# PIR Partial Fill Cavity Board – 100 × 1200 × 450mm – 4 per Pack

Ballytherm is a strong, rigid board insulation designed to provide reliable thermal performance across a wide range of construction applications. Its foil-faced polyisocyanurate (PIR) construction makes it particularly suitable for damp environments such as basements, as well as areas where enhanced flame resistance is beneficial, including separating elements between apartment units.

Manufactured using a continuous foaming process, Ballytherm forms a tight closed-cell structure with an inseparable bond between the foil facing and insulation core, helping to deliver long-term durability and consistent thermal efficiency. Suitable for use in walls, floors, and roofs, it offers an effective insulation solution for both new build and refurbishment projects.

## Details

- **Price:** 49.68 GBP
- **Vendor:** UNILIN INSULATIONS UK LTD (XTRATHERM)
- **Type:** Insulation Boards
- **Tags:** Building Materials, Cavity Board, Insulation, Insulation Boards

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 49.68 GBP | In stock |

## Images

- PIR Partial Fill Cavity Board – 100 × 1200 × 450mm – 4 per Pack

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> Source: [Carvers Building Supplies](https://www.carvers.co.uk/products/insulation-cavity-board-pir-partial-fill-100mm-x-1200-x-450mm-4-per-pk-rigid-sold-per-pack-400077515)
> Updated: 2026-06-08