125mm Rockwool NyRock Cavity Slab 032 1.64m²

The Rockwool NyRock Cavity Slab 032 is a high-performance stone wool insulation designed specifically for masonry cavity walls. Suitable for full fill and partial fill applications, it delivers excellent thermal efficiency, fire protection, and acoustic performance. Its semi-rigid format allows for a snug fit in cavities while maintaining long-term durability and performance.

Benefits

• Low thermal conductivity, helping to reduce heat loss and improve energy efficiency
• Rated Euroclass A1 non-combustible, providing top-level fire safety
• Semi-rigid slabs compress slightly to fit cavity walls cleanly and securely
• Effective acoustic insulation reduces noise transmission between internal and external spaces
• Water-resistant yet breathable, preventing moisture build-up while allowing vapour to pass through
• Durable and long-lasting, resisting sagging or deformation over time
• Made from natural stone wool, supporting sustainable construction practices
  

Good to Know

• Designed for use in masonry cavity walls, including residential and commercial buildings
• Available in multiple thicknesses to suit a range of wall configurations
• Semi-rigid format allows for friction fit installation, providing a continuous insulation layer
• Easily cut using a utility knife; wear gloves and a dust mask when cutting in unventilated areas
  
• Store under cover, off the ground, avoiding prolonged exposure to sunlight and rain
• Specialist PPE is not required, though a dust mask is recommended if cutting in unventilated areas