Re-skimming vs dry lining: which wall finish do you need?
When a fresh skim over existing plaster is enough, when the wall needs boarding first, and what each route costs at Swindon day rates.
Updated 8 September 2026
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Re-skimming is the cheaper fix when your existing plaster is sound but tired: a two-coat finish applied at about 18 m² per day for the £230 Swindon rate. Dry lining (fixing plasterboard to the wall, then skimming it) is the answer for cracked, blown or uneven walls, stud partitions and garage conversions, because it builds a new flat base rather than trusting the old one. To be fair to the cheaper route: when the plaster is genuinely sound, re-skimming is the right answer, not a downgrade — and this guide's job is to help you tell the two walls apart before you spend. The comparison assumes dry, sound-structure walls in habitable rooms: damp-affected walls need diagnosis before any finish goes on.
The short answer: reskim or dry line?
Tap the wall. If it sounds solid everywhere and the surface is just worn, patched or painted-over texture, a re-skim is all you need. If you find hollow, drummy patches, wide cracks or an uneven line from old repairs, the sound plaster is finished: dry lining (or full replaster) is the honest option, and skimming over it only postpones the failure by a year or two.
The two routes compared
Both routes end at the same place (a flat, paint-ready surface), but they differ in what happens to the wall underneath, and in how the job is priced. Boarding adds a working day on a typical room plus the board cost on top of the skim.
| Your wall | Right route | Why |
|---|---|---|
| Sound plaster, tired finish | Re-skim | One visit at the 18 m²/day rate |
| Blown, cracked or crumbling plaster | Dry line (board, then skim) | Boards build the flat base the old wall cannot offer |
| New stud wall or conversion | Dry line from scratch | There is no plaster to reskim |
| Party wall with noise | Acoustic dry lining | Board mass a skim cannot add |
| Also fixes | Surface wear, old texture | Cracks, blown areas, uneven walls |
| New stud walls | Not applicable | The standard method |
What re-skimming involves
The plasterer prepares the existing surface — scrape, wash off old wallpaper paste, PVA or bonding agent where needed — then applies two wet passes of multi-finish and trowels it flat. One 25 kg bag covers about 10 m², so a 45 m² room takes roughly five bags of finish plus preparation materials. It is one visit, low mess, and the room is usually back in use within a fortnight once the coat has dried and been mist-coated.
What dry lining involves
Plasterboard is fixed to the wall — screwed to timber or metal studwork on new partitions, or dot-and-dabbed onto solid masonry with adhesive dabs. Joints are taped and filled, corners beaded, and the boards are then skimmed in the same two-pass finish. New linings must also satisfy the fire classes in Approved Document B: in dwellings, wall and ceiling linings are generally required to be at least Class C-s3,d2 (Table 4.1, Volume 1), and each board's declared reaction-to-fire class — not the generic material name — is what counts. Beyond rescuing failed walls, dry lining is how garage conversions, boxings and media walls get their smooth face, and it can carry insulation boards where a solid wall needs warming up.
The false economy to avoid
Skimming over plaster that has blown saves a day today and buys a full redo later: the new skim follows the old plaster off the wall, cracking along the hollows within a couple of seasons. Any plasterer can find the bad patches by tapping, so ask outright: "is my existing plaster sound enough to skim?" — and treat a quote that skips the question as a quote you cannot compare fairly against a full-price alternative.
Getting comparable quotes
Tell each plasterer what the wall is and what you think is wrong with it, then ask them to state in the quote which route they are pricing and why. A reskim quote and a dry-lining quote differ by a day of labour and a stack of board, so a price that looks expensive next to one may be cheap next to the other. Our plastering cost guide shows how both are worked up from the same £230 day rate. The tap-the-wall test from the first section is now the whole decision: solid everywhere means a re-skim, hollow or cracked means board first. Scope note: this comparison assumes interior walls in ordinary habitable rooms — damp diagnosis, fire-rated linings and acoustic specifications are separate jobs.
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Re-skimming vs dry lining: which wall finish do you need: quick questions
Is dry lining cheaper than replastering?
Dry lining with a skim is the modern way of replastering most walls, and usually prices close to a full wet replaster because board work is quick. The real comparison is a re-skim — cheaper still, but only if your existing plaster is sound enough to carry it.
How much does it cost to dry line and skim one wall?
A single standard wall is typically a day of board work and part of a day to skim — around £230–£345 in labour plus boards and adhesive. Small jobs carry a premium because travel and setup are the same as for a full room.
Can you dry line over artex?
Yes — boarding straight over Artex is a standard way to lose the texture without disturbing it, and it is covered in detail in our Artex options guide. Test pre-2000 Artex for asbestos before anyone screws into it.
Which adds more sound insulation?
Dry lining, because the board cavity or acoustic board adds mass and a break in the path — a skim on its own adds nothing. If party-wall noise is the problem, ask for acoustic plasterboard as part of the dry-lining job rather than treating the two as separate projects.
How long does each route take?
A re-skim on a sound wall is usually a single visit at about 18 m² a day. Dry lining adds the board-hanging stage, so the same wall takes roughly a day longer, plus drying time before painting either way.