Preparation before paint or tiles
Skimming walls in Middleton
Skimming is the thin coat of finishing plaster that leaves a wall smooth and ready for decoration. It only works well when the surface underneath is sound, so we check for movement, damp and old patch repairs before a trowel ever touches the wall.
How we work
Why a skim coat needs the wall behind it checked first
A skim coat is thin, usually only a few millimetres, which means it follows whatever shape and condition the wall already has. If the plasterboard is loose, if an old plaster base is hollow in places, or if a patch of damp has softened the surface, skimming straight over it will not fix the problem, it will just hide it for a while.
That is why a skimming job usually starts with a short inspection of the wall. We tap across the surface to find hollow or loose areas, look for cracking that suggests movement rather than ordinary settlement, and check skirting and corners for signs of past damp. Sound areas are skimmed directly. Anywhere loose or damaged is cut back and made good with plaster repair before the finishing coat goes on, so the skim sits on a stable base rather than a weak one.
Plaster repair itself varies with what is found. A small crack or a chipped corner needs filling and skimming locally. A larger hollow area, or plasterboard that has come away from the wall, needs the damaged section removed and replaced before it can be skimmed.
What a skimming job typically includes
Checking the wall for hollow, loose or damp areas
Cutting out and replacing damaged plaster or board where needed
Beading fitted to external corners for a straight edge
A full skim coat applied and trowelled to a smooth finish
Drying time allowed before any painting or tiling
A final check for flatness once the plaster has set
Good to know
Skimming over existing walls or starting again
Not every wall needs stripping back to brick or board. If the existing plaster is sound, a skim coat applied directly over it can bring a tired wall back to a smooth, paintable surface for far less disruption than a full replaster. The decision depends on how much of the wall is actually sound once we have checked it, which is covered in our guide to when to skim over old plaster and when to replaster.
Where several walls or a whole room need attention, cost is usually the first question. Our plastering cost per room guide explains what affects the price, from how much preparation is needed to the size of the room, without quoting a figure that might not fit your walls.
Ceilings are a separate job from wall skimming, because they carry their own weight and are more prone to sagging boards or old artex. If your ceiling needs attention as well as the walls, our ceiling plastering service covers that work on its own or alongside a room of skimming.
Read before you commit
Common questions
Skimming walls: your questions answered
How long does freshly skimmed plaster need to dry before painting?
Wait until the plaster has dried throughout, not just lightened on the surface. Thickness, ventilation and room conditions affect drying. Follow the plaster and paint manufacturers’ guidance for the first coat rather than painting to a fixed date.
Can you skim over painted walls or do they need stripping first?
A sound painted wall can usually be skimmed directly, as long as the paint is well bonded and not flaking. A bonding treatment may be applied first so the new plaster keys properly to the painted surface, and we check this before starting rather than assuming it will take.
What about wallpaper, does that need to come off before skimming?
Yes. Wallpaper needs to be stripped back to the wall or board before skimming, because paper left underneath will loosen as the new plaster dries and take the finish with it.
Can a small cracked patch be skimmed without redoing the whole wall?
Often, yes. If the crack is cosmetic and the surrounding plaster is firm, the damaged area can be cut back, repaired and skimmed locally, feathered into the existing surface so the join is not visible once painted.
Is the survey free before a skimming job is quoted?
Yes. We look at the walls, explain what preparation is needed and provide a written quotation before any work is agreed.
Other services we provide
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