An RSJ (Rolled Steel Joist) is a structural steel beam used to support the load in a building when existing walls or supports are removed or altered. RSJs are also commonly referred to as steel beams, universal beams, I-beams or H-beams due to their distinctive shape and strength.
RSJs redistribute weight from above - such as floors, roofs and extensions - ensuring structural stability and safety throughout your property.
You’ll typically need an RSJ in projects like:
- Removing load-bearing walls to open up space
- Extensions & loft or basement conversions
- Installing large bi-fold or sliding doors
- Structural support for floors, ceilings or walls
- Commercial buildings and reinforced frameworks
RSJs give homeowners and developers the freedom to create open, modern layouts without compromising on structural integrity.
We follow a thorough, professional installation process designed for safety and compliance:
1. Free Consultation & Site Survey
We assess your plans, inspect the property, and discuss your goals to tailor the right RSJ solution.
2. Structural Calculations & Planning
We work with qualified structural engineers to calculate exact beam size and load requirements - essential for passing building control approval.
3. Detailed Quote & Planning
We prepare a transparent, itemised quotation so you know the full scope of work - no hidden costs.
4. Preparation & Safety Measures
Before installation, we prepare the site, provide temporary supports, and ensure all safety measures are in place.
5. Expert Installation
Our trained installers carefully position and secure the RSJ according to engineering plans - ensuring long-lasting support.
6. Building Regulations Compliance
All installations are checked by building control inspectors to guarantee compliance with UK standards.
This comprehensive approach results in a safe, efficient installation with minimal disruption to your property.
Choosing Up Close Construction for your RSJ installation means:
✔ Structural safety and reliability - installed to meet building regulations
✔ Enhanced open-plan layouts - without unnecessary supporting walls
✔ Increased property value - modernised, structurally sound improvements
✔ Peace of mind - delivered by certified engineers and experienced installers
✔ End-to-end service - from design to installation and sign-off
Properly installed RSJs not only support significant weights but also ensure long-term performance with minimal maintenance.
Costs depend on factors like beam size, location of work, site access and structural complexity. We always ensure you receive a clear breakdown before work begins.
Important cost factors include:
- Structural engineer fees
- RSJ supply and delivery
- Installation labour
- Building control inspections
- Re-plastering and finish work
We tailor every quote to your exact project - giving you control and certainty from the outset.
