Hi. As per the product information of CF-F 750 filling foam, one of its applications is back filling for sealant. Would like to confirm if is there any tested UL system available for firestop top-of-wall or wall-to-wall applications where CF-F 750 is specified as a backing material, can't find one in UL generator. If there is none, could the ECC provide an engineering judgement for a construction joint assembly using CF-F 750 as backing material?
Hello John,
There is no UL tested system for wall-to-wall or top-of-wall joints with CF-F 750 filling foam as backing material. We have references with mineral wool or PU backer rod as backfilling materials.
Though, we do have solution with only CP 606 sealant with no backfilling (refer attachments).
Hope this helps.
Thanks,
Team Ask Hilti SEA
