I am working on a project where we have a 2hr CMU wall on the exterior wall as its next to an occupied building. We have control joints on this wall and we also have to leave some space at head of wall due to movement requirements. Wondering what product can we use for firestopping and if we need an EJ for a CMU wall at edge of slab or if we can use anyone of the existing EJs that are available on your website. The exterior face of the CMU wall will also get waterproofed.
Greetings Jimmy. Thank you for checking out ASK Hilti! CFS-SP WB Firestop Joint Spray is commonly used for the type of joints you describe. Therefore, please utilize FWD1013, HWD1037, WWD1084, or HWD1070 where applicable.
If these systems do not meet your firestop application needs, then we can create a Engineering Judgment (EJ) for you by following the link below.
https://www.hilti.com/content/hilti/W1/US/en/engineering/design-centers/firestop/engineering-judgments.html
Thank You for choosing Hilti as your Firestop Experts!
Best Regards,
Raymond Prescott V,
Fire Protection Engineering Team
