30mm Rockwool Hardrock Multi-Fix Angle Fillet (75 pieces)

The Rockwool HardRock Multi-Fix Angle Fillet is a high-density, non-combustible stone wool insulation designed to provide full support for waterproof membranes at 90° abutments in flat roof systems. Faced with a mineral-coated glass fibre fleece, it ensures a smooth, durable transition between horizontal and vertical roof interfaces, combining thermal performance, fire safety, and long-lasting reliability for commercial and industrial applications.

Benefits

• Provides robust support for bituminous or GRP waterproof membranes at 90° abutments
• Faced with a mineral-coated glass fibre fleece for a strong, durable bond with membranes
• High-density stone wool offers excellent fire resistance (melting point above 1000°C)
• Compatible with both hot and cold applied bituminous membrane systems
• Enhances the performance and longevity of flat roof insulation systems
• Water-repellent and dimensionally stable for consistent long-term performance
• Made from natural stone wool, supporting sustainable construction practices

Good to Know

• Designed specifically for use at roof edges and junctions with HardRock Multi-Fix flat roof boards
• Supports torch-applied, cold-applied, and GRP membrane systems
• Easy to cut with a serrated or utility knife; wear gloves and goggles to avoid irritation
• Store under cover, off the ground, avoiding prolonged exposure to sunlight and rain
•  Specialist PPE is not required, though a dust mask is recommended when cutting in unventilated areas