70mm Kingspan Thermaroof TR26 Flat Roof Board

Discover 70mm Kingspan Therma TR26, a high-performance PIR insulation board engineered for flat roof applications. This board delivers exceptional thermal efficiency whilst remaining compatible with mechanically-fixed, single-ply waterproofing systems and green roof installations. Ideal for both new construction and refurbishment work, the TR26 offers straightforward installation and rapid deployment on fast-track projects, making it an excellent choice for roof insulation requirements.

Product Specification

Brand: Kingspan®

Model: 70mm TR26 Thermaroof

Thickness: 70mm

Length: 2400mm

Width: 1200mm

Weight: 25.80kg

Board Coverage: 2.88m2

Pack Coverage: 11.52m2

Pack Quantity: 4 sheets

R-Value: 3.15 m2K/W

Thermal Conductivity: 0.022 W/mK

Dimensions: 2,400mm x 1,200mm x 70mm

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 70mm Therma TR26 delivers outstanding thermal efficiency for flat roof applications, maximising energy conservation benefits.
2. Mechanically-fixed, single-ply waterproofing compatibility: Engineered to work seamlessly with the majority of mechanically-fixed, single-ply waterproofing systems, providing flexible roofing solutions.
3. FM Approval to FM 4470: This product meets FM Approval to FM 4470 standards, guaranteeing quality and performance in accordance with industry specifications.
4. Simple handling and installation: The TR26 is designed for straightforward handling and installation, streamlining project timescales and reducing labour complexity.
5. New build and refurbishment applications: Suitable for both new construction and existing building upgrades, offering a dependable insulation solution across diverse project types.
6. Tapered insulation system availability: The Therma TR26 can be supplied as a tapered insulation system, enabling proper roof slope creation for effective drainage and water management.

Roof Waterproofing

70mm Kingspan Thermaroof TR26 performs effectively with most mechanically fixed single–ply waterproofing membranes.

Water Vapour Control

Installation Guidelines: New Build Roofs: For new build flat roof installations using Kingspan Thermaroof® TR26, a separate vapour control layer is typically recommended unless the board sits directly on a sealed metal deck. A condensation risk assessment should be completed for every project to confirm correct installation practice.

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, a U-value calculation and condensation risk assessment are essential. These analyses determine the correct insulation thickness for meeting thermal requirements whilst preventing interstitial condensation.

Installation over Existing Bituminous Waterproofing Roof Membrane: When Kingspan Thermaroof® TR26 is installed over an existing bituminous waterproofing membrane during refurbishment, the membrane can function as a vapour control layer provided it remains in good watertight condition. Should the membrane be compromised, a separate vapour control layer must be installed.

Minimum Requirements for Separate Vapour Control Layer: Where a separate vapour control layer is required, use a 1000 gauge (250 micron) polythene sheet. All joints must be overlapped and sealed with double-sided self-adhesive tape for optimal performance.

Info

Browse our full Kingspan range and refine by thickness or coverage using the left-hand filters. For product suitability advice on your specific project or to request a bulk discount quotation, contact us on +4402038839057 , email sales@insulationbee or use Live Chat - Lowest UK Insulation Prices.