Acoustic Intumescent Sealant – Fire Resistant – Residential & Commercial Use

Product Overview

This high-performance acoustic intumescent sealant comes in a 310ml cartridge, offering a water-based acrylic solution for sealing linear joints and service penetrations within fire-rated wall and floor constructions. It is specially designed to reinstate fire resistance, acoustic integrity, and air tightness where building services or joints interrupt compartment lines.

The intumescent formulation expands under fire conditions to close small gaps and restrict the passage of flames, smoke, and gases. Once cured, it forms a flexible, durable seal capable of accommodating building movement without cracking or loss of adhesion. Tested to provide up to four hours of fire resistance, the sealant also delivers verified acoustic and air leakage performance, making it suitable for both fire protection and sound control applications across multiple substrates.

Features & Benefits

• Fire performance: Provides up to 4 hours of tested fire resistance.
• Acoustic and airtight sealing: Reduces airborne sound transmission and air leakage across compartment junctions.
• System compatibility: Compatible with a variety of installation systems.
• Versatile application: Suitable for sealing linear joints up to 50mm wide and individual service penetrations.
• Durable and flexible: Maintains adhesion and accommodates minor substrate movement without cracking.
• Ease of use: Ready-to-use, one-part water-based acrylic formula supplied in 310ml cartridges for standard applicator guns.

Applications

• Service penetrations: Seals around pipes, conduits, and cable trays passing through fire-rated walls or floors.
• Linear joints: Fills gaps up to 50mm wide between fire-resistant building elements.
• Acoustic barriers: Applied to improve sound insulation and prevent flanking noise paths through joints and penetrations.

Installation Guidance

• Preparation: Ensure all surfaces are clean, dry, and free from dust, grease, or loose material.
• Application: Apply evenly using a standard mastic or sealant gun; tool off within 10 minutes for a smooth finish.
• Joint depth: For deeper gaps, insert a suitable backing material before sealing to maintain correct joint geometry.
• Curing: Allow to cure fully before exposure to moisture or overpainting.

FAQ

• Q: What is the fire resistance rating?
  A: The sealant is tested to provide up to four hours of fire resistance.
• Q: Can it be used on various substrates?
  A: Yes, it is suitable for use across multiple substrates.
• Q: Is it easy to apply?
  A: Yes, it is a ready-to-use formula supplied in cartridges for standard applicator guns.