What is the minimum and maximum gap size that FAS Fire Door Silicone Sealant can be used in?

FAS Fire Door Silicone Sealant can be used to seal gaps up to 30mm wide when installed as part of a tested FD60 fire door sealing system in conjunction with FAS Fire Door Foam™ or stone mineral fibre wool. The suitability of the sealant for other gap sizes, fire ratings and installation configurations will depend on the specific application and tested system. For guidance on alternative applications, please contact our technical team for advice and supporting test evidence.