Approval under the building regulations comes before the first brick moves, and the inspector wants to see the propping, the beam and its bearings while they are still exposed. Those visits go into the programme. The design comes from a structural engineer we appoint; our job is to build it accurately and make good.
Chimney breast removal in Merton's terraces
Most Merton terraces still carry their original breasts in the two front rooms and often in the closet wing behind. Homeowners usually want the ground or first-floor breast removed to reclaim the alcoves, but the masonry stack continues up through the floors and out at the roof. That retained weight cannot be left hanging, so every removal starts with a structural engineer confirming exactly what is being supported.
Where we take out a breast on the lower floor and keep the stack above, we support it on steel gallows brackets bolted into the party wall, or on a beam where brackets are unsuitable. In SW19 and SW20 homes where the whole flue is redundant, we often remove the full-height stack instead and make the roof good, which removes the load entirely and avoids future damp in the old flue.
Party wall and damp control in SW19
Merton's terraces share a party wall with the house next door, and the chimney stack almost always sits within it. Removing the breast, or bolting gallows brackets into that shared wall, is notifiable under the Party Wall Act, so you serve notice on the adjoining owner before work begins. You serve those notices and keep the neighbour informed throughout.
The structural support is notifiable under the Building Regulations, and Merton Council's building control signs it off, not the planning department. Once the stack is secured we cap any redundant flue with proper ventilation so the old brickwork breathes and stays dry, then replaster the wall and reinstate the skirting so there is no sign a breast was ever there.
What the house is like meanwhile
A chimney breast removal is noisy and dusty for a short period rather than mildly disruptive for a long one, which most people find easier to live with. Expect two or three days of breaking out. Through those days the room is out of use and sealed off, and we would suggest not working from home in the room directly above it if your week can be arranged any other way. If you have small children or anyone with a respiratory condition at home, tell us at survey and we will phase the noisy work differently.
The rest is manageable. Water and power stay on. Heating may be off in that one room while a radiator is moved. Dust is caught at source with extraction rather than left to settle, and the route from the room to the front door is boarded and sheeted. In a Wimbledon or Mitcham terrace where the front door opens straight into the hall, we set the screen at the room doorway so the stairs stay clean.
- Hearth removal and floor structure reinstatement
- Ceiling and joist support where the breast carried them
- Soot and debris contained with screens and sheeting
- Rubble bagged and carried out rather than dropped inside
- Party Wall Act notices for stacks in a shared wall
The GS Renovation Difference in Merton
Merton homeowners choose GS Renovation because we treat chimney breast removal as the structural job it is. You get an engineer-checked support solution, gallows brackets or a beam correctly bolted to the party wall and building control handled end to end, tidy working in an occupied home, and a certified, replastered finish, backed by 30+ years across SW19, SW20, CR4 and SM4.
- Registered in England, Companies House no. 14611254
- Photographs kept at each stage for your records
- Site left safe and secure at the end of every day
- Dust screens and floor protection in occupied homes
- Rubble bagged and carried out, not tipped into the room below
- Cornice, skirting and picture rail matched back in