Superglass Superwall 32 Cavity Wall Batt

Superglass Superwall 32 is a high-performance cavity wall insulation solution designed to provide effective thermal protection for new-build external masonry walls. Approved by the British Board of Agrément (BBA), this insulation batt is made from non-combustible glass mineral wool and treated with a water-repellent additive to prevent moisture ingress. Each batt is 455mm wide, which allows for a snug friction fit between standard vertical wall tie spacing. Ideal for building insulation applications, this product helps create an efficient thermal envelope. It also works seamlessly with insulation systems. This thoughtful sizing reduces the need for cutting on-site, making installation faster, cleaner, and less wasteful.

Ideal for Full or Partial Fill Cavity Wall Applications

Superwall 32 is suitable for both full-fill and partial-fill cavity wall insulation in domestic and non-domestic buildings. For full-fill applications, it can be used in walls up to 25 metres high, while there’s no height restriction for partial fill in most buildings. For taller structures—those above 12 metres (full fill) and 25 metres (partial fill)—additional installation requirements apply. Full guidance is available in the BBA certificate, which outlines suitability for use in all UK exposure zones, provided specific conditions are followed.

Thermal & Fire Performance

One of the key strengths of Superwall 32 is its excellent thermal conductivity of just 0.032W/mK, making it an efficient choice for improving energy performance in new buildings. It also holds a Euroclass A1 fire rating, the highest possible classification for non-combustible materials, giving you added peace of mind in terms of fire safety. Superwall 32 is CCPI-assessed (Code for Construction Product Information) and holds certificate number 005800103/1026, reflecting its verified performance and transparency.

Product Sizes & Packaging

Superglass Superwall 32 is available in two thicknesses to suit different insulation requirements: 100mm x 1200mm x 455mm (6 pieces per pack) 150mm x 1200mm x 455mm (4 pieces per pack) Both sizes are lightweight and easy to handle, making installation straightforward on-site.

Frequently Asked Questions

1. Can I use Superwall 32 in all parts of the UK?

Yes, Superwall 32 is **BBA-approved for use in all UK exposure zones**. However, it's important to follow the specific conditions outlined in the BBA certificate—especially for buildings in more extreme weather areas or over certain heights.

2. Is this product suitable for high-rise buildings?

For **full-fill cavity wall applications**, Superwall 32 can be used up to **25 metres in height**. For **partial fill**, there are **no height restrictions** under standard conditions. Additional requirements apply for buildings over 12m (full fill) and 25m (partial fill), so always consult the product certificate for detailed guidance.

3. Is it safe to install, and how does it perform in a fire?

Superwall 32 is made from **non-combustible glass mineral wool** and holds a **Euroclass A1 fire rating**, meaning it offers **maximum fire safety performance**. It’s also **fibre-free and irritation-free**, making it safe and easy to install.

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