CFS-SP SIL - Building material HILTI - Free user manual and instructions

Product Type	Firestop Sealant Spray
Brand	Hilti
Model	CFS-SP SIL
Category	Fire Protection
Composition	Silicone-based, intumescent
Color	White (typical)
Can Volume	600 ml (aerosol can)
Weight (full can)	Approx. 0.85 kg
Application Temperature	+5°C to +40°C
Storage Temperature	+5°C to +30°C
Shelf Life	24 months from production date
Fire Resistance Rating	Up to 4 hours (tested per EN 1366-3)
Application Method	Direct spray onto openings and joints
Curing Time (at 23°C, 50% RH)	Surface dry in 30 min, fully cured in 24 h
Paintable	Yes, once fully cured
Cleanup	With acetone or isopropyl alcohol (when wet)
Safety Precautions	Ensure adequate ventilation; avoid inhalation of spray mist; wear gloves and safety glasses
Spare Parts / Repairability	Non-repairable; single-use aerosol can; recycle empty can
Certifications	CE marked, ETA (European Technical Assessment)

Frequently Asked Questions - CFS-SP SIL HILTI

What is Hilti CFS-SP SIL used for?

Hilti CFS-SP SIL is a firestop spray sealant used to seal small openings, joints, and cracks in fire-rated walls and floors. It expands when exposed to heat, helping to prevent the spread of fire and smoke.

How do I apply the CFS-SP SIL?

Shake the can well before use. Hold the can upright and spray directly into the opening from a distance of about 10-20 cm. Apply in layers for larger gaps. Allow each layer to tack dry before applying the next. The sealant cures in 24 hours.

What surfaces can I apply it on?

It can be applied on concrete, masonry, metal, plastic pipes, and cables. Ensure surfaces are clean, dry, and free of dust or grease.

What is the fire rating of CFS-SP SIL?

The product provides fire resistance up to 4 hours when tested according to EN 1366-3. The actual rating depends on the substrate and joint dimensions.

Can I paint over CFS-SP SIL?

Yes, once fully cured (after 24 hours), the sealant can be painted with water-based or solvent-based paints. Test compatibility on a small area first.

How do I clean uncured sealant?

Uncured sealant can be removed with acetone, isopropyl alcohol, or a citrus-based cleaner. For cured sealant, mechanical removal is required.

Is the CFS-SP SIL safe to use indoors?

Yes, but ensure adequate ventilation during application. Avoid prolonged inhalation of spray mist. Wear gloves and safety glasses. The product is non-toxic once cured.

What is the shelf life of the product?

The shelf life is 24 months from the production date when stored in a cool, dry place between +5°C and +30°C. Do not expose to direct sunlight or temperatures above 50°C.

Can I use this sealant for sealing around cables?

Yes, it is suitable for sealing cable penetrations. Ensure cables are not under tension and the sealant fully encapsulates them. Multiple layers may be needed for large bundles.

How do I dispose of an empty can?

Ensure the can is completely empty. Puncture the can in a well-ventilated area to release residual pressure, then recycle as metal packaging. Do not incinerate.

USER MANUAL CFS-SP SIL HILTI

2095034 A2-07.2018