Celotex Isover

ISOVER U Protect Slab 4.0 Alu1

U Protect Slab 4.0 Alu1 is a lightweight and easy to install ULTIMATE™ mineral wool slab. It combines all the advantages of conventional thermal and acoustic insulation with excellent fire performance and is a component of the U Protect System.

The U Protect system has been tested in accordance to EN 1366-1 and EN 1366-8 and assessed against the criteria in BS 476: Part 24. It offers up to 2 hours passive fire protection in HVAC ventilation and smoke extract ducts as well as up to 1 hour passive fire protection for kitchen ducts.

The fire resistance is also dependent on the application, thicknesses of insulation and the method of installation. 
Please contact technicalsupport@saint-gobain.com for further details.

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Product Features

  • ULTIMATE™ mineral wool 600 x 1200mm slab with a black aluminium foil facing 
  • Supplied in 30-100mm thicknesses

Fire Classification

Euroclass A1 Reaction to Fire classification according to EN 13501-1

Product Specification

Thickness (mm) Length (mm) Width (mm) Pack area (m²) Pallet area (m²)
30 1200 600 9.36 112.32
40 1200 600 7.20 86.40
50 1200 600 5.76 69.12
60 1200 600 4.32 51.84
70 1200 600 3.60 43.20
80 1200 600 3.60 43.20
90 1200 600 2.88 34.56
100 1200 600 2.88 34.56

Thermal Conductivity

Mean temp °C 10 50 100 150 200 300 400
Declared thermal conductivity (W/m.K) 0.031 0.035 0.040 0.047 0.054 0.072 0.096

Product Benefits

  • Fire Protection - The U Protect system has been tested in accordance to EN 1366-1 and EN 1366-8 and assessed against the criteria in BS 476: Part 24. It offers up to 2 hours passive fire protection in HVAC ventilation and smoke extract ducts as well as up to 1 hour passive fire protection for kitchen ducts.1
  • Easy to Install - The ULTIMATE™ slabs offer a lightweight solution compared to traditional stone wool options, ensuring ease of handling and installation, as well as reducing the stress on supporting structures. Their flexibility and mechanical strength allows fast and efficient cutting and fitting. The adhesive used in the system is only required at penetration details rather than at every insulation joint.
  • Fire Classification - Achieves a Euroclass A1 Reaction to Fire classification, according to EN 13501-1.
  • Thermal Performance - Offers energy savings through helping to control temperatures and reduce heat loss or gain within ductwork.
  • Acoustic Benefits - The inherent sound deadening properties of the ULTIMATE™ mineral wool insulation will help to reduce noise from ductwork, improving the acoustic comfort of those living or working within the building.   
         1 Fire resistance is dependent on the application, thicknesses used and method of installation.
          Please contact technicalsupport@saint-gobain.com for further details.

Key Considerations

When using ISOVER U Protect Slab 4.0 Alu1, 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: