HardRock® Multi-Fix Angle Fillet
Manufactured from high-density, non-combustible ROCKWOOL® insulation and faced with a white mineral coated glass fibre fleece, HardRock® Multi-Fix Angle Fillets are designed to fully support bituminous waterproof membranes at 90° abutments.
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Application(s)
- Roof
- Flat Roof
Product description
HardRock Multi-Fix Angle Fillets have been designed to fully support the waterproof membrane at 90° abutments, providing a smooth transition between the horizontal and vertical interface. The product is manufactured with an integral mineral-coated glass fibre fleece, which forms a strong bond between membrane and insulation on both hot and cold applied bituminous membrane systems.
HardRock Multi-Fix Angle Fillets work with bituminous or GRP waterproofing systems in conjunction with ROCKWOOL HardRock Multi-Fix flat roof insulation boards.
- Supports the bond between membrane and insulation
- Suits hot and cold applied bituminous membrane systems
- Melt temperature above 1000°C - ideal for torch-applied bituminous systems
Areas of application
HardRock Multi-Fix Angle Fillets are suitable for use on the following construction types:
- Bituminous membrane systems
Documentation

HardRock Multi-Fix Angle Fillets Datasheet
Manufactured from high-density, non-combustible ROCKWOOL® insulation and faced with a white mineral coated glass fibre fleece, HardRock® Multi-Fix Angle Fillets are designed to fully support bituminous waterproof membranes at 90° abutments.

Hardrock Multi-Fix Angle Fillets Installation Guide
Installation guideline for Hardrock Multi-Fix Angle Fillet ROCKWOOL Products

SUIS ROCKWOOL UK
Safe use instruction sheet ROCKWOOL stone wool insulation products

Republic of Ireland Price List
Price List March 2025

UK Price List
Price List March 2025
Certificates
Product variants
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