Skirting boards are the frame of a room, and like any frame they take the knocks. Ours had a decade of vacuum-cleaner dents, shoe scuffs, and a long graze where a sofa had been dragged. The walls and floor were fine; it was the white line between them that made the room look tired. An afternoon, a tube of caulk, a small tub of filler, and the dregs of a tin of eggshell put a crisp edge back around the whole room, and it cost less than a sandwich.
Why the gap matters more than the scuffs
Most people repaint skirting and skip the one step that actually reads from across the room: the caulk line where the board meets the wall. Over years that joint cracks and shadows, and no amount of fresh paint hides a dark wandering gap. A thin bead of decorator's caulk, smoothed with a wet finger, turns that shadow into a single clean line. It is the difference between 'painted skirting' and 'new skirting'.
The scuffs themselves are easy. A scrape of fine filler, a sand flush when dry, and they vanish under the first coat. It is the geometry — the crisp meeting of three planes, wall, board, floor — that the eye reads as fresh, and the caulk is what delivers it.
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Filler, then a flush sand
Use a lightweight interior filler, not exterior or deep-gap stuff, which is overkill and slow to dry. Press it into each dent slightly proud, because filler shrinks as it cures and a flush fill becomes a shallow dish. Twenty minutes later it sands back flush with a worn 240-grit sheet folded over a cork block, leaving the original profile intact.
Vacuum the dust, wipe with a barely-damp cloth, and let it dry. Paint over dusty filler and it grins through the topcoat within a week. The cleanup is two minutes and it is the two minutes that decides whether the finish lasts.
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“It is the geometry the eye reads as fresh, and the caulk is what delivers it.” — Mira
Two thin coats, the right brush
A 38 mm angled brush is the whole toolkit. Eggshell, not gloss — gloss shows every imperfection and dates the room; eggshell is forgiving and modern. Lay the first coat thin, let it dry properly, knock back any nibs with the worn sheet, then lay the second. Two thin coats self-level into a soft sheen; one thick coat sags and holds brush marks forever.
We do not tape the board. Tape on skirting lifts the edge and bleeds underneath; a steady hand cutting in along the top is faster and cleaner once you have done two metres. The floor gets a strip of masking paper instead, because a drip on oak is a worse problem than a slightly human line at the top of the board.
- Lightweight interior filler — fast to dry, easy to sand.
- Decorator's caulk for the wall joint — the step everyone skips.
- Eggshell over gloss — forgiving, modern, hides small flaws.
- Two thin coats, sanded between, with a 38 mm angled brush.
How to do it
Clean and degrease.
Sugar soap along the whole run, rinse, dry. Paint will not key to a greasy, dusty board; this step is non-negotiable.
Fill and caulk.
Filler into the dents, proud, sanded flush when dry. Caulk the wall joint in short sections, smoothed with a wet finger.
First thin coat.
Eggshell, thin, cutting in along the top by hand. Let it dry fully, then knock back nibs with worn 240 grit.
Second coat.
A second thin coat for an even, self-levelled sheen. Peel the floor masking while the paint is still slightly soft for the cleanest release.
Frequently asked
Do I have to sand the old paint?
Gloss or eggshell?
Can renters do this?
Why not tape the board?
How long before it cures?
What if the gap is very wide?
One tin for a whole room?
In closing
The walls and the floor never changed, but the room looks freshly decorated, because the line between them is crisp again. An afternoon, a tube of caulk, and the end of a tin of eggshell. The least glamorous job in the house is also the one with the highest ratio of visible result to time and money spent.
