Full House Re-skim & Stairwell Plasterboard Lining by a Plasterer in Havering

This project was carried out at a Victorian terraced house in Havering, RM1. Properties of this age across the Havering borough typically feature original lath and plaster walls and ceilings that have deteriorated significantly over time. The stairwell area, which is clearly visible in the project photos, is a particularly awkward space common in these older two-storey terraced homes — featuring a raking ceiling line that follows the pitch of the stairs and angled walls that meet at sharp junctions, making boarding and plastering considerably more complex than a standard room.

Prior to works commencing, the stairwell ceiling and surrounding walls were in poor condition. The original plaster surface had broken down in several areas, with the old substrate no longer providing a suitable base for a direct skim coat. The angled ceiling following the staircase pitch showed clear signs of age-related deterioration, and the surfaces were uneven. Rather than attempt a skim directly onto the failing existing plaster, it was agreed that the most durable and long-lasting solution was to board out the stairwell ceiling and walls with new plasterboard before applying a fresh skim coat throughout. This approach is standard practice for Victorian properties where the original plaster has lost its key.

The full scope of work at this Havering property included the removal of old plaster in the stairwell area where necessary, followed by the installation of new 12.5mm plasterboard fixed directly to the existing timber studs and ceiling joists. The raking stairwell ceiling required boards to be cut and fitted at precise angles to follow the pitch of the stairs, with all joints taped and jointed before skimming. Once the plasterboard installation was complete, the entire stairwell ceiling and walls received a full two-coat skim using British Gypsum multi-finish plaster. The scratch coat was applied first and allowed to firm up, after which the finishing coat was applied and trowelled to a flat, even surface. In addition to the stairwell, the wider re-skim programme across the property covered multiple rooms, with walls and ceilings prepared and skimmed to a consistent standard throughout. All electrical drop points and light fittings were carefully worked around and left flush with the new plaster surface. The project was completed as part of a full house renovation programme, bringing all plastered surfaces back to a paintable standard.

Before any plasterboard was fixed, the existing plaster in the stairwell was assessed for structural soundness. Areas of blown or loose plaster were removed back to the timber frame. The staircase and lower floor area were protected with dust sheets to contain debris during the boarding stage. Timber noggins were added where required between the existing joists to provide solid fixing points for the new boards, ensuring no hollow spots or flex in the finished surface. PVA bonding agent was applied to all new plasterboard joints prior to taping, and all screws were countersunk flush to avoid any high spots beneath the skim coat.

With the plasterboard fully fixed and taped, the plastering process began with the application of a scratch coat of British Gypsum multi-finish plaster across the stairwell ceiling. Working on a raking surface above a staircase requires the plasterer to work from a combination of platforms and hop-ups, repositioning frequently to maintain consistent coverage across the angled ceiling plane. The scratch coat was spread at approximately 3–4mm thickness using a wide plastering trowel, working in sections to maintain a wet edge and avoid premature setting. Once the scratch coat had firmed sufficiently, the finishing coat was applied, again at 2–3mm, and the surface was trowelled progressively tighter as the plaster approached its initial set. Water was introduced sparingly with a brush to keep the surface workable during final trowelling passes. The junction between the raking ceiling and the vertical stairwell walls was carefully formed using an internal angle trowel to produce a clean, sharp arris. The same two-coat process was repeated on the stairwell walls, with each coat allowed to reach the correct firmness before the next trowelling pass. The finished skim across both the ceiling and walls produced a consistent, flat surface ready for mist coat and decoration.

The principal challenge on this project was the geometry of the stairwell itself. The raking ceiling follows the pitch of the staircase, creating an acute angle where it meets the upper landing ceiling and an obtuse junction where it meets the lower hallway wall. Cutting 12.5mm plasterboard to fit these non-standard angles accurately — while working in a confined space above a staircase — required careful measurement and templating before each board was fixed. Additionally, the restricted access meant that scaffolding or platform work had to be reconfigured between the boarding and skimming stages, adding time to the programme. Maintaining consistent plaster thickness across a sloping surface overhead is significantly more demanding than working on a flat horizontal ceiling.

To resolve the access and geometry challenges, a combination of a stairwell hop-up platform and adjustable trestle boards was used to provide a stable working surface at the correct height for both the boarding and skimming stages. Each plasterboard sheet was templated individually and cut to the precise raking angle before being offered up to the ceiling, minimising waste and ensuring tight joints throughout. The sloping ceiling was skimmed in sections working from the top of the stair pitch downward, allowing the plasterer to keep a wet edge and blend each section before the plaster began to set. Internal angle beads were used at the sharpest junctions to provide a crisp, defined line that would remain sharp through decoration.

The completed stairwell shows a clean, continuous plaster surface across both the raking ceiling and surrounding walls, with no visible board joints or ridges. The junction between the sloped ceiling and the vertical walls is sharp and well-defined. The lower image in the project photo shows the finished skim coat applied and beginning to dry to a uniform pale buff colour, indicating even thickness and good suction across the surface. The overall result is a stairwell that is fully prepared for mist coat and two full coats of emulsion, with all surfaces flat and consistent. The wider full house re-skim brought the rest of the property up to the same standard.

The homeowner in Havering had the full stairwell plasterboarded and skimmed as part of a wider whole-house re-skim project. With all surfaces now brought back to a flat, sound base, the property was ready for decoration throughout. The stairwell — previously one of the most visually deteriorated areas of the house — now presents a clean, unbroken plaster surface from the ground floor hallway up to the landing. The client was able to hand the property over to decorators immediately after the plaster had cured, keeping the overall renovation programme on schedule.

Plastering a stairwell ceiling is not a task suited to a first-time plasterer or general tradesperson. The combination of awkward access, raking angles, and the need to maintain a wet edge across a sloped overhead surface means that any hesitation or inconsistency in application will result in trowel lines, uneven thickness, or cracking at board joints. In Havering, where many properties are Victorian terraces with original lath and plaster stairwells, getting this work done correctly the first time avoids costly remedial repairs later. An experienced plasterer will assess whether the existing substrate can be skimmed directly or needs overboarding — a decision that significantly affects the durability of the final surface.