21mm Unilin FR/TP Thermal Ply Flat Roof Board

21mm Unilin FR/TP is a composite thermal panel featuring a Polyisocyanurate core bonded to 6mm WBP-grade plywood with foil facings. This integrated system delivers both thermal insulation and structural decking performance, making it particularly suited to new-build and refurbishment flat roof applications.

The 21mm Unilin FR/TP was previously known as 21mm Xtratherm FR/TP.

Product Specification

Brand: Unilin ®

Model: 21mm FR/TP

Dimensions: 2,400mm x 1,200mm x 21mm

Thickness: 15mm PIR + 6mm Plywood (21mm overall)

Length: 2400mm

Width: 1200mm

Weight: 21.5kg

Compressive Strength: 150 kPa (10% Compression)

Density: 32 Kg/m3

Type: Thermal Ply High Performance PIR Insulation and Plywood Composite for Flat Roofs

Material: Polyisocyanurate core ǀ Plywood

Profile: Square Edge

Thermal Conductivity: 0.022W/mK

R-Value: 0.69m2K/W

Vapour Resistivity: 100 MNs/gm

Type of finishing board: 6mm WBP plywood

Inner facing: Foil Facer

Outer facing: Foil Facer

Finish: Gas-tight foil ǀ WBP Plywood

Shipping method: Articulated Vehicle ǀ Courier

Applications: Flat Roof Insulation ǀ Hot Bitumen ǀ Decking

Features: Rapid Weather Proofing ǀ 3 in 1 Solution

Key Benefits:

1. Integrates insulation and structural decking into a single product
2. Appropriate for new construction and roof refurbishment schemes
3. Enables swift weatherproofing installation
4. Environmental Product Declaration (EPD) certified by IGBC
5. Combined insulation and decking in one application
6. Suitable for new and refurbished roof systems
7. Delivers rapid weather protection

Roof Design

Refer to BS 4841: Part 3 recommendations and the certification requirements specified by your chosen membrane manufacturer.

Falls

Flat roofs must incorporate consistent falls sufficient to prevent water pooling and ensure proper drainage.

Info

Explore our full range of Unilin products with thickness and coverage filtering options available. For technical advice on product suitability, quantity discounts, or project specifications, contact our team by phone on +4402038839057, email sales@insulationbee, or use our Live Chat service for competitive UK Insulation pricing.