Steel beam installation, RSJ and structural alterations in Wimbledon. Trusted, professional, 30+ years' hands-on experience.
GS Renovation installs RSJs and steel beams across Wimbledon, working daily with the bay-fronted Victorian and Edwardian terraces that fill SW19 around Wimbledon Common and the All England Club. With over 30 years of structural experience in Merton, we remove load-bearing walls safely and give you a bright, open ground floor that still stands solid.

The dividing wall between the front reception and the middle room in a Wimbledon terrace is almost always load-bearing, carrying floor joists and the weight above. We never touch it on assumptions. A structural engineer calculates the load and specifies the correct RSJ, and we cast or bed padstones so each end of the beam bears properly onto solid masonry rather than crushing old brickwork.
Before any brick comes down, we install temporary propping to hold the floors and any chimney breast above, then work through a staged, controlled demolition. On the solid-wall construction typical of these SW19 homes, tidy sequencing matters, so we cut back cleanly, seat the steel, pack the bearings and only strike the props once everything is fully supported and dry.
Many Wimbledon terraces share a party wall with next door, and chimney stacks and dividing walls frequently sit right on that line. When a steel beam bears into a shared wall, or you cut pockets for padstones within it, the Party Wall etc. Act 1996 applies. We flag this early so you can serve the correct notice on your neighbour before work begins and avoid disputes later.
We coordinate the structural drawings, the engineer's calculations and the notices so nothing stalls on site. Building control must inspect and sign off the beam installation, checking the bearings, fire protection to the steel and the finished padstones. We book the inspections, meet the surveyor and hand you the completion certificate, which matters when you eventually sell a home in Merton.
No Victorian house is square, and a new opening makes that obvious. The floor slopes, the ceiling is not parallel to it, and the two walls the beam spans between are rarely the same height or exactly opposite one another. If the steel is simply set to the existing ceiling line, the finished opening looks wrong even though the structure is perfect.
So we set out from a datum measured around the room rather than from any single surface. The beam goes in level, since that is what the engineer designed, and the casing and reveals are then packed and adjusted to take up the differences gradually where the eye will not catch them. Where the discrepancy is too large to disguise, we tell you at the outset and agree whether the ceiling is levelled across the whole room or the opening is allowed to follow the house as it has always sat.
Wimbledon homeowners choose GS Renovation because we treat structural work as structural work. Engineer-sized steel, proper padstones, temporary propping and staged demolition, plus honest handling of building control sign-off. Over 30 years across SW19 means we know how these Victorian and Edwardian terraces are built and how to open them up without cutting corners.
Saaid is the best craftsman I have worked with. He knows what he is doing from the very beginning. He has a great knowledge of construction…
My husband and I are extremely pleased with the work. The standard of the work is outstanding and Saiid has a great eye for detail and will not leave…
George is a very hard working builder, and has done a fantastic job on replacing my Bathroom. His attention to detail was great and I wouldn't…
FAQ
No, because everything foreseeable is on the quotation already. RSJ and steel beam installation in late Victorian and Edwardian housing around SW19 occasionally reveals something behind plaster, and when it does we stop, cost it, and get your agreement before continuing at the Wimbledon property. GS Renovation carries the same approach across Merton. Quotes are free and carry no obligation, whether the SW19 property sits in Wimbledon or the wider South West London, and the written figure follows within days. As a rough guide, RSJ and steel beam installation in London runs roughly £1,500 to £4,000 for the beam itself on a single straightforward opening, covering supply, installation and building control sign-off; a full knock-through including taking the wall out, the structural engineer's fee and making good more typically comes to £2,500 to £6,500 or more (indicative London ranges, MyBuilder and Checkatrade, 2026). Your figure depends on the size, specification and condition of the property, which is why we survey before quoting.
We tell you early rather than at the end. Most overruns on an RSJ and steel beam installation job in a Wimbledon home come from something found once the SW19 property is opened, and that is costed and agreed in writing before we carry on. GS Renovation does not use delay as a reason to add to the price. The Merton programme is reissued so you can plan. Nothing is added to a Wimbledon account at SW19 because a Merton programme slipped.
It is, and the paperwork proves it rather than the promise. RSJ and steel beam installation at your SW19 home is inspected by Merton Council, certified at completion, and the installations carry a five year guarantee from GS Renovation. If something needs attention afterwards you call the same team that did the Wimbledon work. That is why so much Merton work is repeat business. Ring 07472 424 226 whenever you need us. Repeat Merton business is what the guarantee actually buys.
A structural engineer, always. GS Renovation is a contractor: we appoint and coordinate the engineer, then build to their specification. The calculations size the beam, the padstones and the bearings for your SW19 opening, and Merton Council inspects against that design.
Most weeks, that is the whole of it. GS Renovation carries out RSJ and steel beam installation on this stock across Wimbledon and the wider Merton, so the SW19 property in front of us is rarely a new problem. Our founder brings over 30 years of hands-on experience to that judgement. Merton Council building control is coordinated as standard. Ring 07472 424 226 and we will describe how RSJ and steel beam installation was recently handled on a very similar SW19 property.
Usually yes. In most Wimbledon terraces the wall you are altering, or the wall the new beam bears into, is a shared party wall with your neighbour. Cutting bearing pockets or padstone recesses into it brings the Party Wall Act into play, so you must serve notice first. We identify this at the survey stage and guide you through the process before any steel goes in.
We work there constantly. RSJ and steel beam installation in SW19 makes up a good share of what GS Renovation does across Wimbledon, which is why the survey can usually be arranged quickly. The Merton Council building control process is the same throughout Merton. Call 07472 424 226 and we will give you the next available slot. Nothing is owed for the visit or the written quotation. Aftercare visits reach that postcode as easily as the Wimbledon survey did.
Every Service, One Team
The same trusted team, 30+ years' hands-on experience and free, no-obligation quotes apply to every GS Renovation service in Wimbledon. Explore what else we do locally:
Same Service, Nearby Areas
We carry out RSJ and steel beam installation across Wimbledon and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for RSJ and steel beam installation in Wimbledon. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.