Clean repairs that blend into the room
Good plasterboard repair is about structure and finish. We cut back damaged areas cleanly, usually to a neat square or rectangle rather than an irregular edge, secure replacement board properly to the surrounding studs or joists, and prepare the surface so decoration does not expose the repair. The board itself is only half the job, the tape, joint compound and skim finish over it are what actually determine whether the repair is visible once painted, and rushing that stage is the most common reason a patch repair looks like a patch repair. We match the board thickness to the surrounding material too, since a mismatched thickness leaves a step or shadow line under certain lighting that's difficult to disguise however well the surface is skimmed. Fixing centres matter too, screws need to land on solid timber or metal stud rather than floating in the void, and a board that's only fixed around its edges rather than across its full width tends to develop a slight bow or drum sound when tapped, which shows up as a subtle flaw even once painted. The joint compound itself matters as much as the board, a single thick coat cracks and shrinks unevenly as it dries, while building the joint up in two or three thinner coats, feathered progressively wider each time, gives a flatter, more stable finish that's far less likely to show a hairline crack along the tape line months later.
Useful after leaks, rewiring and accidental damage
Board repairs are often needed after water damage, access holes, tenant changeovers, renovation work or partition changes. We can include insulation, fire-rated board or moisture-resistant board where the room requires it, rather than automatically replacing like-for-like with standard board regardless of what the space is actually used for. Access holes cut by electricians or plumbers to run a cable or pipe are one of the most common repair requests we get, and while they're usually straightforward, getting the board properly supported and jointed matters just as much on a small access hole as it does on a larger area of damage, since an unsupported patch tends to flex, crack along the joint and need doing again within a year. Tenant changeovers bring a slightly different pattern of damage, scuffed corners, small holes from wall-mounted furniture or shelving, and marks from picture hooks or curtain poles, and landlords often bundle several of these smaller repairs into one visit between tenancies rather than dealing with each one separately as it's noticed. Partition changes, taking down a stud wall to open up a room, or building a new one to divide a space, generate their own board repair work at the junctions where the old wall met the ceiling, floor and adjoining walls, and getting those junctions properly finished is often what determines whether a converted room looks intentional or obviously altered. Skirting and coving details around a repair are worth thinking about at the same time, since a section of skirting or coving removed to carry out a board repair needs refitting or replacing to match, and leaving that as an afterthought is a common way an otherwise good repair ends up looking unfinished.
Common types of plasterboard damage in London homes
Impact damage is the most frequent repair we see, door handles punched through a wall, furniture moved carelessly, or a corner knocked during a house move, and these are usually quick, contained repairs. Water damage is more involved, a leak from above or a burst pipe can leave a ceiling section saturated and sagging, and that board almost always needs replacing rather than repairing, since waterlogged plasterboard loses its structural integrity even if it looks intact once dry. Cracking along joints, particularly where a ceiling meets a wall or along a taped seam, is common in older properties where slight movement over the years has worked the joint loose, and this needs re-taping properly rather than simply filling the crack, which tends to reopen within months. Nail pops, where a fixing works its way slightly proud of the board surface and pushes a small dome through the paint, are another common defect in older properties fixed with nails rather than screws, and while the fix is simple, driving the nail back or replacing it with a screw slightly to one side and reskimming, it's easy to mistake for something more serious if you're not familiar with what's causing it. Blown plaster, where the skim coat has separated from the board underneath and sounds hollow when tapped, is another finish-level defect worth catching early, since left alone it eventually flakes away from the wall entirely and takes a section of paint with it. Artex and textured ceilings common in mid-to-late twentieth century London homes bring their own complication, since a smooth plasterboard patch stands out clearly against a textured surrounding surface unless it's either textured to match or the whole ceiling is skimmed over. It's worth noting that Artex applied before the mid-1980s can contain asbestos, so any repair involving cutting, sanding or disturbing an older textured ceiling needs a sensible check first, since the risk isn't from an undisturbed ceiling but from the dust created by working on it without knowing what it contains. Cracking along ceiling joints has a seasonal pattern too in some properties, as timber joists and roof structures expand and contract slightly with temperature and humidity changes through the year, and a crack that reappears every winter in roughly the same spot often points to that kind of ongoing minor movement rather than a one-off failure, which affects how we specify the repair to accommodate it. A flexible joint compound or a slightly different taping approach at a known movement point can reduce the chance of the same crack reopening the following year, compared with treating it exactly like a one-off impact repair.
