Steel beam installation, RSJ and structural alterations in Borough. Trusted, professional, 30+ years' hands-on experience.
GS Renovation installs RSJs and steel beams across Borough and the wider SE1 postcode, working daily with the bay-fronted Victorian and Edwardian terraces that shape this part of Southwark. With over 30 years of structural experience, we remove load-bearing walls safely, from streets near Borough Market to the homes running south towards Camberwell.

The typical Borough terrace has solid brick dividing walls carrying the floors and roof above, so opening up the ground floor is never a simple knock-through. We start with a structural engineer, who sizes the RSJ for the exact span and load, then specify padstones to spread the bearing into the solid masonry. Every beam we fit here is calculated for the real conditions of these Victorian and Edwardian houses, not guessed at.
On site we install temporary propping first, hold the structure while the wall comes down in staged sections, and only then lift the steel into position onto its padstones. This careful sequence protects the floors above and the neighbours either side. Because SE1 terraces are tightly packed, we plan access, dust protection and waste removal so the works stay contained within your home throughout.
In Borough, the wall dividing you from next door and the chimney stack are almost always a shared party wall, so the Party Wall Act applies when a beam bears into it. you serve the correct notices on adjoining owners in good time, which keeps the project legal and avoids disputes with neighbours in these closely built terraces. Getting this right early prevents costly delays once the propping is up.
Steel beam work is governed by building regulations rather than planning permission, so we arrange building control inspection and sign-off for every installation. The inspector checks the beam size, the bearings, the padstones and the connections against the engineer's design. You receive the completion certificate that proves the structural work was done properly, which matters when you come to sell a home anywhere in Southwark.
Borough homeowners choose GS Renovation because we handle the whole beam job as one accountable team, from engineer's calculations to propping, safe demolition and building control sign-off. Three decades working on SE1 terraces means we understand solid-wall bearings and tight sites, and we leave you with certified, honest structural work you can trust.
George did a great job on our new bathroom. He is a really friendly and helpful guy and always ready to discuss any issues or concerns and come up…
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 always kept to commitments and arrived on time. He offered helpful suggestions during his initial visit and promptly provided a reasonably…
FAQ
Be careful, particularly if nobody has visited. Pricing RSJ and steel beam installation for a late Victorian and Edwardian Borough house without seeing it is how a low figure becomes a high one halfway through, and the extras land at SE1 when you have no leverage left. GS Renovation surveys, itemises and holds the total. A second opinion costs nothing and carries no obligation anywhere in Southwark. Call 07472 424 226 and we will look at the SE1 quotation with you. 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.
Deep timber floors, brick walls in lime mortar and occasionally iron columns from former commercial use. Buildings around Borough are frequently older and were built for uses other than housing, so the floors and walls are not domestic in scale or construction. The engineer assesses what is there rather than assuming a standard arrangement, because the load path in these buildings is often not where it appears to be.
It affects how the bearing is formed. Old brickwork in your Borough building is usually bedded in lime mortar, which is softer than modern cement and will crush under a concentrated load. The engineer specifies a padstone or spreader sized to distribute the end reaction over enough brickwork, and the masonry at the bearing is checked and made good before the beam is set.
Most have, and often more than once. A building around Borough may have been commercial, then subdivided, then converted again, with openings formed and walls added at each stage. Some of that work predates any record. The engineer inspects what exists rather than working from the original plan, and earlier alterations found to be inadequate are dealt with before new load is added to them.
Where the building is old or attached to others, it generally is. Recording crack widths and levels at your Borough property before and during the work shows whether anything is actually moving. In a dense area where buildings share walls, that record also matters if a neighbour raises a concern. Where the Party Wall etc. Act applies, the surveyors normally require a schedule of condition.
A named contact from We who is on site rather than reachable in theory. Structural work in a Borough building involves several trades, an engineer's design and building control inspections at set stages, and someone has to hold that together. The owner is told who that is and how to reach them before the work starts, along with what happens if a decision is needed quickly.
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 Borough. Explore what else we do locally:
Same Service, Nearby Areas
We carry out RSJ and steel beam installation across Borough and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for RSJ and steel beam installation in Borough. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.