroom figure of £350–£600 fitted as the baseline, a realistic whole-house picture builds up quickly but predictably. Halls, landings and staircases cost more per metre than bedrooms — more corners, more scribing, and the awkward business of skirting raking up a stair string. Living rooms with bays, alcoves and chimney breasts sit somewhere between. Hardwood or fully sprayed specifications add to any of these figures, while doing several rooms in one visit brings the per-room cost down because setup, machining and priming happen once.

Sequencing matters as much as price. The ideal moment to replace skirting is after plastering and before final decoration and floor coverings — which is why it slots so naturally into a wider renovation. In an occupied, decorated house the work is still entirely feasible room by room; it simply needs honest expectations about touch-in decoration along the wall line above the new boards, particularly where the old skirting was shorter and left a band of unpainted plaster behind.

If the budget will not stretch to the whole house at once, do the hall, landing and principal reception first. Those are the spaces where deep skirting earns its keep visually, and bedrooms can follow later using the same profile so the house finishes coherent rather than piecemeal.

The mistakes I get called in to put right follow a pattern. Internal mitres instead of scribes, opening up into black lines within a year. Boards sprung to bowed walls with adhesive alone, now standing proud at one end. Profiles chosen from a photograph without checking scale — a moulding that looked elegant on a 120mm board can look fussy stretched to 195mm. Architraves left as builder-standard against new deep skirting. And paint applied straight over primer without filling pin holes and scarf joints, so every fixing point shows in raking light from a window or a floor lamp.

Cared-for skirting asks very little. Dust the top edge when cleaning, wipe scuffs with a damp cloth and mild detergent, and touch in knocks with the topcoat paint — keep the labelled tin. Expect to refresh the caulk line and repaint every five to eight years in busy areas, less often in bedrooms. In a house with young children or dogs, satin and eggshell finishes forgive scuffs far better than dead-flat paint, and a slightly deeper colour than the walls hides marks better than brilliant white. Done once and done properly, the boards themselves should never need touching again — skirting is a fit-and-forget upgrade, which is precisely why it is worth specifying well the first time.