Fire-Rated Glass Basics
What is the difference between fire-rated glass and ordinary tempered glass?
Fire-rated glass is tested as part of a complete system under standards such as AS1530.4, BS476-22 or EN1364. It must maintain integrity (prevent flame passage) and often insulation (limit temperature rise) for a specified period. Tempered glass increases impact resistance but does not prevent flame or heat transfer in a fire. You cannot substitute fire-rated glass with tempered glass in any code-required location.
How do I choose between E, EW and EI ratings?
E (Integrity) prevents flame and hot gas passage. EW adds radiation control. EI adds both radiation control and temperature limits on the safe side. Choose EI for escape routes and adjacent occupancies where human safety depends on temperature control. Choose E or EW for smoke barriers and external walls where radiant heat is less critical. Your local building code and fire engineer will specify the minimum requirement.
Can fire-rated glass be used in double or triple glazing?
Only if the entire insulated glazing unit (IGU) has been tested and certified to the required standard. The cavity width, gas fill, spacer bar and secondary sealant all affect fire performance. PyroSpec supplies tested IGU fire-rated systems; do not assume a standard IGU with a fire-rated inner pane will pass certification.
What is the largest panel size available for fire-rated glass?
Maximum panel size is determined by the test report for the specific glazing system, not by the glass manufacturer alone. AS1530.4 systems typically allow up to 1.8m x 2.4m for EI60. BS476-22 systems vary from 1.5m x 3.0m for curtain walling to 3.0m x 3.5m for internal partitions. Always request the test report limitations table.
Standards & Certification
Do I need a certifier to approve fire-rated glazing?
In most jurisdictions, yes. Australia requires a building certifier or fire engineer to verify NCC compliance. The UK requires building control approval (local authority or approved inspector). The UAE requires Civil Defence approval. The certifier needs test reports, installation instructions and evidence that the supplied system matches the tested configuration.
What is the difference between AS1530.4 and BS476-22?
AS1530.4 is the Australian standard measuring FRL (Structural Adequacy, Integrity, Insulation). BS476-22 is the British standard for non-loadbearing elements, using E, EI and EW classifications. The temperature-time curves are similar but not identical, and classification terminology differs. A BS476-22 report is not automatically accepted in Australia; always verify local authority acceptance.
Is CE marking accepted in the UK after Brexit?
In Great Britain, CE marking alone is no longer sufficient for new products placed on the market after January 2023. UKCA marking is now required. Northern Ireland continues to accept CE marking under the Windsor Framework. The underlying test standards (EN 1363/1364/1634) are technically equivalent to BS476 results.
What documents does a certifier need from the glazing supplier?
A complete package includes: the fire test report from an accredited laboratory (CSIRO, UKAS, NATA or equivalent), the Declaration of Performance (DoP) for CE or UKCA marking, installation instructions specifying exact frame, seal and fixing methods, and a compatibility confirmation letter stating the supplied system matches the tested configuration.
Systems & Installation
Can I buy just the fire-rated glass and use my own frame?
No. Fire-rated performance is system-specific. The frame, fixings, intumescent seals and installation method are all part of the tested configuration. Changing any component voids certification. PyroSpec supplies matched glass and framing systems to ensure your certifier receives a complete compliance package.
What is the most common installation error that voids certification?
The most common failure is substituting the tested frame or seal with a generic equivalent. Other frequent errors include incorrect anchor spacing, omitting intumescent seals at the frame-to-glass interface, and using non-certified silicone or gasket materials. Always install exactly per the supplier's instructions and request a compliance checklist.
Do fire-rated doors need special hardware?
Yes. Fire door hardware (hinges, closers, locks and vision panel beads) must be included in the door assembly test under AS1905.1, EN1634-1 or UL10B. Substituting untested hardware can reduce the fire rating. PyroSpec fire door systems include tested hardware compatibility notes.
Can fire-rated glazing be retrofitted into existing buildings?
Yes, but the existing frame must either match the tested system or be replaced with the tested frame. Retrofit projects often require a fire engineer to assess the existing substrate and structural capacity. PyroSpec's technical team can review existing conditions and recommend a compliant replacement strategy.
Specifying & Procurement
How do I specify fire-rated glazing in my project documents?
Include the standard (e.g. BS476-22), the required rating (e.g. EI60), the tested system name, the test report reference number and a note that installation must follow the tested method without substitution. Example: "Fire-rated partition glazing: EI60 per BS476-22, PyroSpec PS-FR Partition System, Warringtonfire report WF-2024-XXXX, installed per PyroSpec installation guide IG-2024-01."
How long does it take to get a fire-rated glazing quotation?
Standard system quotations are typically returned within 24 to 48 hours. Custom sizes, special FRL requirements or projects requiring new test evidence take longer. For fastest response, provide project location, required standard, FRL or EI rating, approximate panel sizes and quantity.
What is the lead time for fire-rated glass production?
Standard certified fire glass typically requires 4 to 6 weeks from order confirmation, depending on quantity, glass type and current production schedule. Matched framing systems may require an additional 2 to 3 weeks. Projects with critical deadlines should contact us early for production slot reservation.
Does PyroSpec supply framed systems or only glass?
PyroSpec supplies complete systems: fire-rated glass, engineered framing, intumescent seals, hardware and installation guidance. This ensures the supplied configuration matches the test report exactly, which is what certifiers require for sign-off.
Markets & Export
What countries does PyroSpec export to?
PyroSpec has active project supply to Australia, the UK, the UAE, Singapore, Hong Kong, the US, Canada, New Zealand, South Africa and across Europe. We maintain test reports and compliance documentation aligned with AS, BS, UL, EN and local civil defence requirements in each market.
Can you supply Australian projects with full NCC compliance documentation?
Yes. We supply AS1530.4 test reports, NCC Section C compliance statements, installation guides and certifier-ready evidence packs for Australian projects. Our systems are tested to Australian conditions and panel size requirements.
Do you provide customs and shipping documentation for international orders?
Yes. We provide commercial invoices, packing lists, certificates of origin, HS code declarations and any additional customs documentation required by the destination country. For large projects we coordinate with freight forwarders for FOB, CIF or DDP delivery terms.
Can I visit the factory before placing an order?
Factory visits are welcome by appointment. We conduct facility tours for architects, specifiers, distributors and project owners, including viewing the production lines, quality control processes and sample testing. Contact us to schedule a visit to our Jiangsu manufacturing facility.
Still Have a Question?
Our technical team responds to specification and compliance enquiries within one business day.