Unilin Cavity Wall Insulation 80mm T&G PIR | XT/CW Thin-R Board

Unilin Cavity Wall Insulation Tongue & Groove 80mm

Key features:

  • High-performance PIR tongue & groove cavity wall insulation
  • 80mm thick boards
  • Engineered tongue & groove system for continuous insulation
  • Designed for thermal efficiency and to minimise thermal bridging
  • Suitable for professional installation in accordance with building regulations and system guidance

Minimum Order Quantity: 5 packs

€65.09
Bulky Product
Delivery in
12-14 Days
SKU
ICTXT1.2X450X80
Brand
Unilin

Unilin Thin-R XT/CW (T&G) is a partial fill cavity wall insulation board system designed for traditional masonry cavity walls.

It uses engineered tongue and groove joints and pre-formed corner solutions to ensure insulation continuity and minimisation of thermal bridging within the cavity wall construction.

XT/CW (T&G) is designed for use in traditional masonry walls and achieves high thermal performance while maintaining a residual cavity, providing protection against wind-driven rain.

The system forms part of a complete cavity wall insulation solution and can be used alongside optional cavity closers and pre-formed corner panels. We can also supply cavity closers suitable for use with cavity wall insulation.

Features:
  • Minimum order quantity: 5 packs
  • PIR tongue & groove cavity wall insulation system
  • 80mm thick boards
  • Board size: 1200mm x 450mm x 80mm
  • Robust tongue & groove jointing for continuous insulation layer
  • Pre-formed corner compatibility (XT/CRN) for reduced thermal bridging
  • Corner panels & cavity closers available for thermal bridge reduction
  • Clear residual cavity maintained (typically 50mm recommended in accordance with certification guidance)
  • Low emissivity foil facings
  • Compressive strength: >120 kPa (CIS(10/Y)120)
  • Reaction to fire: Euroclass F
  • Part of the Unilin Thin-R cavity wall insulation system
Thermal Performance:
  • Thermal conductivity: 0.022 W/m·K (EN 13165)
  • Thermal resistance (80mm): 3.60 m²K/W
  • Typical U-value (80mm cavity wall construction): approx. 0.21 W/m²K (dependent on wall build-up)
Downloads:

If you require very large quantities then you can call us on 0818 888 000 for a quotation.

System Overview:

Thin-R Partial Fill Cavity Wall XT/CW (T&G) is a system solution using engineered tongue and groove joints and pre-formed corners to ensure insulation continuity and minimise thermal bridging.

XT/CW (T&G) maintains a residual cavity which is the air space between the insulation board and outer leaf. This helps maintain the wall’s resistance to wind-driven rain penetration.

Recommended residual cavity width is 50mm in accordance with agrément certification, although reduced cavities may be permissible depending on design and conditions.

Installation, Handling & Storage:
  • Store boards off the ground on a clean, flat surface and keep undercover
  • Polythene wrapping is not sufficient protection for outdoor exposure
  • Protect insulation during storage and construction
  • Cut using a sharp knife or fine-toothed saw
  • Ensure tight fitting of boards to maintain insulation continuity
  • Appropriate PPE should be worn when handling insulation
  • Refer to Health & Safety data sheets from the manufacturer
  • Each pack is labelled with grade, type, size and quantity
  • Avoid contact with acids, petrol, alkalis and mineral oils. If contact occurs, clean safely before installation.
Durability:

Unilin products are stable, rot proof and designed to remain effective for the life of the building when correctly specified and installed.

Ordering & Delivery Information:
  • Minimum order quantity: 5 packs
  • Nationwide delivery available (12–14 days)
  • Bulk delivery surcharge applies (calculated at checkout)
  • Large volume orders may qualify for improved delivery rates or quotations
Support:

If you need help with this Unilin cavity insulation system, call our team on 0818 888 000 for assistance.

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