Steel beam installation, RSJ and structural alterations in Uxbridge. Trusted, professional, 30+ years' hands-on experience.
GS Renovation installs RSJs and steel beams across Uxbridge, from the 1930s semi-detached homes off the main roads to interwar suburban houses near the Grand Union Canal. With more than 30 years of structural work in UB8, we prop and fit every beam to the engineer's sizing properly and see it through building control from first survey to final sign-off.

The interwar semis common across Uxbridge were built with distinct front and rear reception rooms separated by a load-bearing wall. Opening that wall to create a through room is one of the most requested jobs we handle in UB8. A structural engineer calculates the load and specifies the steel, we install temporary props to carry the floors and roof above, then remove the masonry in safe, staged sections rather than in one go.
Once the opening is clear, the beam is lifted into place and bears onto padstones designed to spread the load into the remaining brickwork. Many of these 1930s houses have a chimney breast within that dividing wall, so we plan the steel around the flue and any stack above. Every beam is checked, packed tight to the existing structure and left ready for Hillingdon Council building control inspection.
Because Uxbridge is dominated by semi-detached and interwar housing, the wall you want to alter often sits on or against the boundary shared with next door. Where a beam bears into a shared party wall, or where cutting a pocket affects your neighbour's structure, the Party Wall Act applies. We flag this early so notices can be served in good time and the works stay on the right side of the law and your neighbour's goodwill.
We coordinate the structural engineer's design, the temporary propping and the demolition sequence so nothing is left unsupported. Padstones are set level, bearings are confirmed and the steel is fire protected where the regulations require it. Building control inspects the opening before it is closed up, and we hand over the completion certificate so your Uxbridge home has a clean paper trail for any future sale.
Uxbridge homeowners choose GS Renovation because we treat steelwork as the structural job it is, not a quick knock-through. One team manages the engineer, the propping and the Hillingdon Council sign-off, working cleanly in your occupied home. With 30+ years in UB8, we get the beam right first time and leave the certificates to prove it.
I am very happy to recommend George after he completed the work on my 2 bathrooms. He worked very hard to make sure everything was completed and even…
What can I say!!! George is an extremely lovely man his workmanship is second to none, he has an excellent eye for detail and nothing was to much…
Punctual, worked hard, and did exactly what he was asked and what he said he would do. Overall, a very high quality job. Will use again.
FAQ
Three things drive it: how much structure is involved, how difficult access is at the UB8 address, and what making good takes afterwards. All three appear separately in the RSJ and steel beam installation quotation for your Uxbridge property. 1930s and interwar houses tend to move the third of those, because materials and dimensions are rarely regular. GS Renovation prices each element rather than averaging across Hillingdon. Ring 07472 424 226 and we will explain which of them dominates at your UB8 address. 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.
Yes, and the conservatory's own structure is assessed first. Where a lean-to or conservatory at your Uxbridge property meets the original rear wall, that wall may be carrying the house above and the addition may be relying on it too. Removing or widening the opening transfers both onto a new beam. Whether the addition itself is worth retaining is usually the first question.
To establish what the foundations actually are before load is concentrated onto them. Where a new beam or post at your Uxbridge house delivers load to a point that was not carrying it before, the engineer needs to know the depth and width of what is beneath. A small excavation answers that. Designing on an assumption about foundations is one of the more expensive things to get wrong.
By closing and securing the opening at the end of each working day. Where structural work at an Uxbridge property exposes the interior, the opening is sheeted, boarded where necessary and the property locked, and the sequence is planned so the exposed period is short. Weather protection and security are the same problem. Most owners are more concerned about the second.
The steel is fabricated and the site is prepared. Once building control has assessed the calculations for an Uxbridge job, the beam is cut to length with any connections formed, which takes time, and the room is cleared and protected. Props and materials are delivered ahead of the structural day. Nothing is opened up until the beam has a confirmed delivery date.
From a survey and the engineer's design rather than from a description over the phone. For an Uxbridge property the quotation covers the temporary works, the steel and its bearings, the removal and disposal, the making good and the building control application. What is excluded is stated as clearly as what is included, because that is where quotations most often differ from each other.
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 Uxbridge. Explore what else we do locally:
Same Service, Nearby Areas
We carry out RSJ and steel beam installation across Uxbridge and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for RSJ and steel beam installation in Uxbridge. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.