Hilti CFS-HFF Firestop Rib Filler is a smoke and sound-seal that can be used with Tata Steel’s ComFlor® 51+ metal decking to seal the unused rib space of the profile. This offers additional fire resistance and sound absorption. The inserted Rib Filler acts as a firestop barrier when used in applications such as basic and deflection head walls.

Third-party testing

Developed by Hilti, the pre-formed polyurethane foam filler is designed to offer increased fire protection/resistance. Following stringent testing at Warrington Fire UK the Firestop Filler is now fully approved and certified for use within the UK market up to an EI 120 requirement, depending on build type.

The ‘advantages’ at a glance

• Fast and simple to install – minimal preparation needed.
• Cost-effective – very low total installed cost.
• Easy to cut to the required installation depth.
• No mess and zero waste – no caulking or tools required.
• Reliable product solution – easy to inspect.
• Pre-formed product – emission-free and immediately functional after installation.
• Reliability – durable material for long-term performance.
• Excellent firestop properties – sound and acoustic tested.
• Flexible solution – CFS-HFF Flute Filler can easily be retrofitted where flexible walls are already in place.
• Easy modification of flexible walls – CFS-HFF Flute Filler can be exchanged and removed without leaving any residue.

Technical data

Tested under a range of different scenarios, thickness and types of wall coverings, the fire ratings achieved EI (E=integrity: I=insulation) classifications of 30, 60 and 90, as shown below:

Basic Connection

ComFlor® 51+ profile with basic connection to flexible wall. The wall must have a minimum thickness of >144mm and comprise of steel stud lines on both sides with several layers of gypsum board (drywall) of minimum 25mm overall thickness. The wall must be classed in accordance with EN 13501-2.

System rating for both build ups shown below - EI 90/E 120

Deflection Head  - A

ComFlor® 51+ profile with basic connection to flexible wall. The wall must have a minimum thickness of >144mm and comprise of steel stud lines on both sides with several layers of gypsum board (drywall) of minimum 25mm overall thickness. The wall must be classed in accordance with EN 13501-2.

System rating for 100mm Foam Filler - EI 90/E 120

System rating for 2 x 75mm Foam Filler - EI 120

Deflection Head - B

ComFlor® 51+ profile with basic connection to flexible wall. The wall must have a minimum thickness of >100mm and comprise of steel stud lines on both sides with one layer of gypsum board (drywall) of minimum 15mm overall thickness. The wall must be classed in accordance with EN 13501-2.

System rating for 100mm Foam Filler - EI 90/E 120

Deflection Head - C

ComFlor® 51+ profile with basic connection to flexible wall. The wall must have a minimum thickness of >75mm and comprise of steel stud lines on both sides with one layer of gypsum board (drywall) of minimum 12.5mm overall thickness. The wall must be classed in accordance with EN 13501-2.

System rating for 75mm Foam Filler - EI 90

Pre-formed polyurethane foam filler technical data

Installation

• Fast and simple to install with minimum preparation
• The Rib Filler can be cut to size on-site at the time the metal decking is laid, or it can easily be fitted retrospectively
• Before handling and for specific details, refer to Hilti product literature

For further information on any of Tata Steel’s floor decking products or help on the Hilti Flute Filler system please contact the Technical Department

T: +44 (0) 1244 892136

E: technical.structuralproducts@tatasteeleurope.com