Isover UniSlab

UniSlab is a multi-purpose glass mineral wool slab. It can be considered for use in the thermal insulation of pitched roofsat joist level and solid walls within an internal wall lining system. Theslabs are sized to be easily friction fitted between standard stud spacing.

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Product Features

  • 400mm or 600mm wide glass mineral wool slab
  • Manufactured from up to 82% recycled glass
  • Achieves Eurofins Gold certification, the highest accreditation for indoor air quality

Fire Classification

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

Product Specification

Thickness (mm) Length (mm) Width (mm) λD Declared thermal conductivity (W/m.K) RD Declared thermal resistance (m².K/W)
50 1200 600 0.036 1.35
50 1200 400 0.036 1.35
75 1200 600 0.036 2.05
100 1200 600 0.036 2.75
100 1200 400 0.036 2.75
140 1200 600 0.036 3.85
140 1200 400 0.036 3.85

Product Benefits

  • Thermal Performance - Thermal conductivity of 0.036 W/m.K. Helps to reduce heat loss within the building envelope and decrease energy costs.
  • Fire Classification - Achieves a Euroclass A1 Reaction to Fire classification, according to EN 13501-1.
  • Sustainability - Manufactured from up to 82% recycled glass on a plant that uses 100% renewable electricity. For further details visit
  • Easy to Install - The slabs have an easy friction-fit installation and are available in 600 and 400 mm widths to suit common stud centres, with little waste or cutting.

Key Considerations

When using Isover UniSlab, 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 and applicable height restrictions.