Full House Re-skim & Media Wall Preparation by a Plasterer in Wandsworth

This project was carried out at a Victorian terraced house in Lambeth, close to the Wandsworth borough boundary in South London. The property had undergone a broader interior renovation, with the living room serving as the centrepiece of the works. The homeowner had invested in an electric inset fireplace and wall-mounted television setup, requiring a purpose-built media wall to be plastered to a flush, paintable standard. The rest of the house required a full re-skim throughout to bring all surfaces up to a consistent finish ahead of decorating.

Prior to plastering, the living room walls showed the typical condition of an older South London terraced home — aged painted plaster with surface cracking, uneven patches and areas where previous DIY filler attempts had left raised ridges. The main chimney breast wall had been prepared to accept an inset electric fireplace unit and a recessed TV mount, with the surrounding plasterboard framework already in place by the client's builder. The alcove walls flanking the chimney breast had been dry-lined with new plasterboard, while the ceiling had been freshly boarded and required a skim coat throughout to bring it level and smooth before decoration.

The scope of work across this property covered the full re-skim of all rooms, with the living room requiring the most considered approach due to the bespoke media wall construction. The main chimney breast wall had been framed out in plasterboard to form a flat surface housing both the inset electric fireplace aperture and the flush TV recess. This framework required careful skim plastering around the precise cut-outs to ensure clean, sharp edges at both the television recess and the fireplace opening. The flanking alcove walls, previously dry-lined with new plasterboard, were PVA bonded and skimmed in two coats of multi-finish plaster to achieve a flat, even surface. The ceiling across the living room was also skimmed from fresh plasterboard. Throughout the remaining rooms — including bedrooms, hallway and landing — existing plaster walls were assessed, with blown or unstable sections cut back and re-bonded before the full re-skim was applied. All surfaces were prepared to accept emulsion paint directly, with no further lining paper required. The total project brought every wall and ceiling in the house to a uniform, smooth standard consistent with the quality expected in a full renovation.

Before any plaster was applied, all new plasterboard surfaces in the living room were treated with a diluted PVA bonding solution to seal the face paper and improve suction control. The cut edges around the TV recess and fireplace opening were checked for squareness and any gaps between boards were taped and jointed using scrim tape and bonding coat to prevent cracking at the joints. In the remaining rooms, areas of old plaster that had blown or lifted from the substrate were hacked off back to bare brick or block, and a bonding coat was applied to build these sections level with the surrounding surfaces before the full skim was commenced.

The plastering process began in the living room, working from the media wall outward. The chimney breast face — framed in plasterboard with the two recesses for the TV and the electric fireplace — was first scratch-coated with Thistle Multi-Finish plaster, applied at approximately 2–3mm to lock in the surface. Particular care was taken to plaster tight to the edges of both the fireplace aperture and the TV mount recess, ensuring the returns were flush and would sit cleanly against the installed units. A second finishing coat was then laid on while the scratch coat was still green, trowelled back in a series of passes to achieve a flat, polished surface across the full chimney breast face. The alcove walls to either side were skimmed in the same two-coat method, with feathering used at the ceiling line to blend into the freshly skimmed ceiling above. The ceiling itself was skim coated in two passes — scratch coat first, applied with a 16-inch trowel and cross-hatched lightly before the finish coat was applied parallel to the window. Throughout the remaining bedrooms and hallway, walls received the same two-coat multi-finish skim, with any bonded patch sections polished flush before the finish coat was applied. All surfaces were trowelled to a closed, smooth finish ready for mist coat priming.

The primary challenge on this project was plastering cleanly around the two built-in recesses within the media wall — the inset electric fireplace at low level and the flush TV mount recess above. Both openings required the plaster to terminate at a precise, sharp edge without encroaching onto the internal reveals, which would be finished separately by the joiner. Maintaining a truly flat surface across the full width of the chimney breast while working around these two cut-outs — and ensuring the plaster face sat flush with the MDF trim framing each recess — demanded careful trowel control and methodical working from the centre outward.

To achieve clean edges at both the fireplace and TV recesses, aluminium angle bead was fixed to the exposed plasterboard edges at each opening before any plaster was applied. This gave a hard, straight arriss to plaster up to and ensured the finish coat could be ruled off cleanly without risk of the edge crumbling. The scratch coat was applied to the full chimney breast face first, rules were used to check for flat across the surface, and any high spots were knocked back before the finish coat was laid. The two-coat approach across such a feature wall allowed adequate working time to achieve a consistently level result across the full expanse.

The completed living room shows a flat, smooth chimney breast wall with the wide-format electric inset fireplace sitting flush within its aperture and the wall-mounted television recessed cleanly into the surface above. The plaster face across the full chimney breast, alcove walls and ceiling presents a consistent, uniform surface with no visible joint lines, trowel marks or ridges. The patterned feature wallpaper applied by the decorator to the flanking walls sits perfectly flat against the skimmed plasterboard beneath. The ceiling recessed spotlights sit flush with no cracking around the fittings. The finished room reflects the quality of surface preparation that underpins a well-executed interior renovation.

The homeowner in this South London terrace was able to complete their living room renovation with full confidence that the plastered substrate was ready for decorating without further remedial work. The media wall surface required no additional filling or lining paper before wallpapering the flanking alcoves and painting the chimney breast. The inset fireplace and TV were installed directly against the finished plasterwork with clean, gap-free junctions. The client reported that the plasterer finished ahead of schedule, leaving the room clear for the decorator to begin within two days of plastering completing.

Plastering around built-in media walls, fireplace apertures and recessed television mounts is not straightforward work. The plaster must terminate at a precise, clean edge at every recess opening, sit perfectly flat across the full wall face, and cure without cracking at the board joints — all while the installer works around fixed structural elements that cannot be moved. An uneven or poorly finished surface behind a media wall becomes immediately visible once the television and fireplace units are installed and light rakes across the wall. With over ten years plastering Victorian and Edwardian properties across South London, our team understands how to deliver the substrate quality these contemporary fitted features demand.