Fire performance is one of the most critical considerations in modern construction, particularly when it comes to compartmentation and life safety. BS EN 1634-1 is the primary European test standard used to assess the fire resistance of doorsets, shutters, and openable windows, and it plays a key role in how fire rated access panels and riser doors are evaluated.
What is BS EN 1634-1?
BS EN 1634-1:2014 + A1:2018 is a fire test standard that measures how long a construction product can withstand fire exposure under controlled conditions.
The test simulates a real fire scenario by placing a doorset or panel into a furnace and exposing it to increasing temperatures, following a standard time-temperature curve.
The aim is to determine how effectively the product maintains its performance over time.
What does the test measure?
BS EN 1634-1 focuses on two key performance criteria.
Integrity (E)
Integrity refers to the ability of the product to prevent the passage of flames and hot gases from one side to the other.
A product achieves integrity if:
- Flames do not pass through
- Gaps or openings do not allow fire to spread
- There is no sustained ignition on the unexposed side
Insulation (I)
Insulation measures how well the product limits the transfer of heat.
A product achieves insulation if:
- The temperature rise on the non-fire side stays within defined limits
- The risk of ignition of nearby materials is reduced
| Criterion | What it confirms |
|---|---|
| Integrity (E) | Prevents the passage of flames and hot gases from one side to the other |
| Insulation (I) | Limits the transfer of heat to the unexposed side |
Understanding fire ratings
Fire resistance is expressed using classifications such as:
- E30 — 30 minutes integrity
- EI30 — 30 minutes integrity and insulation
- EI60 — 60 minutes integrity and insulation
The higher the number, the longer the product can withstand fire exposure under test conditions.
| Classification | Integrity | Insulation | Duration |
|---|---|---|---|
| E30 | Yes | — | 30 minutes |
| EI30 | Yes | Yes | 30 minutes |
| EI60 | Yes | Yes | 60 minutes |
How the test works
During testing:
- The product is installed into a representative wall or partition
- It is exposed to fire from one side (or both sides in separate tests)
- Temperatures inside the furnace can exceed 800°C within minutes
- Performance is monitored until failure criteria are reached
Failure can occur if:
- Flames pass through
- Excessive heat transfer is recorded
- Structural collapse or distortion compromises performance
Why BS EN 1634-1 matters for access panels
Although access panels are not always directly covered by product standards for CE or UKCA marking, their fire performance is still assessed using BS EN 1634-1.
This allows manufacturers to:
- Demonstrate fire resistance performance
- Support compliance with Building Regulations Part B
- Provide tested solutions for compartment walls and ceilings
- Ensure consistency and reliability across installations
For specifiers and contractors, it provides a recognised and trusted benchmark when selecting fire-rated access solutions.
Testing vs real-world performance
It’s important to understand that fire testing is carried out under controlled laboratory conditions.
Actual on-site performance depends on:
- Correct installation
- Suitable wall or ceiling construction
- Use of approved components (seals, fixings, boards)
This is why tested details and installation guidance are just as important as the test result itself.
Key takeaway
BS EN 1634-1 is the foundation for fire resistance testing of access panels and doorsets, providing:
- A consistent method of assessing fire performance
- Clear classifications for integrity and insulation
- Confidence for designers, contractors, and building owners
Final thoughts
When specifying fire-rated access panels or riser doors, always look beyond the headline rating.
Ensure the product is backed by:
- Valid test evidence
- Clear installation details
This ensures the product will perform as intended when it matters most.
Related reading
- Fire Ratings Explained — 30/60/90/120 minute ratings in detail
- What Is Fire Compartmentation? — why fire ratings exist
- CE & UKCA Marking on Access Panels — how marking applies to access panels
- Smoke Tested Access Panels — BS EN 1634-3 — the smoke test companion
Ready to specify?
Browse the fire rated access panel ranges, or contact the Technical Service team for BS EN 1634-1 test evidence and installation detail drawings for your project.
FAQs
What is BS EN 1634-1?
BS EN 1634-1:2014 + A1:2018 is a fire test standard that measures how long a construction product can withstand fire exposure under controlled conditions. The test places a doorset or panel into a furnace and exposes it to increasing temperatures following a standard time-temperature curve, to determine how effectively the product maintains its performance over time.
What does BS EN 1634-1 measure?
It focuses on two key performance criteria: integrity (E), the ability to prevent the passage of flames and hot gases from one side to the other; and insulation (I), how well the product limits the transfer of heat to the unexposed side.
What do fire ratings like EI30 and EI60 mean?
Fire resistance is expressed using classifications such as E30 (30 minutes integrity), EI30 (30 minutes integrity and insulation), and EI60 (60 minutes integrity and insulation). The higher the number, the longer the product can withstand fire exposure under test conditions.
How is the BS EN 1634-1 test carried out?
The product is installed into a representative wall or partition and exposed to fire from one side, or both sides in separate tests. Furnace temperatures can exceed 800°C within minutes, and performance is monitored until failure criteria are reached — such as flames passing through, excessive heat transfer, or structural collapse.
Why does BS EN 1634-1 matter for access panels?
Although access panels are not always directly covered by product standards for CE or UKCA marking, their fire performance is still assessed using BS EN 1634-1. This allows manufacturers to demonstrate fire resistance, support compliance with Building Regulations Part B, and provide tested solutions for compartment walls and ceilings.
Does a BS EN 1634-1 test guarantee on-site performance?
No. Fire testing is carried out under controlled laboratory conditions. Actual on-site performance depends on correct installation, suitable wall or ceiling construction, and the use of approved components such as seals, fixings and boards — which is why tested details and installation guidance matter as much as the test result.
