FAQs

Yes, Fire Door Foam™ has sound reduction capabilities of up to 60 dB Rw.

Yes, FAS Fire Door Foam™ can be used in applications where smoke control is required. The product has smoke leakage test evidence in accordance with BS EN 1634-3: 2004, demonstrating its suitability for use as part of a tested fire and smoke sealing system. In addition to providing fire resistance around fire door frames, FAS Fire Door Foam™ helps maintain compartmentation by restricting the passage of smoke through perimeter gaps between the door frame and surrounding wall. Always refer to the relevant certification, test evidence and installation guidance to ensure the product is suitable for your specific fire door application.

FAS Fire Door Foam™ provides a faster and more cost-effective alternative to traditional fire door installation methods that use stone mineral fibre wool and fire-rated mastic. Designed specifically for sealing gaps between fire door frames and surrounding walls, the fire-rated expanding foam helps reduce installation time while maintaining tested fire performance.

Compared with traditional mineral wool and mastic systems, FAS Fire Door Foam™ can help simplify installation, reduce labour time and improve efficiency on site. It is also compatible with standard plastic and timber packers and has been tested for use in fire door assemblies.

Alternative methods for sealing perimeter gaps around fire door frames include:

• Stone mineral fibre wool with fire-rated mastic
• Fire-rated acrylic sealants
• Other tested fire-stopping systems approved for fire door installations

When selecting a fire-stopping solution, always ensure the product has been tested and certified for use within the specific fire door assembly and application.

Yes, FAS Fire Door Foam™ has been fire tested for use with and without architraves as part of a tested fire door installation system. This provides flexibility when installing and finishing fire door frames, allowing the product to be used in a variety of fire door applications whilst maintaining the tested fire performance of the assembly. Always ensure installation is carried out in accordance with the relevant certification, fire test evidence and installation guidance.

FAS Fire Door Foam™ is a fire-rated expanding foam that has been extensively tested for use in fire door installations and perimeter fire-stopping applications. The product has been fire tested to provide up to 60 minutes of fire resistance in timber and composite doorsets and timber glazed screens in accordance with BS 476: Part 20 & 22: 1987 and BS EN 1634-1. When installed in conjunction with FAS Fire Door Intumescent Acrylic Sealant or FAS Fire Door Silicone, the system has been tested to achieve up to 120 minutes of fire resistance. Please refer to the installation guidance available on the Fire Door Foam™ product page for approved installation methods and tested configurations.

No, FAS Fire Door Foam™ must be applied to both sides of the door frame and must completely fill the void between the frame and the surrounding wall in accordance with the tested installation method. Using Fire Door Foam™ on one side only and acrylic sealant on the other is not an approved installation configuration.

For gaps up to 5mm, FAS Fire Door Intumescent Acrylic Sealant can be used on its own without the need for a backing material. Always follow the relevant installation guidance, certification and fire test evidence to ensure the correct fire stopping solution is used for the specific gap size and fire door application.

FAS Fire Door Foam™ can be installed in perimeter gaps ranging from a minimum practical width of 5mm to a maximum tested gap of 33mm. The fire-rated foam is designed for sealing gaps around fire door frames as part of a tested fire-stopping system. For guidance on permitted gap sizes for specific fire door assemblies and fire resistance requirements, please refer to the FAS Fire Door Foam™ Installation Guide.

No, packers do not need to be covered with FAS Fire Door Foam™, provided they are installed correctly. Plastic or timber packers can remain exposed as long as they are fitted flush with the edge of the door frame or cut back level with the frame edge. This allows the fire door sealing system to be installed in accordance with the tested configuration. Always refer to the relevant installation guidance, certification and fire test evidence to ensure compliance with the specified fire door assembly.

No, FAS Fire Door Foam™ does not require specialist packers or fixings. The product has been specifically tested for use with plastic packers and standard screw fixings as part of a tested fire door installation system. Timber packers and MDF packers may also be used where required. Always ensure the installation is carried out in accordance with the relevant fire test evidence, certification and installation guidance to maintain the fire performance of the door assembly.

Yes, FAS Fire Door Foam™ is NHBC approved for use in fire door installation applications. The product is also specified and mandated by multiple national housebuilders and building developers for the installation of fire doors, reflecting its suitability for use within tested fire door systems. Designed specifically for sealing gaps between fire door frames and surrounding walls, FAS Fire Door Foam™ provides a fast and effective fire-stopping solution for residential and commercial construction projects.

Always refer to the relevant certification, installation guidance and project specifications to ensure compliance with the requirements of the fire door assembly.