What Is Skimming?
Skimming is the application of a thin layer of finish plaster — typically 2–3 mm thick — over an existing surface to produce a smooth, flat finish ready for decoration. It is one of the most common interior plastering tasks carried out in UK homes and commercial properties.
A skilled plasterer applies the skim in two passes, trowelling each layer while the material is still workable. The timing of the second coat and the final trowelling — known as closing — is what separates a professional finish from a rough one. Done well, skimming produces a surface that is flat, free of trowel marks, and ready for paint, wallpaper or tiles.
When Is Skimming Needed?
Skimming is appropriate in a range of situations, including:
- New plasterboard walls and ceilings — plasterboard must be skimmed to produce a seamless, continuous surface. Board joints are taped before the skim coat is applied.
- Renovation and redecoration projects — when existing plaster has become uneven, cracked or patchy over time, skimming provides a fresh surface without the cost of full re-plastering.
- After building work — chasing for cables or pipes, doorway alterations, window replacements and similar works leave surfaces that need making good. Skimming blends these areas with the surrounding surface.
- Over artex or textured ceilings — where a textured coating such as artex is present, skimming over it provides a modern, smooth ceiling without the need for full removal.
- Preparing surfaces for decoration — a skim coat gives decorators the best possible base for paint, wallpaper or other finishes.
Benefits of Professional Skimming
- Smooth, flawless finish — a professionally applied skim coat eliminates imperfections and creates a surface ready for decoration in a single pass.
- Cost-effective — skimming is less labour-intensive and uses less material than full plastering, making it a more affordable option where the existing surface is suitable.
- Quick turnaround — most skimming jobs can be completed in a day, and the surface is typically ready for decoration within 5–7 days in normal drying conditions.
- Versatile — suitable for walls and ceilings, over plasterboard, existing plaster, concrete and other substrates when properly prepared.
- Long-lasting — a properly applied and dried skim coat will provide years of service without cracking or failing, provided the substrate remains sound.
Our Skimming Process
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Assessment and Quote
We visit the property to assess the surfaces to be skimmed, check the condition of the existing substrate and provide a clear written quote. We advise on any preparatory work required before we begin.
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Preparation
Surfaces are cleaned, any loose material is removed, and the area is primed or PVA'd to control suction. On plasterboard, joints are taped and corner beads are fixed where necessary. Surrounding areas are protected with dust sheets.
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First Coat
The first thin layer of finish plaster is applied evenly across the surface using a steel trowel. This coat fills minor imperfections and establishes the base for the second pass.
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Second Coat and Closing
Once the first coat has firmed up to the right consistency, the second coat is applied. The plasterer then works the surface — trowelling and flattening — until it is smooth, flat and free of marks. This closing stage is where experience is critical.
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Clean Up
We clean up at the end of each day and remove all materials and equipment on completion. We advise on drying times and preparation for decoration before leaving site.
Areas We Cover for Skimming
We provide skimming services across South Wales. We have dedicated local pages for the following areas:
We also carry out skimming work in Caerphilly, Cardiff, Newport, Pontypridd, Barry and the surrounding South Wales areas. If you are unsure whether we cover your location, get in touch and we will let you know.