If you’ve been researching home renovations or structural work, you’ve probably come across the term “RSJ beam”. But what actually is an RSJ beam, and why is it needed? RSJ stands for Rolled Steel Joist. It’s a structural steel beam designed to support weight within a building when walls or other structural elements are removed. RSJ beams are most commonly used during projects such as load bearing wall removals, open-plan living renovations, home extensions and structural alterations. When a load bearing wall is removed, the weight that wall was supporting still needs somewhere to go. An RSJ beam takes over that structural support safely and redistributes the load across the property. Without the correct steel beam and installation, removing structural walls could lead to sagging ceilings, cracking, movement or serious structural failure. That’s why RSJ installation is such an important part of structural renovation work. Many homeowners in Manchester and across the UK install RSJ beams when creating open-plan kitchen diners or larger living spaces. Older homes were often built with smaller separated rooms, whereas modern renovations tend to focus on brighter, more open layouts. RSJ beams allow those larger openings to be created safely. Before an RSJ beam is installed, a structural engineer will usually assess the property and calculate the correct size and type of beam needed for the project. The beam specification depends on factors such as the size of the opening, the weight above, the structure of the building and the load being carried. Once calculations are complete, experienced structural contractors can then install the beam safely using temporary supports while the structural wall is removed. The cost of RSJ installation varies depending on the size of the beam, labour involved and complexity of the project. Smaller steel beam installations may cost around £2,000 to £4,000 as part of a wall removal project, while larger structural alterations or open-plan renovations can exceed £5,000+ depending on the scope of work. Because structural steelwork affects the safety of the property, RSJ installation should always be carried out by experienced professionals working alongside structural engineers and building control. At Structural Projects North West, we specialise in RSJ installations, load bearing wall removals and structural alterations across Manchester and the North West. Our team regularly works on open-plan renovations, chimney breast removals, structural openings and steel beam installations for homeowners looking to modernise and improve their properties safely. We understand that structural work can feel confusing or overwhelming if you’ve never dealt with it before, which is why we focus on clear communication and guiding clients through every stage of the process. If you’re planning structural alterations and need advice on RSJ beams, steelwork or wall removals, contact Structural Projects North West today to discuss your project with our team.