Full House Re-Skim by a Plasterer in Camden – Hallway & Stairwell Case Study

This project took place in a Victorian terraced house in Lambeth, South London — a property type common throughout both South London and neighbouring Camden NW1. The house featured a tall, narrow stairwell with original walls that had deteriorated significantly over decades. The existing plaster had reached the end of its serviceable life, with the owners undertaking a wider full-house renovation. The staircase itself had timber treads and a straight-flight layout typical of late-Victorian terraced housing stock.

When our team arrived on site, the stairwell and hallway walls had already been stripped back to reveal bare brick and remnants of old plaster keys. The top-left image shows the wall surface in its stripped state — exposed brick with patches of old render still adhered, residual plaster daubing across the wall face, and a new plasterboard section installed at the base of the wall where the substrate had failed entirely. Green floor protection sheeting was down, indicating the wider renovation was already underway. The existing plaster throughout had blown away from the background in multiple areas, making a full re-skim the only viable course of action.

The full scope covered re-plastering the entire hallway and stairwell from ground floor through to the upper landing. This included the following elements: preparation of the bare brick substrate with a bonding coat applied across all exposed areas; skimming over the new plasterboard section installed at the base of the stairwell wall; plastering the angled wall and ceiling soffit that follows the pitch of the staircase — a technically demanding area requiring careful trowel work at an acute angle; re-skimming the full-height walls running alongside the staircase on both sides; plastering the flat ceiling sections at the top and bottom landings; and finishing all surfaces with two coats of multi-finish plaster. The floor protection was kept in place throughout to protect the timber stair treads. A work lamp was used to check the wall faces at a raking angle during application, ensuring no hollows or ridges remained in the finish coat.

Before any plaster was applied, the bare brick walls were brushed down to remove dust and loose debris. A bonding coat was applied across the exposed brick sections to build the wall out to a workable depth and provide a mechanical key for the finish skim. The new plasterboard at the base of the wall was jointed and taped at the seams before being PVA-primed to control suction. Beading was fixed at all external angles — including the stairwell corner and the ceiling-to-wall junction at the sloped soffit. Floor protection was checked and re-secured before work began on upper sections.

Once the bonding coat had firmed up to the correct consistency, the multi-finish skim was applied in two passes. The first coat — the scratch coat — was applied at approximately 2–3mm thickness and cross-scratched to provide a key for the second coat. This was particularly important on the bonded brick sections, which had higher suction than the plasterboard areas. The second coat was applied while the first was still green, and the two coats were worked together using a laying-on trowel before being finished with a Marshalltown trowel in firm, sweeping passes. The angled soffit following the staircase pitch was plastered in sections, working from the top of the flight downward to maintain a wet edge. The completed walls visible in the bottom two images show a consistent grey-toned fresh plaster across the full height of the stairwell — flat, even, and ready for paint once fully carbonated. The top-right image shows the wall immediately after the finish coat was applied and the trowel closed up — the surface reads uniformly flat with no ridging visible.

The primary technical challenge on this project was the stairwell geometry. The walls do not run at a simple vertical plane — the ceiling soffit follows the rake of the staircase, creating an acute angle between wall and ceiling that cannot be plastered using standard horizontal or vertical trowel strokes alone. Working at height on a staircase also means the plasterer cannot stand flat-footed; boards must be set across the treads at different heights as the work progresses up the flight. Any inconsistency in the bonding coat depth would telegraph through to the finish coat, so keeping the scratch coat at an even thickness across both brick and plasterboard sections required close monitoring.

To manage the raked soffit, the plasterer worked in overlapping sections from top to bottom, keeping a wet edge throughout and trowelling diagonally across the angle junction rather than attempting to finish wall and ceiling as separate planes. The bonding coat was applied in two passes on the deeper brick sections to build a consistent depth before any finish was applied. A work lamp positioned at a low raking angle was used throughout the finishing stage to catch any hollows or ridges before the plaster stiffened — allowing corrections to be made while the material was still workable.

The completed stairwell, visible in the bottom two images, shows a consistent, flat plaster surface across all wall faces and the raked ceiling soffit. The fresh multi-finish has been trowelled to a smooth grey tone throughout — no ridging, no hollows, and clean bead lines at every external angle. The transition between the new plasterboard section at the base and the bonded brick above reads as a single continuous plane. The stairwell is fully ready for mist coat and decoration, with no further preparation required other than allowing the plaster to dry out fully over approximately four weeks.

The client had the entire stairwell and hallway replastered as part of a wider full-house renovation. With all surfaces now flat and sound, they were able to proceed directly to decoration — mist coat followed by two finishing coats — without any additional remedial work. The replastered hallway provides a clean backdrop that ties together the newly fitted timber stair treads, creating a finished entrance to the property that reflects the scale of the renovation investment.

Re-skimming a stairwell in a Victorian terraced house is not a straightforward single-room skim. The raked ceiling, the mixed substrates — bare brick alongside new plasterboard — and the physical difficulty of working at height on a staircase all require a plasterer with experience across different background types and confined geometries. An uneven bonding coat or plaster applied over dusty brick without adequate preparation will blow within months. Getting the substrate preparation and suction control right at the start is what determines whether the finish lasts.