Superwall 32 Cavity Wall Batt


Superglass Superwall 32 is a British Board of Agrément (BBA) approved, non-combustible and water repellent glass mineral wool insulation cavity wall batt. The flexible batt is supplied at 455mm wide to allow easy installation between standard vertical wall tie spacings, reducing the need for on-site cutting and waste.


Superglass Superwall 32 is designed to provide thermal insulation in full or partial fill in new external masonry cavity walls, up to 25 metres in height for full fill and without restriction for partial fill in buildings of a domestic and non-domestic nature (additional requirements apply for buildings above 12 metres in height for full fill and above 25 metres in height for partial fill, please refer to the product BBA certificate for more information).

Superwall 32 is BBA approved for use in all UK exposure zones (subject to conditions detailed in the BBA Certificate).


Thermal Conductivity:

Declared thermal conductivity (lambda (λ) value) of 0.032W/mK.

Fire Classification:

Deemed non-combustible with a fire classification of Euroclass A1 (the highest possible rating) when tested to BS EN 13501-1 Reaction to Fire.

If you require historical versions of product documentation, or documents relating to any discontinued products, please contact Superglass at




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Product Features

Thermal Insulation
Thermal Insulation
Recycled Content
Recycled Content
BRE Green Guide Rating
BRE Green Guide Rating
Easy To Fit
Easy To Fit
Product Specification
Thickness (mm)Length (mm)Width (mm)Batts per packPack Area (m²)Thermal Conductivity (W/mK)Thermal Resistance (m²K/W)Packs per palletProduct Code

NBS Specification

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Thermal Conductivity

Declared thermal conductivity (lambda (λ) value) of 0.032W/mK.

Fire Classification

Deemed non-combustible with a fire classification of Euroclass A1 (the highest possible rating) when tested to BS EN 13501-1 Reaction to Fire.

Vapour Resistivity

The product has a nominal vapour resistivity of 5 MNs/gm.

Below DPC level

Constructions incorporating the product and built in accordance with the Standards listed in section 4.4 of BBA Certificate 89/2231 Product Sheet 3, will resist the transfer of precipitation to the inner leaf and satisfy the national Building Regulations.

Water Resistance

The product may be used in situations where it bridges the DPC in walls; dampness from the ground will not pass through to the inner leaf provided the wall is detailed in accordance with the requirements and provisions of the national Building Regulations. Please refer to product
BBA certificate for more information.

Environmental credentials

  • ISO 14001 – Environmental Management Systems (EMS) certified. Certificate number: EMS 646508.
  • Contains no ozone-depleting substances or greenhouse gases. For more information, please refer to the Environmental Product Declaration (EPD).
  • Manufactured from up to 84% recycled glass.
  • Generic BRE Green Guide Rating of A+.

Standards and Approvals

Manufactured in accordance with:

  • BS EN 13162:2012(+A1:2015) Thermal insulation products for buildings – Factory made mineral wool (MW) products.
  • BS EN 13172: 2012 Thermal insulation products – Evaluation of conformity.
  • BS EN ISO 9001 – Quality Management Systems (QMS). Certificate number: FM 02264.


  • UKCA certified to BS EN 13162:2012+A1:2015. Certificate number: 0086 CPR 469699.
  • CE marked to EN 13162:2012+A1:2015. Certificate number: 0751-CPR-399.0-01.
  • BBA certified for full and partial fill applications. Certificate number: 89/2231.

Handling & Storage

Due to its physical characteristics, Superwall 32 is quick and easy to handle and install.

The product is supplied compression packed in polythene to provide short term protection only. For long term protection, the product must be stored indoors, or under a waterproof covering and off the ground to protect from weather damage. The product should not be left permanently exposed to the elements.

All Superglass products are non-hygroscopic, will not rot, degrade, or sustain vermin and will not encourage the growth of mould, bacteria, or fungi.