40mm Kingspan TR26 Flat Roof Insulation Board

Discover 40mm Kingspan Therma TR26, a high-performance PIR insulation board engineered for flat roofs. This product delivers exceptional thermal performance and integrates seamlessly with mechanically-fixed, single-ply waterproofing systems and green roof systems. Suitable for both new construction and refurbishment applications, 40mm Kingspan TR26 combines straightforward installation with rapid deployment capabilities, making it ideal for accelerated building schedules and reliable roof insulation solutions.

Product Specification

Brand: Kingspan®

Model: 40mm TR26 Thermaroof

Thickness: 40mm

Length: 2400mm

Width: 1200mm

Weight: 1.4kg/m2

Board Coverage: 2.88m2

Pack Coverage: Min Quantity 1000m2

R-Value: 1.80m2K/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: 40mm Therma TR26 delivers outstanding thermal efficiency for flat roof applications, maximising energy conservation and building performance.
2. Compatibility with mechanically-fixed, single-ply waterproofing systems: This board works effectively with the majority of mechanically-fixed, single-ply waterproofing systems, providing flexibility across different roofing specifications.
3. FM Approval to FM 4470: Certified to FM 4470 standards, ensuring compliance with recognised industry quality benchmarks.
4. Straightforward handling and installation: The product's practical design facilitates quick and efficient installation, reducing on-site labour time and complexity.
5. Suitable for new build and refurbishment: Kingspan Therma TR26 performs reliably in both new construction and refurbishment scenarios, adapting to diverse project requirements.
6. Tapered insulation system option: Available as a tapered system to establish roof slope, promoting effective drainage and water management.

Roof Waterproofing

40mm 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 applied over a sealed metal deck. A condensation risk assessment should be undertaken for each project to confirm appropriate installation practice.

Refurbishment Projects with Existing Insulated Flat Roofs or Insulated Steel Faced Composite Panels: When upgrading existing insulated flat roofs or steel-faced composite panel roofs with additional roof insulation, conduct a U-value calculation and condensation risk assessment. These evaluations determine the correct insulation thickness for achieving target thermal performance whilst preventing interstitial condensation.

Installation over Existing Bituminous Waterproofing Roof Membrane: Where Kingspan Thermaroof® TR26 is applied over an existing bituminous waterproofing membrane in refurbishment work, the membrane can function as a vapour control layer provided it maintains good watertight integrity. If the membrane shows deterioration, install a separate vapour control layer.

Minimum Requirements for Separate Vapour Control Layer: A separate vapour control layer, if required, should comprise a 1000 gauge (250 micron) polythene sheet. All joints must be lapped and sealed using double-sided self-adhesive tape for optimal performance.

Info

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