Steel beam installation, RSJ and structural alterations in Bexleyheath. Trusted, professional, 30+ years' hands-on experience.
GS Renovation installs RSJs and steel beams across Bexleyheath, working daily on the 1930s semi-detached and interwar houses that line the DA6 streets near Danson Park. With over 30 years of structural experience, we remove load-bearing walls safely, open up dated interwar layouts and keep every job signed off by building control.

The typical Bexleyheath project takes a 1930s semi and opens the wall between the two ground-floor reception rooms, or removes the wall into the rear kitchen. These interwar dividing walls almost always carry the floor above and part of the roof load, so a structural engineer sizes the RSJ, we form padstones to spread the bearing, and building control inspect the steel before it is cased in.
Before anything comes down we install temporary propping and demolish in careful stages, protecting the rest of the house. On the generous plots common in DA6, this creates the bright, connected ground floor that suits family life while keeping the solid interwar structure sound above.
Many Bexleyheath semis share a party wall with the house next door, and chimney breasts and dividing walls frequently sit within that shared structure. Where our steelwork bears into or cuts into a party wall, the Party Wall Act applies, so you serve the correct notices on your neighbour before work starts and keep the paperwork straight.
We coordinate the structural engineer's drawings, the Bexley Council building control application and the propping schedule so the beam goes in on a clear, agreed sequence. Getting the party wall matters settled early avoids disputes and keeps your Bexleyheath project moving without last-minute delays or objections.
Bexleyheath homeowners choose GS Renovation because we treat structural work as the specialism it is. One accountable team handles the engineer's calculations, the propping, the padstones, the Party Wall Act notices and building control sign-off, with 30+ years of experience behind every beam we set into a DA6 interwar home.
He was very very good. He just got on with the job and we was beey pleased with the result. He Also cleaned everything away when he finished. Will…
George was brilliant. Lovely bloke, very reasonably priced and a perfectionist to boot. He completed our small kitchen renovation with care and great…
Giorgio is an excellent and intelligent workman, and with very reasonable prices! He installed a kitchen extractor fan in a complicated situation…
FAQ
Expect the figure to track scope rather than postcode. The RSJ and steel beam installation elements that move a quotation are span, access and condition, all of which we check at the DA6 property before writing anything down. GS Renovation then itemises labour, materials and the Bexley Council element for your Bexleyheath home. Comparing that against another Bexley builder is straightforward because every line is visible. Ring 07472 424 226 and we will arrange a free survey at the DA6 property in Bexleyheath. 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.
In much of this stock, a trussed rafter roof that must not be altered without design. Houses around Bexleyheath from the post war period commonly have engineered roof trusses where every member does a job. A beam installed below does not change that, but any plan to open the loft at the same time does. The engineer looks at the roof as well as the wall before issuing calculations.
Only if it was designed with that in mind. A loft conversion in your Bexleyheath house adds floor loading that travels down through the walls and any beam below, so a beam sized purely for today's loads may not suit. Telling us before the calculations are issued costs very little. Discovering it afterwards can mean replacing steel that is already finished and decorated.
The one between the kitchen and the rear reception room. In a Bexleyheath house that wall generally carries the floor above, so a beam replaces it and bears into masonry at each side. The result is a single space across the back of the house looking onto the garden. Services within the wall are diverted first, and the ceiling is finished across the opening.
The disruptive part is short and the surrounding work is not. Propping, cutting out and setting the beam in a Bexleyheath house is generally a matter of days, but the engineer's design, the building control application and fabrication come first, and plastering, flooring and decoration follow. The structural day everyone pictures sits in the middle of a longer sequence that is planned around it.
It is drained down for as short a period as possible and reinstated as part of the work. Radiators on the wall coming out of your Bexleyheath house have to come off, and pipework in the floor void is usually rerouted at the same time. We refill and rebalance the system afterwards. Where the work runs into colder weather, we arrange temporary heating so you are not left without it.
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 Bexleyheath. Explore what else we do locally:
Same Service, Nearby Areas
We carry out RSJ and steel beam installation across Bexleyheath and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for RSJ and steel beam installation in Bexleyheath. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.