If you’re planning a construction or renovation project that involves altering structural elements, RSJ (Rolled Steel Joist) fitting is a critical service to ensure the strength and stability of your building.
Our RSJ fitting service provides expert installation of steel beams that support loads, allowing for safe structural modifications, such as removing walls, creating open-plan spaces, or supporting new extensions.
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RSJs, also known as I-beams or H-beams, are vital for supporting heavy loads in various construction projects. Whether you’re opening up a space by removing load-bearing walls, adding new floors, or constructing an extension, properly installed RSJs provide the necessary support to maintain your building’s structural integrity.
This service ensures that loads are evenly distributed, preventing potential structural issues.
For dependable and professional RSJ fitting services, reach out to us today.
Our experienced team is ready to assist with your construction project, offering expert advice, precise fitting, and exceptional customer service from start to finish.
Looking for professional RSJ installation in London? At London Core Construction, we provide expert structural steel solutions for residential and commercial properties across the capital.
Whether you're opening up a space, removing a load-bearing wall, or extending your home, our qualified team ensures every RSJ is installed safely, in full compliance with building regulations.
RSJ stands for Rolled Steel Joist, a strong steel beam used to support structural loads in construction. Commonly referred to as steel beams or I-beams, RSJs play a crucial role when altering a building's structure, such as removing interior walls or creating open-plan spaces.
Because RSJs are load-bearing, they replace the support provided by the walls or features being removed. Proper installation is vital to maintain structural integrity and prevent collapse. Without a correctly installed RSJ, your property could be at serious risk. That’s why you need experienced professionals who understand the calculations, positioning, and building regulations involved.
London Core Construction specialises in complete RSJ supply and installation services tailored to a variety of project needs:
Whether you're working with an architect or starting from scratch, our team manages the entire RSJ process from consultation to completion.
RSJ beams are essential in any project that affects the structural support of your property. Some common situations where you may need RSJ installation include:
If you're unsure whether your renovation project needs an RSJ, we provide on-site consultations to assess your requirements and offer professional advice.
Our RSJ installations are carried out by qualified tradespeople and overseen by experienced structural engineers. We work closely with architects, surveyors, and building control to ensure all calculations, designs, and installations are accurate and compliant.
London Core Construction is fully insured and accredited, and we only use high-grade steel supplied by trusted UK manufacturers. Our teams have years of experience delivering safe, precise RSJ installations in homes and commercial properties across London boroughs.
We pride ourselves on workmanship, punctuality, and a clean site after completion. Every project is completed with structural integrity and client satisfaction in mind.
Installing an RSJ demands full compliance with UK building regulations, and at London Core Construction, we take this responsibility seriously. Every project we undertake is designed to meet the latest structural safety standards and satisfy local authority requirements from the outset.
During installation, we ensure that RSJs are securely positioned with the correct padstones and fixings, following all specifications. Our team also manages on-site inspections and arranges final sign-offs with building control to guarantee full compliance.
We never cut corners. Your safety—and the long-term structural integrity of your property—relies on precise, professional execution. With our start-to-finish service, you can trust that your RSJ installation is in expert hands.
We handle every stage of your project, ensuring smooth coordination and timely completion.
With years of experience across London, we understand local regulations, styles, and challenges.
Your space, your vision—our team creates tailored plans that fit your needs and lifestyle.
We use premium materials and expert craftsmanship to deliver lasting, high-quality results.
Our creative team brings fresh, functional design ideas to every project we take on.
We prioritise sustainable materials and energy-efficient methods for a smarter build.
Every RSJ installation begins with a comprehensive consultation. We’ll visit your property, assess the structural requirements of your project, and determine whether a steel beam is necessary. Our team will explain the process clearly, answer your questions, and provide a no-obligation quote based on your goals and the complexity of the work.
Next, we collaborate with structural engineers and, if needed, your architect or designer. During this phase, we carry out structural calculations, prepare technical drawings, and submit plans for building control approval. We ensure all documentation meets current UK building regulations, so there are no surprises or delays once work begins.
Before the installation starts, we manage all logistical details to keep your project running smoothly. This includes organising steel fabrication, securing padstones, scheduling deliveries, and coordinating access to the site. Health and safety measures are also put in place to protect your property and everyone involved in the build.
Our skilled team carries out the RSJ installation with precision and care. We install the steel beam using the approved method statements, ensuring it is seated correctly and supported by the appropriate fixings. Throughout this stage, we maintain clear communication, provide progress updates, and coordinate any required inspections with building control officers.
Once the RSJ is securely installed and signed off, we clean the site and walk you through the completed work. You’ll receive all compliance documentation, including structural approvals and building control sign-off. We only hand over when you’re fully satisfied, leaving you with peace of mind and a structurally sound space ready for the next stage of your renovation.
Yes, RSJ installations always require building regulations approval in the UK. Because RSJs are structural elements, they must be properly designed, installed, and inspected by local building control to ensure the safety and stability of your property. At London Core Construction, we handle all submissions and liaise directly with building control on your behalf.
The cost of RSJ installation varies depending on factors like the size and span of the steel beam, the complexity of the project, and whether walls, ceilings, or utilities need alteration. On average, prices can range from £1,200 to £3,500. We offer transparent, tailored quotes after an initial site consultation to give you an accurate estimate.
Most standard RSJ installations take between one and three days to complete, depending on the scope of work. More complex installations, such as those involving multiple beams or working within tight spaces, may take longer. We’ll provide a detailed timeline during the planning stage so you know what to expect.
Yes, a qualified structural engineer is essential for any RSJ installation. They calculate the load requirements and specify the correct size and type of steel beam needed. At London Core Construction, we work with experienced structural engineers and include this service as part of our end-to-end project management.
No, removing a load-bearing wall without professional support is extremely dangerous. Even with an RSJ, the work must be planned, approved, and executed by qualified professionals. DIY removal risks structural failure, injury, and legal issues. Always use a reputable contractor like London Core Construction to handle the entire process safely and legally.
Whether you have questions about our services, need a quote, or want to discuss your next project, our friendly and knowledgeable team is ready to assist you.