Hilti Firestop Sealants and Foams
Firestop sealants and foams play an important role in passive fire protection, helping to seal specified gaps and service penetrations as part of a tested firestopping system.
For contractors and firestopping installers, understanding the differences between products is essential when selecting when selecting materials for a project.
What are Hilti firestop sealants used for?
Hilti offers different types of firestop sealants for applicaations including construction joints, electrical penetrations and pipe penetrations.
Depending on the product, these can include:
- Firestop acrylic sealants for specified joints and penetrations
- Firestop silicone sealants for applications requiring the movement characteristics covered by the relevant system
- Intumescent sealants for suitable applications where the material expands when exposed to heat
- Specialist joint sealants and coatings for other specified fire protection applications.
The exact product must be suitable for the penetration or joint being sealed. Different sealants are not automatically interchangable.
When should firestop foam be used?
Firestop foams are designed for specific applications involving gaps around services, cables and pipes. Some products are flexible, while others cure to form a more rigid seal.
When selecting a firestop foam, consider the opening dimensions, substrate, sesrvices passing through the opening and the performance required by the tested system.
Always check whether the product is approved for the intended application rather than selecting it on the basis of convenience alone.
Why product selection matters.
A firestopping system is more than the individual material. Its performance depends on the full installation, including the supporting wall or floor, service type, opening size, backing materials and installation method.
Using the wrong product or deviating from the tested configuration can compromise the intended fire performance.
Blazeout supplies passive fire protection and firestopping materials for construction professionals. If you are looking for Hilti firestop sealants, foams or alternative products for a particular application, our team can help you discuss your requirements and check availability.




