NBS Source
Isover CLIMCOVER Slab Alu2 Standard


  • HVAC - Ductwork


CLIMCOVER Slab Alu2 Standard is a robust glass mineral wool slab which can be considered for the thermal and acoustic insulation of rectangular metal ductwork. The slabs are lightweight and feature a factory applied aluminium foil facing providing an inherent vapour barrier and a professional finish.

With increased mechanical performance, it offers a high quality finish and can be considered for applications inside a building or outside (with suitable covering).

Product Features

  • 1200 x 600mm glass mineral wool slab with an aluminium foil facing
  • Manufactured from up to 75% recycled glass
  • Achieves an A+ generic rating within the BRE Global Green Guide
  • Achieves Eurofins Gold certification, the highest accreditation for indoor air quality

Fire Classification

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

Product Benefits

  • Thermal Performance - Offers energy savings through helping to control temperatures and reduce heat loss or gain.
  • Easy to Install - Lightweight and offers a combination of flexibility and mechanical strength, allowing fast and efficient cutting and fitting. It offers consistent thickness recovery and a uniform shape with no soft edges, to obtain a neat and professional finish.
  • Acoustic Benefits - The fibre structure of glass mineral wool traps sound energy and dissipates it within its thickness, helping to improve the acoustic comfort of those living or working within the building.
  • Fire Classification - Achieves a Euroclass A2-s1,d0 Reaction to Fire classification, according to EN 13501-1.
  • Sustainability - Achieves a BRE Green Guide rating of A+ which can assist in demonstrating environmental performance in your BREEAM assessments. Manufactured from up to 75% recycled glass on a plant that uses 100% renewable electricity. For further details visit insulation-uk.com/CSR

Key Considerations

When using Isover CLIMCOVER Slab Alu2 Standard, you need to satisfy yourself that use of the product meets all relevant national Building Regulations and guidance as well as local, national and other applicable standards relevant for your construction or application, including requirements in relation to fire.

Please refer to the following product documents:

  • Product Datasheet
  • Declaration of Performance
  • Safe Use Instruction Sheet

General information






Glass mineral wool





1200 mm


600 mm


Pr_80_77_76_53 Mineral wool duct slab insulationPrimary


U90/490 Site-applied insulation to ductwork

U90/490 Site-applied insulation to ductwork

Specification data - Mineral wool duct slab insulation Enhanced data


To EN 14303.


Flexible slabs.

Recycled content

Up to 75%.

Thermal conductivity

0.032–0.049 W/m.K (10–120°C).

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


Aluminium foil faced.

Reaction to fire classification

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

Insulation thickness (minimum)

40 mm.

50 mm.

Vapour barrier



Aluminium foil.

Items to be insulated



Installing foil faced mineral wool insulation on ductwork.

Product Reference


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, please contact our 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.


Compliance with Building Regulations Part H

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.


BREEAM rating

ISOVER CLIMCOVER Slab Alu2 Standard 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.



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

Manufacturer's standard.

Third party product certification

BES 6001 Rating “Good”; BRE Global Green Guide Rating A+; ISO 14001; ISO 9001.


  • 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.

Environmental information

Recycled content

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

75 %

Third party certifications


Declaration of Performance (DoP) : CLIMCOVER Roll Alu2, CLIMCOVER Roll Alu2 Strong, CLIMCOVER Slab Alu2, CLIMCOVER Slab Alu2 Standard

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