The introduction of the Building Safety Regulator (BSR) has fundamentally changed how higher-risk buildings are designed, constructed and managed. For architects, principal designers, contractors and building owners, demonstrating compliance is now just as important as achieving thermal performance or architectural intent.
For external wall insulation (EWI) systems, this shift places greater emphasis on evidence, system testing and comprehensive technical documentation throughout every stage of a project.
Understanding the Building Safety Regulator
Established under the Building Safety Act 2022, the Building Safety Regulator (BSR) was created to improve the safety and performance of buildings in England following the recommendations made after the Grenfell Tower tragedy.
Originally established within the Health and Safety Executive (HSE), the BSR became a standalone body sponsored by the Ministry of Housing, Communities and Local Government (MHCLG) in January 2026. It has three key responsibilities:
- Regulating the safety of Higher-Risk Buildings (HRBs)
- Raising competence across the construction industry
- Driving improvements in building standards and compliance
For manufacturers and suppliers of External Wall Insulation systems, this represents a significant change in expectations. Product performance alone is no longer enough. Design teams increasingly require robust technical evidence that demonstrates a complete façade system is suitable for its intended application.
Why the BSR Matters for High-Rise External Wall Systems
Higher-Risk Buildings—typically residential buildings that are at least 18 metres in height or have at least 7 storeys, and contain two or more residential units—are subject to significantly greater regulatory scrutiny.
Within these buildings, the external wall is regarded as a critical life safety element. As a result, every component of the façade must contribute to an overall system that has been appropriately assessed, tested and documented.
Today’s project teams are looking for confidence that an external wall insulation system is:
- Appropriate for the building type and height
- Compatible with the proposed substrate
- Independently tested and certified
- Supported by clear installation guidance
- Backed by comprehensive technical documentation
Rather than specifying individual products in isolation, designers are increasingly specifying complete, tested systems that have been developed to work together as a single assembly.
The Importance of the Gateway Process
The Building Safety Act introduced three mandatory Gateway stages for Higher-Risk Buildings. These act as formal regulatory checkpoints, ensuring safety is considered throughout design, construction and occupation.
Gateway One – Planning
Gateway One focuses on fire safety during the planning stage.
Although manufacturers are not directly involved in approvals, this is often when architects begin evaluating façade materials, insulation strategies and external wall build-ups. Access to clear technical guidance at this stage can help inform early specification decisions.
Gateway Two – Before Construction
Gateway Two is often the most significant stage for external wall system manufacturers.
Before construction can begin, the project team must demonstrate that the proposed building complies with Building Regulations. For façade systems, this typically requires detailed technical evidence, including:
- Tested system build-ups
- Fire performance data
- Third-party certification
- Technical specifications
- Installation methodology
- Construction details
- Quality assurance documentation
Without complete and accurate information, project teams may find it difficult to demonstrate compliance and progress through Gateway approval.
Gateway Three – Before Occupation
Once construction is complete, Gateway Three verifies that the building has been constructed in accordance with the approved design before occupation can take place.
This stage relies on accurate records, including installation documentation, inspection records, approved design changes and product information that forms part of the building’s permanent record.
The Golden Thread of Information
Supporting every Gateway is the concept of the Golden Thread—a continuously maintained, accurate and accessible record of building information throughout its entire lifecycle.
For external wall insulation systems, this may include:
- Product datasheets
- Installation manuals
- Detail drawings
- Third-party certification
- Declarations of Performance
- Maintenance guidance
- Inspection records
- Approved specification changes
The objective is clear: everyone responsible for the building should have access to consistent, up-to-date information that supports safe decision-making.
A Shift Towards Evidence-Led Specification
The regulatory changes have also transformed how manufacturers communicate with the industry.
Where brochures once focused primarily on thermal performance, aesthetics and installation speed, today’s design teams expect information that is accurate, transparent, traceable and supported by independent evidence.
Manufacturers are increasingly expected to provide technical resources that integrate seamlessly into Gateway submissions and wider project documentation.
Supporting Safer, Better-Informed Projects
Navigating the Building Safety Act and the Gateway process requires collaboration across the entire project team. Architects, contractors and principal designers rely on accurate, accessible technical information to make informed specification decisions and demonstrate compliance throughout a building’s lifecycle.
At Permarock, we recognise that our role extends beyond supplying external wall insulation systems. Our technical team works alongside project stakeholders by providing comprehensive system documentation, design guidance, standard details, certification and technical support that can assist throughout specification, construction and Gateway submissions.
As the industry continues to evolve, the focus remains the same: delivering external wall systems that are fully supported by evidence, designed as complete assemblies and backed by the technical information needed to help create safer, more resilient buildings.
