Kingspan Thermaroof TR26 135mm Flat Roof Board

Discover the 135mm Kingspan Therma TR26, a high-performance PIR insulation board engineered for flat roof applications. This robust product integrates seamlessly with mechanically-fixed, single-ply waterproofing systems and compatible green roof systems. Ideal for both new-build and refurbishment projects, the 135mm TR26 delivers straightforward installation and handling characteristics. Its proven installation methodology supports rapid construction schedules, delivering dependable performance for roof insulation requirements.

Product Specification

Brand: Kingspan®

Model: 135mm TR26 Thermaroof

Thickness: 135mm

Length: 2400mm

Width: 1200mm

Weight: 4.69kg/m2

Board Coverage: 2.88m2

Pack Coverage: Min quantity 1000m2

R-Value: 5.90 m2K/W

Thermal Conductivity: 0.022 W/mK

Dimensions: 2,400mm x 1,200mm x 135mm

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 135mm Therma TR26 delivers exceptional thermal efficiency for flat roof applications, maximising energy conservation benefits.
2. Single-ply waterproofing compatibility: Engineered for use with mechanically-fixed, single-ply waterproofing systems, this product provides flexible solutions across diverse roofing specifications.
3. FM Approval to FM 4470: This insulation carries FM Approval to FM 4470, confirming compliance with recognised industry performance standards.
4. Practical installation characteristics: Straightforward handling and installation procedures ensure efficient project execution and minimal on-site complications.
5. Versatile project application: Suitable for both new construction and refurbishment work, the 135mm Kingspan Therma accommodates varied building scenarios with consistent performance.
6. Tapered system availability: Available as a tapered insulation system, enabling controlled roof slope creation for effective drainage and moisture management.

Roof Waterproofing

The 135mm Kingspan Thermaroof TR26 performs reliably 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, a separate vapour control layer is typically recommended unless the product is applied over a sealed metal deck. Each project should include a condensation risk assessment to confirm appropriate installation methodology.

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, U-value calculations and condensation risk analysis are mandatory. These evaluations establish the correct insulation thickness for meeting thermal requirements whilst preventing interstitial condensation.

Installation over Existing Bituminous Waterproofing Roof Membrane: For refurbishment applications where Kingspan Thermaroof® TR26 is placed over existing bituminous waterproofing membranes, the existing membrane may function as a vapour control layer provided it maintains watertight integrity. Where membrane condition is compromised, a separate vapour control layer must be installed.

Minimum Requirements for Separate Vapour Control Layer: Where a separate vapour control layer is required, specify 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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