What are the accessories for fireproof cable trays and ductwork

Fireproof cable trays and ductwork use a range of accessories including firestop pillows, intumescent coatings, fireproof tapes, caulks, bandages, and penetration seals to ensure fire safety and maintain cable functionality.

Firestop Pillows and Bags

Intumescent firestop pillows are used to seal cable tray penetrations in walls and floors. They expand under heat to block flames and smoke, providing fire resistance up to EI 240 (EN 1366-3) for cables up to 21 mm in diameter. Examples include AF BAGS, which feature a non-combustible fiberglass casing filled with intumescent compounds and thermal insulators, allowing easy repositioning for maintenance or modifications.

3M also offers self-locking firestop pillows for various tray sizes, often used with moldable putty for complete sealing.

Fire-

Resistant Coatings and BandagesFireproof coatings such as FLAMMOTECT-A and HENSOMASTIK® are applied directly to cables or trays to inhibit flame propagation and protect against environmental factors like UV, moisture, and chemicals. Fire protection bandages wrap around cables or trays to prevent burning of insulation and reduce smoke and toxic gas release.

Firestop Caulks and Putty

Intumescent caulks (e.g., IC 15WB) and moldable putty are used to seal gaps around cable trays and ductwork penetrations. These materials expand when exposed to heat, blocking fire and smoke while maintaining the integrity of the fire-rated structure. They are compatible with both new construction and retrofit applications.

Penetration Seals and Splice Plates

Fire penetration seals restore the fire resistance of walls or floors where cable trays pass through. They can include metal-reinforced elastomeric sheets or rock wool panels combined with intumescent compounds. For certain tray types, splice plates with zinc-plated hardware are used to maintain structural integrity while ensuring fire safety.

Additional Accessories

Trunking and duct protection products provide fire resistance for cables and pipes within floors, walls, and ceilings. Environmental protection coatings enhance resistance to oil, saltwater, and other chemicals while providing fireproofing. Mounting brackets and quick-pass devices facilitate installation and retrofitting of firestop systems.

These accessories collectively ensure that cable trays and ductwork remain functional during a fire, prevent flame and smoke propagation, and comply with fire safety standards in industrial, commercial, and sensitive facilities.