# Isover Cavity Wall Insulation Hi‑Cav – 1200 × 455mm

This glass mineral wool full-fill cavity slab is designed to provide effective thermal insulation in masonry cavity wall applications, helping buildings meet the requirements of Part L Building Regulations in England and Wales. Suitable for full-fill cavity wall systems, it improves thermal efficiency by reducing heat loss through external walls while supporting long-term energy performance.

Manufactured from durable glass mineral wool, it offers reliable thermal performance along with additional fire resistance and breathability within the wall structure. Its design makes it suitable for a wide range of residential and commercial construction projects where efficient cavity wall insulation is required.

## Details

- **Price:** 40.08 GBP - 47.29 GBP
- **Vendor:** SAINT-GOBAIN ISOVER
- **Type:** Cavity Wall Insulation
- **Tags:** Building Materials, Cavity Wall Insulation, Insulation, Local

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| 100mm / 3.28m² | 40.40 GBP | In stock |
| 150mm / 2.18m² | 40.08 GBP | In stock |
| 125mm / 2.73m² | 47.29 GBP | In stock |

## Images

- Isover Cavity Wall Insulation Hi‑Cav – 1200 × 455mm
- Isover Cavity Wall Insulation Hi‑Cav – 1200 × 455mm

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> Source: [Carvers Building Supplies](www.carvers.co.uk/products/insulation-cavity-wall-hi-cav-1200x455x100mm-cws32-3-28m2-per-pk-isover-15-per-pallet)
> Updated: 2026-06-16