Fire Retardant Silicone

VITCAS Fire Retardant Silicone Sealant – Neutral Cure

VITCAS Fire Retardant Silicone Sealant is a white, neutral-curing, flexible silicone designed for fire-resistant sealing of building joints. It provides up to 4 hours of fire protection in suitable tested applications, helping maintain the integrity and insulation performance of fire-resisting constructions.

The sealant accommodates joint movement of up to 25% and is suitable for specified joints up to 25 mm wide and 12 mm deep. Its durable, water-resistant formulation makes it suitable for compatible internal and external building applications, including construction joints, cladding and glazing details.

Key Features and Benefits

• Fire Protection: Provides up to 4 hours of fire resistance in appropriate tested joint configurations.
• Neutral-Curing Silicone: Flexible sealant designed for compatible construction materials.
• Movement Accommodation: Accommodates joint movement of up to 25%.
• Joint Dimensions: Suitable for specified joints up to 25 mm wide and 12 mm deep.
• Good Adhesion: Bonds to many suitable building substrates without priming, subject to surface compatibility.
• Water and Chemical Resistance: Resistant to water, dilute acids, alkalis, soaps and detergents under suitable conditions.

Applications

• Fire-Resistant Building Joints: Sealing compatible construction and movement joints in fire-resisting walls and assemblies.
• Expansion Joints: Flexible sealing of specified joints subject to thermal movement.
• Doors and Fire Barriers: Sealing suitable perimeter joints and interfaces within documented fire-protection systems.
• Cladding and Roofing: Weather-resistant joint sealing where compatible with the construction and exposure conditions.
• Glazing: Capping seals for compatible bead glazing applications.
• Service Penetrations: Use only where the complete penetration-sealing arrangement is covered by appropriate fire-test or assessment documentation.

Application Guidelines

1. Prepare the Surface: Ensure joint surfaces are sound, clean and free from dust, grease, loose material and other contaminants.
2. Check Joint Dimensions: Confirm the width, depth, movement requirements and any backing materials against the specified fire-rated joint design.
3. Apply the Sealant: Using a suitable cartridge gun, apply a continuous bead, ensuring full contact with the joint surfaces and avoiding gaps or trapped air.
4. Finish the Joint: Tool the sealant to achieve a smooth, continuous finish and the required joint profile.
5. Allow to Cure: Protect the seal from disturbance and allow it to cure in accordance with the manufacturer's instructions before placing the joint into service.

Please note: Fire-resistance performance depends on the tested joint configuration, substrates, dimensions and installation method. This fire-rated silicone is not intended as a substitute for specialist high-temperature sealants in applications involving continuous extreme heat.