Full House Re-skim & Ceiling Replacement by a Plasterer in Sutton

This project was carried out at a modern residential property in Lambeth, South London — the kind of well-appointed home we regularly work on across the wider South London area, including Sutton SM1. The property featured a contemporary interior with decorative cornicing, large picture windows, fitted joinery, and a stylish kitchen island unit. The rooms were spacious and open-plan in layout, with high ceilings and existing recessed lighting. The owners were undertaking a full interior renovation and needed both ceiling replacement and complete wall re-skimming throughout the property.

Before work began, the property showed several areas of deterioration typical of a home undergoing a full refurbishment. The main reception room ceiling had a visible crack running from the ceiling rose area, along with an open access hatch that had been cut into the ceiling for electrical or plumbing work above. Exposed wiring was hanging from multiple points where downlighters had been removed. The walls throughout showed the rough, porous texture of old painted plaster that had lost its key and was no longer suitable as a direct skim substrate without proper preparation. The ceiling in the main room clearly required full replacement rather than overboarding, given the extent of the damage and the open hatch.

The scope of work across this property was substantial and covered ceiling replacement, wall re-skimming, and full protective sheeting of all fixtures and fittings prior to plastering. In the main reception room, the damaged ceiling was stripped back and new plasterboard was fixed to the existing timber joists using drywall screws at regular centres, with the board joints taped and jointed before skimming. Timber battens were used at the ceiling perimeter and at intermediate points to provide a solid fixing line across the full span of the ceiling. A total of six to eight full sheets of 12.5mm plasterboard were used across the ceiling area, with boards cut to fit around the cornice line and window reveals. All walls throughout the property were prepared and re-skimmed with Thistle Multi-Finish plaster, applied in two coats — a scratch coat and a finishing coat — to achieve a flat, even surface ready for paint. The kitchen area, including the central island unit and all worktops, was fully wrapped in heavy-duty Proplex protective sheeting and polythene dust sheets to prevent contamination. Walls adjacent to cornicing were carefully masked with green tape to protect the existing decorative plasterwork. Electrical cables were left safely protruding through the new ceiling boards, ready for the electrician to reconnect the downlighters once plastering was complete.

Before any plaster was applied, the entire property was prepared methodically. All furniture, kitchen units, and built-in fixtures were protected with heavy-duty Proplex sheeting and black polythene dust covers, secured with green masking tape along the wall and cornice lines. The damaged ceiling in the reception room was inspected and the failing sections were removed to expose the timber joists. New timber noggings were fixed between joists where additional board support was needed. All walls were checked for hollow spots in the old plaster, and any loose sections were hacked off and the edges undercut. Walls were then PVA-bonded to stabilise the porous painted surface before the scratch coat of multi-finish was applied.

The ceiling replacement was completed first. New 12.5mm standard plasterboard sheets were lifted into position and screwed directly to the exposed timber joists, with fixings at no more than 150mm centres along each joist line. Timber battens were introduced at the board perimeters to ensure every edge had a solid fixing, preventing any future movement or cracking along the board joints. The screw heads were set slightly below the board surface to allow for jointing compound to be applied flush. Once all boards were fixed, the ceiling received a full two-coat skim of Thistle Multi-Finish plaster. The scratch coat was applied at approximately 2–3mm thickness, keyed with a devil float, and allowed to firm up before the finishing coat was laid on and trowelled to a smooth, flat surface. The walls were re-skimmed in a similar two-coat process. Each wall received a PVA bond wash the day prior to plastering to reduce suction and improve adhesion. The scratch coat was applied and worked into the existing surface, filling any undulations in the old plaster before the finishing coat was applied and closed off with a clean steel trowel. Internal angles between wall and ceiling were formed using an angle trowel to produce straight, sharp arrises. Cornicing was masked throughout to keep the decorative plasterwork clean. The finished reception room wall shown in the after photograph reveals a flat, even skim coat in its natural brown/buff curing state, with the white-painted cornicing and window surround left intact and unaffected.

The main challenge on this project was managing the ceiling replacement in a room where electrical downlighters had already been partially removed, leaving live or capped wiring hanging from the ceiling at multiple points. The existing ceiling also had an open access hatch, meaning new plasterboard had to be carefully measured and cut around the existing cornice line and light positions without damaging the decorative cornicing below. A secondary challenge was working around a fitted kitchen island unit in an adjacent room, which could not be removed and required full wrapping to protect polished stone worktops and high-gloss cabinet faces from plaster splatter.

To manage the wiring, all electrical cables were carefully fed through pre-cut holes in the new plasterboard before fixing, ensuring each cable was left with enough slack for the electrician to reconnect the downlighters after plastering. The boards were measured and cut room-by-room to work within the cornice line, with the perimeter boards trimmed to butt neatly against the plaster cornice without disturbing it. The kitchen island and all adjacent cabinetry was fully wrapped in multiple layers of Proplex sheeting and polythene, taped down at the floor and wall junctions, providing complete protection throughout the multi-day plastering process.

The finished reception room wall, visible in the third photograph, shows a freshly skimmed surface in its natural curing state — a uniform warm buff tone indicating a full, even coat of Thistle Multi-Finish applied across the entire wall face. The white-painted cornicing runs cleanly along the ceiling junction, with the wall skim butting neatly up to it without any overlap or contamination. The internal corners are sharp and straight, and the reveal around the large picture window is cleanly formed. The new ceiling, now boarded and ready for its skim coat, sits level and flat with no visible board deflection. The property is ready for the electrician to reconnect the downlighters before final decoration.

The client was undertaking a full interior renovation of the property and needed the plastering completed before their decorator and electrician could return to site. By completing the ceiling replacement and full wall re-skims in a single continuous visit, the programme was kept on track. All fixtures, the kitchen island, and the decorative cornicing were returned undamaged. The client had a completely fresh, flat plaster surface across every room — walls and ceilings — ready for mist coat and final decoration within the standard 28-day drying period.

A full house re-skim combined with ceiling replacement involves multiple trades working in sequence, and the quality of the plastering work directly affects every subsequent finish in the property. Boarding a ceiling without adequate noggins or incorrect screw spacing leads to board sag and cracking at the joints within months. Skimming directly over old painted plaster without PVA bonding causes the finish coat to delaminate as the substrate absorbs moisture too quickly. An experienced plasterer in Sutton or across South London understands how to sequence the work, protect finished elements like cornicing, and leave the property in a clean, paint-ready condition — reducing costly remedial work later.