Ceiling Overboarding and Re-Skim by a Plasterer in Redbridge, IG1

This project was carried out at a Victorian terraced house in the Lambeth area, with the work being documented for our Redbridge, IG1 clients facing identical ceiling problems. The property featured a tall stairwell or landing ceiling typical of Victorian builds — high ceilings with original plasterwork that had deteriorated significantly over decades. The room had a single window allowing natural light, and the ceiling showed extensive areas of failed plaster, exposing the original lath and substrate beneath large irregular sections.

The ceiling was in a severely deteriorated state prior to work beginning. Large areas of the existing plaster had completely detached and fallen away, leaving exposed sections of the original lath or backing board visible across much of the ceiling surface. The remaining plaster was hollow in multiple areas and posed a risk of further collapse. Around the ceiling perimeter and the central pendant light fitting, the plaster was cracked, blown, and lifting away from the substrate. The walls below were protected with blue masking tape and dust sheets before any work commenced, indicating the extent of loose material that needed to be safely removed before the overboarding process could begin.

The scope of work involved a full ceiling overboarding and skim coat across what appears to be a hallway or stairwell landing ceiling in a Victorian terraced property. The existing failed plaster was stripped back where necessary and the ceiling was prepared to receive new 12.5mm plasterboard sheets. The boards were fixed directly to the ceiling joists using drywall screws, with joints taped using scrim tape and covered with a copper-jointed finish visible in the mid-process photograph. The entire ceiling surface was then skim coated with two coats of multi-finish plaster — a scratch coat to build up an even base, followed by a finishing coat trowelled to a smooth, paint-ready surface. The walls in the space were also partially skimmed as part of the wider project, visible in the finished photograph where fresh plaster can be seen on the wall surfaces alongside the completed ceiling. Protective sheeting and masking tape were applied to all adjacent surfaces including window frames, door architraves, and skirting boards to protect them throughout the process.

Before any boards were fixed, the existing failing plaster was stripped from the ceiling to remove all loose and hollow sections. Dust sheets were laid across the floor and blue masking tape was applied along the wall-ceiling junction and window frames to protect finished surfaces. The ceiling joists were checked for level to ensure the new plasterboard would sit flush without any bow or dip. The plasterboard sheets were measured and cut to fit the ceiling dimensions, with joints positioned away from the centre where possible. All board edges were butted tightly, and scrim tape was applied across every joint before the skim coat was started.

Once the plasterboard was fixed to the ceiling joists with drywall screws at regular intervals, the visible screw heads were checked to ensure they were set just below the board surface without breaking the paper face. Scrim tape was applied across all plasterboard joints to reinforce them and prevent cracking once the skim coat dried. The entire ceiling surface was then misted with a diluted PVA bonding solution to reduce suction from the new boards and create a consistent key for the plaster. The first coat of British Gypsum multi-finish plaster was applied using a plasterer's trowel, working from one end of the ceiling to the other in overlapping passes to build an even scratch coat approximately 2–3mm thick. Once the first coat had begun to firm up, the second finishing coat was applied and trowelled in a cross-hatch pattern to eliminate any trowel lines and pull the surface tight. The plasterer worked the surface progressively as it stiffened, using a clean wet trowel to achieve a smooth, flat finish across the full ceiling area. The finished ceiling visible in the lower-left photograph shows a uniform dark brown freshly plastered surface, indicating the multi-finish had been applied evenly and was drying consistently without patches or dry spots.

The primary challenge on this project was the extensive failure of the existing ceiling plaster. Rather than isolated patches of blown plaster, the majority of the ceiling surface had detached or was at immediate risk of falling, making patch repair completely impractical. Working at height in a narrow hallway or stairwell space added complexity, as access was restricted and boards needed to be lifted and fixed overhead in a confined area. Ensuring the new plasterboard sheets were fixed level across the full ceiling span — without the benefit of a wide open room — required careful measurement and staging of the work.

The decision to fully overbard the ceiling rather than attempt patch repairs was the correct course of action given the scale of the plaster failure. By fixing new 12.5mm plasterboard directly to the ceiling joists, the team created a completely fresh, stable substrate that eliminated any risk of further plaster drop. Scrim tape across every board joint ensured no cracking would develop at the joins once the skim coat dried. A PVA bonding coat controlled the suction from the fresh boards, allowing the multi-finish plaster to be applied at a consistent thickness and worked to a smooth surface without pulling or dragging on the trowel.

The completed ceiling shows a freshly skimmed, smooth surface across the full hallway or landing area. The dark brown tone of the drying multi-finish plaster is consistent across the entire ceiling, with no visible patches, hollows, or uneven areas. The ceiling-to-wall junction is clean and straight, and the pendant light drop cord hangs centrally through the newly plastered surface. The walls alongside the ceiling also show freshly applied plaster, suggesting the wider re-skim work was carried out as part of the same visit. The space has been fully transformed from a ceiling that was actively collapsing to one that is ready for mist coat painting.

The client now has a fully stable, smooth ceiling that is ready for mist coat and decoration. The risk of further plaster falling — which had been a genuine safety concern given the extent of the failure — has been completely eliminated. The new plasterboard and skim coat will last for decades with normal maintenance. The wider wall re-skim carried out at the same time means the entire hallway space can now be decorated as a single, cohesive project without any further plastering work required.

Ceiling overboarding in a tall Victorian hallway or stairwell is not a DIY-friendly job. The boards must be fixed level and flush to the joists overhead, scrim-taped at every joint, and then skimmed in two coats — all while working at height in a confined space. An uneven board fix will telegraph through the skim coat and remain visible once painted. Controlling suction on new plasterboard is equally critical — without a PVA bonding coat, multi-finish plaster can pull and dry too fast, leaving a rough surface that requires sanding or re-skimming. Getting the process right from the start saves significant time and remedial cost.