Hush Acoustic & Intumescent Sealant - 900ml

Hush Acoustic & Intumescent Sealant - 900ml is a multi-functional sealant specifically developed to provide both superior sound insulation and critical fire resistance in building constructions. It is designed to ensure that acoustic performance is not compromised by air leakage and that fire safety standards are rigorously met. When exposed to heat during a fire, it will intumesce, meaning it expands significantly to create a dense, protective char. This char effectively seals off gaps and penetrations, preventing the passage of fire, smoke, and hot gases for a specified duration, often providing up to 5 hours of fire resistance. Its inherent acoustic properties are crucial for soundproofing. Sound can easily pass through even small gaps and cracks, undermining the effectiveness of otherwise well-designed acoustic systems. This sealant ensures airtightness around perimeters, joints, and service penetrations (e.g., pipes, cables), thereby maintaining the acoustic integrity of walls, floors, and ceilings. Its robust formulation ensures a durable and long-lasting seal, making it an essential material for both new build and refurbishment projects seeking to achieve compliance with stringent UK Building Regulations for both sound insulation (Approved Document E) and fire safety.

CHARACTERISTICS

• High-performance, multi-functional sealant.
• Provides both superior acoustic insulation and critical fire resistance.
• Expands significantly when exposed to heat (intumesces) to form a protective char.
• Capable of providing up to 5 hours of fire resistance, sealing off gaps against fire, smoke, and hot gases.
• Ensures airtightness to prevent sound flanking and maintain the integrity of acoustic systems.
• Integral component within Hush Acoustics' soundproofing and fire-stopping systems.
• Robust formulation ensures a long-lasting and durable seal.
• Essential for meeting stringent UK Building Regulations for both sound insulation (Approved Document E) and fire safety.
• Suitable for use in both new build and refurbishment projects.

APPLICATION

• For sealing room perimeters, filling gaps in plasterboard systems, sealing around electrical outlets, and any other area where an effective acoustic and fire-rated seal is required.

CERTIFICATION

• Fire rated to BS 476-20 – provides up to five hours fire resistance.
• Acoustically tested to BS EN ISO 140-3.
• Tested for air permeability to BS EN 13141-1.