This decision comes up constantly on period property work, and it's a technical one, not a matter of preference — the wrong finish on the wrong wall can cause damp problems that weren't there before.
Plasterboard and skim means fixing sheets of board to a stud frame or dot-and-dab adhesive, then finishing with a thin skim coat. Traditional wet plaster is built up in coats directly onto the substrate, historically over timber laths and increasingly in lime for older solid walls.
Speed and cost on modern construction
On a new stud partition or a modern cavity wall, plasterboard and skim is faster to install, dries faster, and is the standard, cost-effective specification used throughout new-build and extension work. There is no technical reason to specify traditional wet plaster on new studwork.
Board and skim also gives a very flat, predictable surface, which suits modern decoration and fitted furniture that needs a true wall to sit against.
Why solid old walls behave differently
Solid masonry walls built before around the 1920s were designed to absorb and release moisture through breathable materials. Dot-and-dab plasterboard fixed directly to a solid wall, or a cement-based skim, can trap moisture against the masonry, pushing damp problems into the wall rather than solving them.
Lime-based wet plaster is vapour permeable, allowing the wall to manage moisture the way it was originally built to, which is why it's the standard specification for repairing or replastering solid walls in genuinely old buildings.
Repair versus full replacement
Original lath and lime plaster ceilings and walls in good condition are often worth repairing rather than stripping out entirely — patching a section of lath and plaster to match is a specialist skill but preserves the wall's original behaviour and often its acoustic and thermal character.
Where a ceiling has failed extensively — sagging, cracked keys, or areas that have already come down — full replacement is usually more sensible than patching, and the choice then becomes whether to replaster in lime or simply board and skim, depending on the wall beneath it.
Practical trade-offs
Lime plaster takes longer to apply and cure than board and skim, and it needs a plasterer experienced in lime work, which narrows who can do the job well. Cement-based or gypsum products applied in the wrong place on a solid wall are a common cause of recurring damp complaints we're called out to.
Board and skim is more forgiving of minor wall irregularities and is simpler to chase for new electrics or pipework, which matters on a renovation with significant rewiring or replumbing planned.
Common questions
How do I know if my wall needs lime plaster instead of standard plasterboard?+
The age and construction of the wall decide this, not preference. A solid masonry wall built before around the 1920s with no cavity should generally be assessed for breathable materials before any plasterboard or cement-based product goes near it.
Is lime plaster more expensive than board and skim?+
Generally yes, because it takes longer to apply, needs more coats and skilled labour, and dries more slowly. On the right wall it's not a luxury choice, though — it's the specification that avoids damp problems that cost far more to fix later.
Can I mix the two in one house?+
Yes, and it's common — a solid original front wall might be finished in lime while a later stud partition or extension is boarded and skimmed. The building's construction should dictate this room by room, not a single house-wide decision.
Get a wall survey before replastering
We'll identify which walls in your home are solid and which are modern before recommending a plaster specification, with a written quote either way.