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Therm-A-Seal Fire Only Seal 20 x 4mm – 2.1m
Product Information£5.33 EXC. VAT
FREE DELIVERY
For orders over £199 exc VAT
NEXT DAY DELIVERY
On all orders before 4pm
Designed for sealing the air gap between the leaves and the frame of both timber and steel fire resisting door assemblies.
Features & Benefits
Unaffected by moisture and carbon dioxide and doesn’t require any additional protection.
A very effective intumescent strip made from a unique graphite based intumescent material in a PVC-u casing.
Well suited for use with steel framed timber door assemblies where conventional intumescent foams may break down.
High expansion foam qualities and firm pressure.
In a fire situation, an intumescent foam is produced which is voluminous.
Capable of exerting a pressure high enough to restrain the edges adjacent to the seal.
Areas of Application
Latched single-leaf single-swing 30 minute (FD30) timber fire-resisting door assemblies, Unlatched single-leaf assemblies, latched single-leaf single-swing 60 minute (FD60) timber fire-resisting door assemblies. For further technical advice, please refer to the technical data sheet.
Fire Rating
Fire and smoke performance of BS476: parts 20 and 22:1987.
Certifire Certificate
CF284
CF387
Guarantee
12 months self-adhesive tape (Intumescent does not have an expiry date)
Storage Guidance
Avoid extremes of temperature and humidity, ideally store between 15 and 23°C
Explore our full intumescent seals range
Sorry, there are no items available
Can different brands of fire door seals be used together on the same door set?
No, fire door seals, intumescent strips and smoke seals used on a fire door set should be supplied by the same manufacturer and installed in accordance with the door set's specification, certification and fire test evidence. Fire door seals are tested as part of a complete door assembly, and combining products from different manufacturers may affect the fire performance, smoke control performance and compliance of the door set. Always refer to the door manufacturer's installation guidance and certification before replacing or upgrading any fire door seals.
Can fire door seals be cut to length and joined together?
Yes, most fire door seals, intumescent strips and fire and smoke seals are supplied in standard 2.1 metre lengths and can be cut to the required size during installation. Where a longer seal length is required, compatible seals can be butted together to achieve the necessary coverage. Longer lengths may also be available upon request, depending on the seal type and specification. Always ensure installation is carried out in accordance with the product guidance and the fire door manufacturer's requirements.
Can fire door seals be retrospectively fitted to the edge of a door?
Yes, fire door seals, intumescent strips and certain fire and smoke seals can often be retrospectively fitted to the edge of an existing fire door. However, because fire door seals form part of a tested fire door assembly, it is important to ensure that any modifications are compatible with the door's certification and fire performance requirements. We recommend consulting the fire door manufacturer before carrying out any alterations to confirm the correct seal type, size and installation method for the specific door set.
Do brush seals provide acoustic protection?
No, standard brush seals are primarily designed to provide fire and smoke protection by helping to restrict the passage of smoke and flames through gaps around a door. If acoustic performance or sound reduction is required, we recommend selecting a fire and acoustic seal with integrated fins or flippers, which are specifically designed to help improve sound insulation whilst maintaining the required fire performance. Always refer to the product datasheet, test evidence and certification to ensure the seal is suitable for your application.
How do I know which fire door strip to order?
The correct fire door strip, intumescent seal or fire and smoke door seal should always be selected in accordance with the fire door manufacturer's test evidence, certification and installation instructions. Fire door seals are tested as part of a complete door assembly, and using the correct seal is essential to maintaining the door set's fire performance and compliance. Before ordering, refer to the relevant fire test evidence and certification documents to identify the approved seal type, size and specification for your fire door. If you are unsure, please contact our technical team for guidance.
Designed for sealing the air gap between the leaves and the frame of both timber and steel fire resisting door assemblies.
Features & Benefits
Unaffected by moisture and carbon dioxide and doesn’t require any additional protection.
A very effective intumescent strip made from a unique graphite based intumescent material in a PVC-u casing.
Well suited for use with steel framed timber door assemblies where conventional intumescent foams may break down.
High expansion foam qualities and firm pressure.
In a fire situation, an intumescent foam is produced which is voluminous.
Capable of exerting a pressure high enough to restrain the edges adjacent to the seal.
Areas of Application
Latched single-leaf single-swing 30 minute (FD30) timber fire-resisting door assemblies, Unlatched single-leaf assemblies, latched single-leaf single-swing 60 minute (FD60) timber fire-resisting door assemblies. For further technical advice, please refer to the technical data sheet.
Fire Rating
Fire and smoke performance of BS476: parts 20 and 22:1987.
Certifire Certificate
CF284
CF387
Guarantee
12 months self-adhesive tape (Intumescent does not have an expiry date)
Storage Guidance
Avoid extremes of temperature and humidity, ideally store between 15 and 23°C
Explore our full intumescent seals range
Sorry, there are no items available
Can different brands of fire door seals be used together on the same door set?
No, fire door seals, intumescent strips and smoke seals used on a fire door set should be supplied by the same manufacturer and installed in accordance with the door set's specification, certification and fire test evidence. Fire door seals are tested as part of a complete door assembly, and combining products from different manufacturers may affect the fire performance, smoke control performance and compliance of the door set. Always refer to the door manufacturer's installation guidance and certification before replacing or upgrading any fire door seals.
Can fire door seals be cut to length and joined together?
Yes, most fire door seals, intumescent strips and fire and smoke seals are supplied in standard 2.1 metre lengths and can be cut to the required size during installation. Where a longer seal length is required, compatible seals can be butted together to achieve the necessary coverage. Longer lengths may also be available upon request, depending on the seal type and specification. Always ensure installation is carried out in accordance with the product guidance and the fire door manufacturer's requirements.
Can fire door seals be retrospectively fitted to the edge of a door?
Yes, fire door seals, intumescent strips and certain fire and smoke seals can often be retrospectively fitted to the edge of an existing fire door. However, because fire door seals form part of a tested fire door assembly, it is important to ensure that any modifications are compatible with the door's certification and fire performance requirements. We recommend consulting the fire door manufacturer before carrying out any alterations to confirm the correct seal type, size and installation method for the specific door set.
Do brush seals provide acoustic protection?
No, standard brush seals are primarily designed to provide fire and smoke protection by helping to restrict the passage of smoke and flames through gaps around a door. If acoustic performance or sound reduction is required, we recommend selecting a fire and acoustic seal with integrated fins or flippers, which are specifically designed to help improve sound insulation whilst maintaining the required fire performance. Always refer to the product datasheet, test evidence and certification to ensure the seal is suitable for your application.
How do I know which fire door strip to order?
The correct fire door strip, intumescent seal or fire and smoke door seal should always be selected in accordance with the fire door manufacturer's test evidence, certification and installation instructions. Fire door seals are tested as part of a complete door assembly, and using the correct seal is essential to maintaining the door set's fire performance and compliance. Before ordering, refer to the relevant fire test evidence and certification documents to identify the approved seal type, size and specification for your fire door. If you are unsure, please contact our technical team for guidance.