Choosing the right board for the room
Not every repair should use standard plasterboard, and specifying the wrong type is a common shortcut that causes problems later. Moisture-resistant board, easily identified by its green face paper, is the right choice for bathrooms, kitchens, utility rooms and any area with sustained humidity, since standard board absorbs moisture and can soften or promote mould growth in these conditions over time. Fire-rated board, usually pink or identifiable by its denser core, is required in specific locations under Building Regulations, particularly in HMOs, between a garage and habitable space, and around escape routes, where the board itself forms part of the fire separation between rooms or units. Acoustic or sound-resistant board is worth considering in party wall repairs or between flats, where noise transfer between neighbours is a common source of complaint and a like-for-like standard board repair does nothing to improve on the original performance. We'll flag where the room calls for something other than standard board, even on a small repair, rather than defaulting to whatever's already on the van. Thickness and density also affect performance beyond fire and moisture resistance, a thicker board gives a modest improvement in sound insulation and general robustness against knocks, which is worth considering in a hallway, stairwell or heavily used family room where standard board tends to take the most day-to-day damage. Cost differences between board types are relatively modest compared with the labour involved in a repair, so specifying the correct board rarely changes the overall price of the job by much, but it does change how well the repair holds up, which makes it a fairly easy decision to get right once it's actually raised at quoting stage rather than assumed.
Ceiling repairs versus wall repairs
Ceiling and wall repairs share the same basic technique but behave differently in practice. Ceiling board is fixed to joists rather than studs and carries its own weight against gravity, so a poorly supported ceiling repair is more likely to sag or crack along the joint than an equivalent wall repair, and larger ceiling sections sometimes need noggins added between joists to give the new board proper fixing points. Access is usually more awkward too, particularly in a stairwell or over a bath, which affects how long a ceiling job realistically takes compared with the equivalent wall repair. Wall repairs have their own quirks, a repair near a corner or a door reveal needs the corner bead or architrave treated carefully so the finished line stays straight, and a repair on a partition wall sometimes needs checking for what's inside the void, insulation, cabling or pipework, before simply boarding back over it. Corners and reveals are worth getting right the first time too, a slightly out-of-true corner bead or a poorly aligned architrave junction is far more noticeable to the eye than an imperfection in the middle of a flat wall, since our eyes naturally track straight lines and edges before they register a flat surface. Partition voids are worth a quick check before boarding back over them too, particularly in an older property where a previous owner or a past electrician may have left cabling or pipework in a location that isn't obvious from a plan, and finding that during a repair rather than after the wall is closed up saves having to open it straight back up again. Photographing the void before closing it back up is a small step that's genuinely worth doing, since a quick photo of exactly where cables and pipes run behind a wall saves a lot of guesswork for whoever next needs to put a shelf bracket or a picture hook into that same section of wall.
When a repair should become a full reboard
A contained repair isn't always the most sensible option, and it's worth knowing when a full reboard makes more sense than another patch. If damage is spread across a significant proportion of a ceiling or wall, several separate patches end up costing more in materials, labour and disruption than simply stripping and reboarding the whole surface in one go, and the finish is usually better too, since a single continuous skim avoids multiple joint lines that can telegraph through paint over time. Old lath and plaster ceilings, common in Victorian and Edwardian properties, are a particular case, patching a small section of lath and plaster is possible but increasingly impractical as the material ages and becomes brittle, and converting to plasterboard during a repair is often the more durable long-term option even though it's a bigger job upfront. The ceiling void itself is also worth a look while it's open on an old lath and plaster ceiling, since these voids sometimes hold historic debris, old wiring no longer in use, or evidence of past water ingress that's useful to know about before boarding everything back up out of sight. We'll always give you the choice with a clear comparison of cost and outcome, rather than defaulting to the larger job automatically. Rewiring or replumbing projects often tip the balance towards a full reboard too, since if enough of a ceiling or wall already needs opening up to run new cables or pipes, it's frequently more sensible to reboard the whole surface while it's already exposed than to patch around several separate access points afterwards. Insulation upgrades sometimes tip the decision the same way, since adding insulation behind a wall or above a ceiling as part of a wider improvement usually means the existing board has to come down anyway, at which point reboarding the whole surface costs little more than patching around the disturbed sections and gives a noticeably better finish.