EVERBUILD Fire Mate Intumescent Sealant Grey 380ml

EVERBUILD Fire Mate Intumescent Sealant Grey 380ml is a professional-grade, one-part emulsion acrylic intumescent sealant manufactured by Sika Limited under the trusted Everbuild brand. Designed for trade and commercial use, it delivers proven fire and smoke containment in a wide range of fire-rated structures, while its specialist filler formulation also provides effective acoustic performance — making it a genuine dual-purpose fire-stopping mastic.

Key Features and Specifications

• Format: 380ml sausage/foil pack — larger yield for high-volume or commercial applications
• Colour: Grey
• Base: One-part, emulsion acrylic (water-based, low-odour)
• Intumescent activation: Swells greater than 150% of original size when exposed to temperatures above 125°C
• Fire resistance: Up to 4 hours in suitably designed joints
• Fire rating standard: BS EN 1366-4 (2006) and BS 476 Part 20
• Acoustic rating: BS EN ISO 140/3 — average noise reduction of 24dB (100–3,150Hz)
• Air permeability: Tested to EN13141-1
• Flexibility: Permanently flexible; greater than 100% elongation to ISO8339
• Joint width: Suitable for joints up to 50mm wide
• Cure time: Tack-free in approximately 15 minutes
• Priming: No primer required for most construction substrates
• Finish: Overpaintable once cured
• Application tool: Standard sealant gun (skeleton or barrel gun)

Applications

• Sealing joints, voids, and irregular holes in fire-rated walls and partitions
• Maintaining fire integrity around pipe and cable penetrations through fire-rated structures
• Internal perimeter pointing of fire-rated door and window frames
• Fire-stopping service penetrations in floors and ceilings
• Acoustic sealing of partition walls and stud walls to reduce sound transmission
• Commercial, industrial, and residential fire compartmentation projects

Why Choose This Product

The EVERBUILD Fire Mate Intumescent Sealant Grey 380ml is a trusted choice for contractors, passive fire protection specialists, and site managers who need a compliant, easy-to-apply fire-stopping solution. The 380ml format delivers more material per cartridge than the standard C3 size, reducing changeover time on larger jobs. No primer is needed on most substrates — including concrete, plasterboard, timber, and metal — and the fast 15-minute tack-free cure keeps projects moving. Tested to BS EN 1366-4 and BS 476 Part 20, it supports compliance with UK Building Regulations Approved Document B.

Delivery in and Around London

We deliver the EVERBUILD Fire Mate Intumescent Sealant Grey 380ml to all London boroughs, including Croydon, Lewisham, Southwark, Camden, and Hackney, as well as Greater London areas such as Enfield, Bexley, Redbridge, and Barnet. We also supply to the surrounding counties of Kent, Essex, Surrey, and Hertfordshire. Trade quantities and bulk orders are welcome — contact us for volume pricing and scheduled site deliveries.