31mm Unilin FR/TP Flat Roof Insulation Board

The 31mm Unilin FR/TP is a composite insulation board featuring a Polyisocyanurate core bonded to 6mm WBP plywood, delivering both thermal performance and structural support. This product integrates thermal insulation with decking functionality, making it an efficient choice for flat roof installations on new builds and renovation projects alike.

The 31mm Unilin FR/TP was previous known as 31mm Xtratherm FR/TP.

Product Specification

Brand: Xtratherm / Unilin ®

Model: 31mm FR/TP

Dimensions: 2,400mm x 1,200mm x 31mm

Thickness: 25mm PIR + 6mm Plywood ( 26mm overall )

Length: 2400mm

Width: 1200mm

Weight: 24.34kg

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: 1.13m2K/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. Merges roof insulation and structural decking into a unified product
2. Applicable to both new construction and roof refurbishment applications
3. Delivers rapid weatherproofing capabilities
4. Environmental Product Declaration (EPD) certification available through IGBC
5. Single-fix solution combining insulation and decking
6. Suitable for new and refurbishment roof projects
7. Rapid weather protection

Roof Design

Guidance from BS 4841: Part 3 and the relevant membrane manufacturer's certification should inform your roof design decisions.

Falls

Flat roofs require consistent falls that are sufficiently steep to prevent water pooling and ensure proper drainage.

Info

Explore our full Unilin range and refine your selection by thickness or coverage using the filters on the left. For technical advice on product suitability, bulk pricing, or project-specific requirements, contact us on +4402038839057, email sales@insulationbee or use Live Chat - Competitive UK Insulation Pricing.