EVERBUILD® Fire Mate® Intumescent Sealant - Fire-Resistant & Acoustic

High-Performance Fire-Resistant & Acoustic Acrylic Sealant

EVERBUILD® Fire Mate® is a one-part, emulsion acrylic-based, intumescent acoustic sealant designed to provide up to 4 hours of fire resistance in suitably designed joints. Upon exposure to temperatures exceeding 125°C, it swells more than 150% of its original size, forming a char that impedes the passage of fire and smoke. Additionally, it offers excellent acoustic properties, making it suitable for soundproofing applications.

Key Features & Benefits

• Fire Resistance: Provides up to 4 hours of fire resistance in appropriately designed joints.
• Intumescent Action: Swells over 150% when exposed to heat, creating an effective barrier against fire and smoke.
• Acoustic Properties: Offers an average noise reduction of 24dB (100–3150Hz), enhancing sound insulation.
• Flexibility: Permanently flexible with over 100% elongation to ISO8339 standards.
• Ease of Application: Non-slump formula allows for easy application and tooling.
• Fast Curing: Tack-free in 15 minutes; full cure achieved in 3 to 5 days, depending on conditions.
• Overpaintable: Can be painted over once cured.
• Compliance: Certified under EN15651-1 for interior applications; tested to BS EN 1366-4:2006 and BS EN 1366-3:2009 standards.

Ideal For

• Sealing joints, voids, and irregular holes in fire-rated walls, partitions, and other structures.
• Maintaining the integrity of pipes and cables that penetrate fire-rated structures.
• Internal perimeter pointing of fire-rated door and window frames.

Product Details

• Packaging: 295ml cartridge.
• Colours Available: White, Brown, Grey.
• Shelf Life: 24 months from date of manufacture when stored between +5°C and +30°C.
• Joint Width: Suitable for joints up to 50mm wide.
• Movement Capability: ±7.5% of original joint size.
• Skin Time: Approximately 10 minutes.
• Tack-Free Time: Approximately 15 minutes.
• Full Cure: 3 to 5 days, depending on joint thickness, ambient temperature, and humidity.

Application Instructions

1. Ensure all surfaces are clean, dry, and free from dust, grease, and other contaminants.
2. Remove any loose or flaking surface coatings and old sealant or mastic joints.
3. For improved adhesion, wipe surfaces with EVERBUILD® Glass Cleaner and allow to dry.
4. Cut the tip of the cartridge, taking care not to damage the thread.
5. Attach the nozzle and cut at a 45° angle to the desired bead width.
6. Apply using a standard sealant gun, maintaining even pressure and a consistent angle.
7. Smooth the sealant with a spatula or a piece of wood wetted with linseed oil or white spirits.
8. For improved joint appearance, apply masking tape to both sides of the joint and remove within 5 minutes of application.

Limitations

• Not suitable for use on substrates that may bleed oils, solvents, or plasticisers.
• Not intended for joints that are constantly immersed in water or as part of structural glazing systems.
• May have compatibility issues with some cPVC piping; testing is recommended prior to full application.

Cleaning of Tools

Clean tools immediately after use with a damp cloth. Once cured, the sealant can only be removed mechanically.