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Fire safety in roofing is no longer just a box‑ticking exercise — it’s a legal, insurance, and design‑critical requirement across the UK and Ireland.
With tighter regulations under the Building Safety Act and Approved Document B, more projects than ever now require verified BROOF(t4) fire-rated roofing systems, particularly:
So, what is BROOF(t4) — and how can you achieve compliance without delays, errors, or added cost?
BROOF(t4) is the highest external fire performance classification for roofing systems under EN 13501‑5.
To achieve this rating, the entire roof system must pass TS 1187 Test 4, which simulates real fire conditions, including:
A system only passes if it:
Important: BROOF(t4) applies to the full system build-up — not individual components.
Demand for BROOF(t4) roofing is rapidly increasing due to:
Using an untested or incorrectly specified system can result in:
Many projects fail BROOF(t4) due to avoidable mistakes:
Fire ratings apply to the complete roofing system, not single materials.
Gravel or slabs only comply under strict installation conditions.
Failures often occur at:
In fire testing, details determine the outcome.
If you want to reduce complexity and ensure compliance, system-based solutions are critical.
TriRoof MultiFlex offers:
TriRoof doesn’t just supply materials — it provides a complete compliance solution:
MultiFlex was used to restore a exposed coastal roof while achieving full fire compliance without compromising the structure.
A busy leisure centre required a safe, disruption-free solution — MultiFlex delivered with:
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