CCN Internally framed, stiled and railed Acoustic Fire Door Sets
The CCN stiled and railed acoustic fire door sets combine advanced fire resistance with high-performance sound attenuation. Acoustic fire doors are engineered with a robust internal frame and specialized core materials. These doors meet stringent fire ratings while significantly reducing sound transmission. Ideal for environments requiring both safety and acoustic control, they are suited for commercial, residential, and institutional applications where performance and compliance are critical.
Construction
A fully stiled and railed door leaf comprising of a flax/particle inner core surrounded by timber framework and covered by HDF plates. This differs from the solid GDC doors, which rely upon the core for stability, fixity and to support applied finishes and lipping. Thus, the stiled and railed door has the build-standard required of the specific performance requirements of the application.
Performance specification
Fire – FD30 / FD60
Acoustic – Up to Rw40dB for 44mm, up to Rw42dB for 54mm, up to Rw46dB for 71mm
Density – average bulk density 620kg/m3 / 27kg/m3
Sizes – bespoke, made to order
Tested to – BS 476 / EN1634-1 & 3 / EN140-3 – EN1191/2 Severe duty
Independently Certified under BM Trada Q mark Scheme
| Internal | External | Fire | Acoustics | Hinged | Pivot | Hygrothermal | PAS24 |
|---|---|---|---|---|---|---|---|
| ✔ | ✖ | Up to FD60 | 35dB (44mm) 38dB (44mm) 40dB (44mm) 42dB (54mm) 46dB (71mm) | ✔ | ✔ | ✔ | ✖ |
Stiled and Railed Acoustic Fire Doors – Technical Overview
A stiled and railed door is engineered for applications inside buildings. It offers certified fire resistance and sound control. This door also provides sustainability and weight-reduction benefits. The core construction and integrated fire-resistant technologies are designed to inhibit the spread of fire and smoke. They provide critical egress time in fire scenarios.
Key Features
- Core Composition
Constructed with a solid core made from flaxboard, particleboard, or solid timber. These materials are chosen for their low combustibility. They have the ability to resist fire spread under elevated temperatures. - Intumescent Sealing System
Factory-fitted intumescent seals are positioned along the door’s perimeter. These seals expand when exposed to heat. They form an insulating barrier. This barrier restricts the passage of flames, smoke, and hot gases. - Certified Fire Rating
Fire doors undergo testing and classification to withstand fire for a defined duration. This is typically FD30 (30 minutes) or FD60 (60 minutes). These classifications are in accordance with applicable building regulations and fire safety standards. - Door Construction
Doors may feature an internal timber frame surrounding the core. They are typically finished with high-performance facings such as hardwood veneers, plywood, or HPL (High Pressure Laminate). These materials enhance durability and aesthetics.
Advantages of Flaxboard Core
- Fire-Resistant Behavior
Flaxboard is composed of densely compacted natural fibers. It chars rather than ignites. This behavior contributes to the delay of fire propagation through the core. - Sustainability
Derived from renewable plant-based sources, flaxboard is a sustainable material option, supporting environmentally responsible construction practices. - Lightweight Design
Flaxboard provides a lighter alternative compared to mineral or denser timber cores. This feature simplifies door handling and installation. It also enhances hardware compatibility.
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