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The 3M™ Interam™ Endothermic Mat

Trust Endothermic Mat E5A-4 for protecting a broad range of critical components including structural steel, emergency circuitry protection and vessel skirts.

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While fire is not inevitable, the risk is real and can have devastating effects. Epoxies and cementitious coatings are messy to apply and can disrupt operations. More engineers, construction contractors, risk management and fire safety professionals around the world are choosing a safe and simple fire protection solution: the 3M™ Interam™ Endothermic Mat (EMat).


  • An icon depicting airflow on top of drops of water.

    Cools the outer surface by releasing chemically bound water when it is exposed to high temperatures.

  • An icon of a molecular structure.

    No cementitious or epoxy-based chemistry needed - EMat is made of a combination of ceramic fibres and inorganic endothermic material.

  • An icon of an hourglass.

    Provides up to 4 hours of protection depending on system selected.

  • A shield icon with a checkmark inside.

    Meets maintenance and repair needs, and addresses corrosion under fireproofing.

  • A clipboard icon with a drop of water on it.

    Does not require spraying, or heating and hoarding, and can improve efficiency when applied in conjunction with other work.

  • A clipboard icon with flames on it.

    ISO 22899 Jet fire certified, ULC 1709 Hydrocarbon tested and IEEE 848 approved.

  • A roll of 3M™ Interam™ Emat E5A-4.

    Helping protect lives and maintaining continuity of operations

    Leaving structural steel exposed to fire can lead to severe damage to the structure, compromising continuity of operations and life safety. 3M™ Interam™ Endothermic Mat E5A-4 provides easy-to-install fire protection for a broad range of critical components including structural steel, emergency circuitry protection and vessel skirts. Its flexibility and space-saving design allows EMat to provide a uniform covering and fulfill installation requirements, even in space-constrained situations.

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Additional fire protection system resources

Complete your fire protection with these additional products

  • 3M™ Fire Barrier Water Tight Sealant 3000 WT is a gun-grade, intumescent, silicone, elastomeric sealant that cures upon exposure to the atmosphere to form a monolithic flexible firestop seal. Properly installed, this sealant helps control the spread of fire, smoke and noxious gasses before, during and after exposure to fire and exhibits good adhesion to a full range of substrates.

  • The 3M™ Aluminum Foil Tape, 437, is flame, moisture, chemical and weather resistant. It performs continuously in temperatures from -40°C to 100°C. This durable acrylic tape has an aluminum foil backing which is ideal for both indoor and outdoor use. The Aluminum Foil Tape also has a thermally conductive and reflective backing which assists with heat shielding and helps prevent UV degradation.

  • The 3M™ VentureClad™ Insulating Jacketing Tape is puncture and tear resistant. It has a Flame/Smoke Rating of 25/25 (ULC S102), 10/20 (ASTM E84). It installs easily onsite with no special tools. With zero permeability, this multi-ply adhesive is laminate coated with colweather acrylic, creating a strong vapour barrier even in extreme environmental conditions.