Skimming applies a thin finish coat over a suitable background. Plasterboarding creates or replaces the board surface before joints or a skim are finished. They are not competing cosmetic upgrades: the existing wall or ceiling determines which stages are appropriate.
When skimming may be suitable
A stable but tired surface may be prepared and skimmed to create a smooth decorating background. Loose plaster, active damp, serious cracking or movement cannot be responsibly solved by covering them with a thin coat.
When plasterboard may be involved
Boards can form new partitions and ceilings or replace failed areas. They may be fixed to framing or suitable masonry systems. The specification needs to consider moisture, fire, sound, loading, services and how cupboards, radiators or televisions will later be fixed.
Ask what sits behind the finish
Photograph cracks, bulges, stains and exposed edges. Confirm removal, boarding, insulation, beads, reveals, drying time, waste and decoration. Ask how the cause of damage will be investigated and which repairs are provisional until surfaces are opened.
Explore LP10 plastering and rendering services or send wall and ceiling photographs.
Follow the condition of the background
Use a skim only where the existing surface is sufficiently sound, suitably prepared and capable of receiving it. Choose a boarding approach when creating a new wall or ceiling, correcting a system that has failed, or providing a specified lining for moisture, sound, insulation or fire performance. Sometimes neither is the first step: leaks, movement, salts or rotten supports need diagnosis and repair. A smooth sample patch does not prove the whole background is stable.
What opening-up may reveal
Wallpaper and paint can conceal hollow plaster, patchwork backgrounds and historic cracking. Behind boards there may be pipework, cables, uneven masonry, damaged timbers or insufficient framing. Added board thickness changes reveals, skirting, cornice, sockets, radiators and door clearances. Agree how fixtures are removed and reinstated, how heavy future items will be supported, and how junctions with retained surfaces are detailed. Drying and ventilation affect when decoration can safely begin; a rushed programme can spoil the finish.
Questions for a written plastering scope
- Why is skimming, overboarding, replacement boarding or another repair proposed?
- Which loose material, coverings and defective backgrounds will be removed?
- What board type, thickness, framing, fixings, beads and finish are included?
- How are cracks, damp evidence and hidden service routes to be handled?
- Who removes and reinstates sockets, radiators, trim and fitted items?
- What drying conditions and wait before decoration should the programme allow?
An electrician or plumber should isolate and move services within their competence. A carpenter may repair joists or framing; a damp or building specialist may be needed where the background failure is structural or moisture-related. A decorator completes preparation after drying. If textured coatings or old boards might present a hazardous-material risk, obtain appropriate assessment before disturbance.
See the LP10 plastering-and-rendering hub, or request a plastering quote with wide views and close photographs of every defect.