Mineral Fibre External Wall Insulation Systems

PermaRock Mineral Fibre external wall insulation (EWI) systems are fire-safe, high performance thermal insulation systems that are extremely versatile and suited for application to walls and soffits all building types including residential buildings, hospitals, hotels,  schools, and public buildings where the highest levels of fire resistance and non-combustibility are required.

PermaRock Mineral Fibre EWI Systems are suitable for use above DPC level on buildings with floor levels above 18 metres above ground level and assessed to EN 13501-1: 2007 achieving a reaction to fire classification of A2-s1,d0.

PermaRock Mineral Fibre Systems have been tested to BS 8414 and meet the requirements of BR 135 - ‘Fire performance of external thermal insulation for walls of multistorey buildings’. The systems also achieve a 'Class O' classification under the Building Regulations Part B for fire-spread across the surface.

The systems are also recommended for multi-storey, high-rise buildings and, in Scotland, any building that is less than 1m from a boundary.

Find out more on specifing external wall insulation on high-rise buildings

Key Features

  • Excellent Fire Performance: non-combustible mineral (stone) fibre insulation (Class A1) - Fire breaks not required
  • A2-s1,d0 reaction to fire classification (EN 13501-1:2007+A1:2009)
  • Fire tested in accordance with BS 8414 - compliant with BR 135; can be used on buildings over 18m
  • Adhesively bonded and mechanically fixed insulation: Resistant to wind loads
  • Mechanically anchored reinforcement layer: Provides enhanced resistance to wind loading and additional structural stability in fire.
  • Low embodied energy.
  • Thermal conductivity: 0.036 W/mK
  • BRE Global Certification 158/12
  • BIM Level 2 compliant (NBS BIM Library)
  • Ecopoints Score of 0.10 (m2) - Excellent Rating
  • Acoustic benefit over other insulant types

Environmental & Quality Standards

  • The system is manufactured and supplied in accordance with BS EN ISO 9001 (Quality Management)
  • The system is manufactured and supplied in accordance with BS EN ISO 14001 (Environmental Management)
  • Mineral Fibre insulation is manufactured to EN 13162 and is CFC and HCFC free
  • The insulation has zero Ozone Depletion Potential (zero-ODP) and zero global warming potential (GWP)
  • Recycling facility for uncontaminated insulation boards is available for site waste
  • Ecopoint Rating m² – 0.10: Excellent Rating
  • Low U-Values are achievable in order to meet or exceed Code for Sustainable Homes, BREEAM and Passivhaus standards, etc
  • Green Guide to Specification A Rating achievable
  • Extremely airtight façades can be achieved