Unilin Cavity Wall Insulation 60mm T&G PIR | XT/CW Thin-R Board

Unilin Cavity Wall Insulation Tongue & Groove 100mm

Key features:

  • High-performance PIR tongue & groove cavity wall insulation
  • 100mm thick boards with 2.16 m² coverage per bale
  • Robust T&G jointing reduces thermal bridging and improves continuity
  • Maintains a clear residual cavity for wind-driven rain protection
  • Low emissivity foil facings for improved thermal efficiency

Minimum Order Quantity: 5 items

€53.97
Bulky Product
Delivery in
12-14 Days
SKU
ICTK1.2X450X100
Brand
Unilin

Unilin Thin-R XT/CW (T&G) is a partial fill cavity wall insulation board designed for traditional masonry cavity walls. It uses engineered tongue and groove joints and pre-formed corner solutions to ensure insulation continuity, reduce thermal bridging, and maintain a clear residual cavity for protection against wind-driven rain.

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

The system forms part of a complete cavity wall insulation solution and can be used alongside optional cavity closers and pre-formed corner panels.

Features:
  • High-quality PIR tongue & groove cavity wall insulation
  • 100mm thick boards
  • 2.16m² coverage per bale
  • 4 boards per bale
  • Board size: 1200mm x 450mm
  • Robust tongue & groove jointing for tight installation
  • Pre-formed corner compatibility (XT/CRN) to reduce thermal bridging
  • Clear residual cavity maintained
  • Low emissivity foil facings to improve thermal performance
  • No exposure restrictions
  • Suitable for tradespeople and DIY installation
  • Part of the Unilin Thin-R cavity insulation system
  • Compressive strength: >120 kPa
  • Reaction to fire: NPD
  • See the Product Brochure and Installation Instructions here
  • See the Declaration of Performance here
  • If you require very large quantities then you can call us on 0818 888 000 for a quotation.
Technical Performance:
  • Thermal conductivity: 0.022 W/m·K (BS EN 13165:2008)
  • Thermal resistance (100mm): 4.50 m²K/W
  • Compressive strength: >120 kPa
  • Reaction to fire: NPD / Euroclass F (as declared)
  • Material: PIR (Polyisocyanurate) insulation
System Benefits:

The XT/CW (T&G) system is designed to create a continuous insulation layer using engineered tongue and groove joints, improving installation consistency and reducing thermal bridging.

Pre-formed corner panels and cavity closers help reduce cold spots at junctions, improving overall thermal performance of the wall.

The system maintains a residual cavity, which is the air space between the insulation board and outer leaf. This is essential for protecting against wind-driven rain penetration.

Recommended residual cavity width is 50mm in accordance with agrément certification, although reduced cavities may be acceptable depending on specification.

Low emissivity foil facings further enhance thermal efficiency by reflecting heat back into the building.

Installation, Handling & Storage:
  • Store boards off the ground on a clean, flat surface
  • Store undercover – polythene wrapping is not sufficient protection outdoors
  • Protect insulation during storage and construction
  • Cut using a sharp knife or fine-toothed saw
  • Ensure tight-fitting joints for thermal continuity
  • Appropriate PPE should be worn when handling insulation
  • Refer to manufacturer Health & Safety data sheets
  • Boards are supplied in labelled polythene packs showing grade, size, and quantity
  • Avoid contact with acids, petrol, alkalis, and mineral oils
Durability:

Unilin PIR insulation boards are stable, rot-proof, and designed to perform for the lifetime of the building when correctly specified and installed.

Care should be taken to avoid contact with acids, petrol, alkalis, and mineral oils. If contamination occurs, clean safely before installation.

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
  • For large quantities call: 0818 888 000
Additional Information:
  • XT/CW (T&G) builds a system-based insulation solution using tongue and groove continuity and pre-formed components
  • Helps improve overall U-values of cavity wall construction
  • Minimises thermal bridging through continuous insulation layer
  • Maintains compliance with cavity wall performance requirements
Support:

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

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