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Saint-Gobain Insulation UK

Thermal insulation suitable for rectangular metal ductwork.

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  • Insulation of rectangular metal ductwork inside a building.

Consult manufacturer for installation details.


ISOVER CLIMCOVER Slab Alu2 is a robust glass mineral wool slab which provides a cost effective thermal and acoustic insulation for rectangular metal ductwork. It features a factory-applied aluminium foil facing providing an inherent vapour barrier and a professional finish.

Features and benefits:

  • 1200 x 600 mm glass mineral wool slab with an aluminium foil facing.
  • Supplied in 40–50 mm thicknesses.
  • Manufactured from up to 75% recycled glass.
  • Achieves an A+ generic rating within the BRE Global Green Guide.
  • Helps to meet thermal building regulations and offers energy savings by protecting the installation from external thermal variation.
  • Noise levels from ducts can be reduced due to the inherent acoustic properties of CLIMCOVER, improving the comfort of those living or working within the building.
  • A factory applied aluminium foil facing provides an inherent vapour barrier and a professional finish.
  • Ease of install - lightweight and offers a combination of flexibility and mechanical strength, allowing fast and efficient fitting.
  • The lightweight slabs have a uniform shape and consistent thickness that makes them easy to handle and install on rectangular ductwork, allowing a professional finish.
  • The slabs are designed to withstand site conditions, storage and transportation.


  • Insulation of rectangular metal ductwork inside a building.

Consult manufacturer for installation details.

General information

Uniclass 2015

Pr_80_77_76_53 Mineral wool duct slab insulationPrimary


U90/490 Site-applied insulation to ductwork

U90/58 Site-applied insulation to ductwork

Specification data - Mineral wool duct slab insulation

Product Reference



40 mm

50 mm

Standard product features


Euroclass A2 s1, d0 Reaction to Fire classification, according to BS EN 13501-1.

Declared thermal conductivity:

  • 0.032 W/m.K at 10°C mean temperature.
  • 0.036 W/m.K at 40°C mean temperature..
  • 0.038 W/m.K at 50°C mean temperature.
  • 0.045 W/m.K at 100°C mean temperature.
  • 0.049 W/m.K at 120°C mean temperature.

Service temperature:

Suitable for continuous service temperatures from 5°C to 150°C. The temperature on the aluminium facing should not exceed 80°C. For applications over 150°C, contact manufacturer's technical support centre. When using the product for the insulation of ductwork with a surface temperature below dew point, care must be taken to ensure a 100% vapour barrier is maintained.


  • Manufactured under Environmental Management System - ISO 14001.
  • Zero Ozone Depletion Potential (ODP) and Global Warming Potential (GWP) <5.
  • The manufacturing process does not use or contain CFCs, HCFCs or other damaging gases.
  • “BES 6001 Rating “Good” - The Framework Standard for Responsible Sourcing.


Manufactured under Quality Management System - ISO 9001.

Building regulations:

Helps to meet thermal building regulations. Compliance with the following:

  • England, Wales and Scotland: BS 5422: 2009 or TIMSA Guidance for Achieving Compliance with Part L of the Building regulations.
  • For Scotland, also refer to Technical Handbooks; Domestic Handbook 2010 and Non-Domestic Handbook 2010 Sections 6 – Energy.


ISOVER CLIMCOVER Slab Alu2 corresponds to the BRE Global Green Guide online generic specification for glass wool insulation ref 815320004 which achieves a summary rating of A+ within Domestic, Health, Industrial, Commercial, Retail, Education.

Recycled content:

ISOVER CLIMCOVER Slab Alu2 is manufactured from up to 75% recycled glass.

Handling, storage, health and safety:

Information regarding storage, installation and handling of ISOVER products, or health and safety information, can be found on the manufacturer's website.

Environmental information

Recycled content

ISOVER CLIMCOVER Slab Alu2 is manufactured from up to 75% recycled glass

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