Rock Wool Cavity Closers

Rock Wool Cavity Closers are specialised building components designed to seal the gaps in cavity walls around window and door openings while providing excellent thermal and acoustic insulation. Made from high-density mineral wool, these closers offer superior fire resistance, making them an ideal choice for enhancing the safety and performance of modern buildings.

Rock Wool cavity closers are highly effective at preventing cold bridging and moisture ingress, contributing to improved energy efficiency and durability of the building envelope. Their dense, fibrous structure also provides excellent soundproofing qualities, reducing noise transmission through cavity walls.

These closers are non-combustible, dimensionally stable, and resistant to mould and rot, ensuring long-lasting performance in a variety of construction applications. Easy to cut and install on site, Rock Wool cavity closers are suitable for use in masonry, timber frame, and steel frame constructions, helping to meet stringent building regulations for thermal performance and fire safety.

Key Characteristics

• Made from high-density mineral wool providing excellent thermal insulation
• Superior acoustic insulation, reducing noise transmission
• Non-combustible and highly fire resistant, enhancing building safety
• Effective at preventing cold bridging and moisture ingress
• Dimensionally stable and resistant to mould, rot, and pests
• Suitable for use in masonry, timber frame, and steel frame constructions
• Easy to cut and install on site for precise fitting
• Contributes to improved energy efficiency and durability of buildings
• Compliant with current building regulations for thermal and fire performance
• Long-lasting and low maintenance for reliable performance over time