Kingspan Thermaroof TR26 25mm Flat Roof Board

Discover the Kingspan Thermaroof TR26, a high-performance PIR insulation board engineered for flat roof applications. This product delivers exceptional compatibility with mechanically-fixed, single-ply waterproofing systems and integrates seamlessly with green roof installations. Ideal for both new construction and refurbishment work, the 25mm TR26 offers straightforward installation and rapid deployment for accelerated building schedules.

Product Specification

Brand: Kingspan®

Model: 25mm TR26 Thermaroof

Thickness: 25mm

Length: 2400mm

Width: 1200mm

Weight: 1.11kg/m2

Board Coverage: 2.88m2

Pack Coverage: 34.56m2

Pack Quantity: 12 sheets

R-Value: 1.15m2K/W

Thermal Conductivity: 0.022 W/mK

Dimensions: 2,400mm x 1,200mm x 25mm

Colour: Light Yellow | Silver

Compressive Strength: 150kPa

Vapour resistivity: 100

Density: 32kg/m3

Material: PIR Insulation Polyisocyanurate (rigid polyurethane foam PU)

Profile: Square edge

Finish: Low emissivity composite foil facings

Applications: Used for flat roofs waterproofed with mechanically fixed single-ply waterproofing.

BBA Certified: Yes

Features: Fully compatible with flat roof waterproofing and green roof systems

Key Features:

1. Superior thermal performance: The 25mm Thermaroof TR26 ranks among the most thermally efficient flat roof insulation products available, delivering substantial energy conservation benefits.
2. Mechanically-fixed, single-ply waterproofing compatibility: Engineered to work with the majority of mechanically-fixed, single-ply waterproofing systems, this board provides a flexible solution for diverse roofing specifications.
3. FM Approval to FM 4470: This insulation carries FM Approval to FM 4470, confirming its performance and quality against recognised industry benchmarks.
4. Simple handling and installation: The TR26 features an intuitive design that simplifies handling and installation, streamlining project timelines and reducing labour complexity.
5. Suitable for new build and refurbishment: This product accommodates both new construction and refurbishment scenarios, delivering a dependable solution across multiple project types.
6. Tapered insulation system option: Available as a tapered insulation system, the Thermaroof TR26 enables roof slope creation for optimal drainage and water management.

Roof Waterproofing

The 25mm Kingspan Thermaroof TR26 performs effectively with most mechanically fixed single–ply waterproofing membranes.

Water Vapour Control

Installation Guidelines: New Build Roofs: For new build roof installations of Kingspan Thermaroof® TR26, employ a dedicated vapour control layer unless the product is being used with a sealed metal deck. A condensation risk analysis must be completed for each specific project to confirm correct installation.

Refurbishment Projects with Existing Insulated Flat Roofs or Insulated Steel Faced Composite Panels: When adding roof insulation to existing insulated flat roofs or insulated steel faced composite panel roofs during refurbishment, conduct a U-value calculation and condensation risk analysis. These evaluations determine the correct insulation thickness for meeting thermal requirements whilst preventing interstitial condensation.

Installation over Existing Bituminous Waterproofing Roof Membrane: When installing Kingspan Thermaroof® TR26 over an existing bituminous waterproofing membrane in refurbishment work, the membrane can function as a vapour control layer if it remains in good watertight condition. Where the membrane is compromised, install a separate vapour control layer.

Minimum Requirements for Separate Vapour Control Layer: A dedicated vapour control layer should comprise a 1000 gauge (250 micron) polythene sheet. All joints require lapping and sealing with double-sided self-adhesive tape for optimal performance.

Info

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