Unilin FR/TP 46mm Flat Roof Insulation Board

The 46mm Unilin FR/TP is a composite thermal panel engineered with a Polyisocyanurate core and foil-faced composite layer, firmly adhered to 6mm WBP-grade plywood. This integrated system delivers both superior thermal insulation performance and structural decking capability, making it particularly suited to new-build and flat roof refurbishment schemes.

The 46mm Unilin FR/TP was previously known as 46mm Xtratherm FR/TP.

Product Specification

Brand: Unilin ®

Model: 46mm FR/TP

Dimensions: 2,400mm x 1,200mm x 46mm

Thickness: 40mm PIR + 6mm Plywood (41mm overall)

Length: 2400mm

Width: 1200mm

Weight: 26.43kg

Compressive Strength: 150 kPa (10% Compression)

Density: 32 Kg/m3

Type: High-performance PIR insulation and plywood composite for flat roof applications

Material: Polyisocyanurate core ǀ Plywood

Profile: Square Edge

Thermal Conductivity: 0.022W/mK

R-Value: 1.81m2K/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 roof insulation and structural decking in a single product
2. Appropriate for both new-build and roof refurbishment applications
3. Delivers rapid weatherproofing capability
4. Environmental Product Declaration (EPD) certification from IGBC is obtainable for this product
5. Combined insulation and decking in one installation
6. Suitable for new and refurbishment roof projects
7. Delivers rapid weather protection

Roof Design

Design decisions should align with the guidance set out in BS 4841: Part 3 and the specifications provided by your chosen membrane supplier.

Falls

Flat roof falls must be consistent and sufficiently steep to prevent water pooling and drainage issues.

Info

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