Smoke & fire containment systems

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FAQ: Gaskets for Fire Door Assemblies

Why do doors need intumescent materials? 

Building Codes require fire door assemblies to meet the requirements of UL 10C and UBC 7-2-97. To meet these requirements, Category A doors will need intumescent within the construction. Category B doors will require a surface applied intumescent gasket. Please refer to our sections on Door Construction Materials and Gaskets for Fire Doors Assemblies for the Lorient products that will help meet these requirements.

What is a Category G gasket?

This is a surface applied gasket providing fire protection only. Some examples of this include our ES980, ES985, and HP400.

What is a Category H gasket?

This is a surface applied or kerf-fitted gasket providing smoke protection. Some examples of this include the BW300 and BW310.

Do you have a seal for smoke and fire containment?

Yes, we have several combined Category G and H gaskets, including the BW502ES992, ES994 and HP410.

Are your products listed with UL or ITS?

Wherever possible, Lorient submits its products for independent certification, to help provide customers and specifiers with complete assurance of the proven performance of Lorient products. Many Lorient products have been tested by Underwriters Laboratories and Intertek Testing Services (also known as Warnock Hersey), to meet the requirements of UL 10C and UBC 7-2-97. These were conducted on several different door constructions and a variety of materials and styles of gasketing. Some products have dual listings and some are specific to one or the other certification body. Our private label accounts also have independent listings. Listings can be found on the UL Certification website and ITS SpecDirect.

Do you have any products for an aluminium door frame?

Lorient can work with you and the relevant approval body to gain the approval you require for fire and smoke, using either a standard product or a bespoke product designed to suit your specific requirements. Please call us to discuss.