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Bond It FS4 Fireshield AC – Intumescent Acrylic Fire Sealant (EU4)

£2.38Incl. VAT

Bond It FS4 Fireshield AC is a high-performance intumescent acrylic fire sealant, designed to maintain the fire integrity of walls,...

SKU: BDFWH4

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    Product Details

    • Description

      Bond It FS4 Fireshield AC is a high-performance intumescent acrylic fire sealant, designed to maintain the fire integrity of walls, floors and service penetrations in domestic, commercial and industrial buildings. When exposed to heat, FS4 expands to form a hard, charred barrier that slows the spread of fire, smoke and toxic gases — providing vital additional time for evacuation and protection of the structure.

      This professional-grade sealant is ideal for fire-stopping gaps, linear joints, pipe and cable penetrations, small voids, partition walls, and anywhere fire resistance is required. It adheres strongly to most common building materials including concrete, masonry, timber, plasterboard, metals and PVC, making it highly versatile on site.

      Suitable for use in both new build and refurbishment projects, Bond It FS4 is easy to apply, quick to tool, and overpaintable once cured.

    • Benefits

      Up to 4 hours fire resistance (when tested to relevant standards)

      • Intumescent reaction expands under heat to seal gaps
      • Seals joints up to 50mm
      • Excellent adhesion to most construction materials
      • Low shrink formulation for a reliable finish
      • Overpaintable once cured
      • Halogen-free & solvent-free
      • Ideal for internal fire-stopping applications
      • Movement capability up to 12.5%

    • How to Apply

      1. Ensure surfaces are clean, dry, and free from dust or grease.
      2. Use masking if required for a neat finish.
      3. Cut cartridge tip, load into a standard sealant gun and apply in a continuous bead.
      4. Tool the sealant within 5–10 minutes to ensure full joint contact.
      5. Allow to fully dry before overpainting or subjecting to fire performance.
      6. For larger depths, use a suitable fire-rated backing material.

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