75mm Unilin FR/ALU Flat Roof Insulation Board

75mm Unilin FR/ALU, previously known as 75mm Xtratherm FR/ALU, delivers premium-grade Polyisocyanurate flat roof insulation with dual-sided vapor-tight aluminium foil facings. This product integrates seamlessly with single-ply membranes and forms part of Unilin's comprehensive range of high-performance flat roof boards for complete flat roof solutions.

Product specification

Brand: Unilin Insulation FR/ALU (formerly Xtratherm FR/ALU)

Model: 75mm Unilin FR/ALU

Thickness: 75mm

Thickness: 25mm, 30mm, 40mm, 50mm, 60mm, 70mm, 75mm, 80mm, 90mm, 100mm, 110mm, 120mm, 125mm, 130mm, 140mm, 150mm

Length: 2400mm

Width: 1200mm

Board Coverage: 2.88m2

Pack Coverage: 11.52m2

Pack Quantity: 4 sheets

Pack Weight: 28 kg

Dimensions: 2,400mm x 1,200mm x 75mm

Thermal Conductivity: 0.022 W/mK

R-Value: 3.18 m2K/W

Colour: Light yellow

Density: 32 Kg/m3

Compressive Strength: > 150kPa

Material: Polyisocyanurate Rigid Foam ( PIR insulation board )

Profile: Square Edge

Fire Reaction: Euroclass B, s2-d0

Finish: Vapour resistant gas-tight foil

Inner facing: Foil Facing

Outer facing: Foil Facing

Applications: Flat Roof Waterproofing Systems

BBA Certified: Yes (No. 11/4817)

Fixing method: Mechanically fixed single ply waterproofing systems

Foil faced: Yes, gas-tight foil facings on both sides

Features: Composite gas-tight foil facings on both sides

Manufacturer: Unilin Insulation®

Main Highlights:

1. Exceptional Thermal Efficiency
2. Foil facers providing effective vapor resistance
3. Suitable for mechanically fixed single-ply systems
4. This product has an Environmental Product Declaration (EPD) certified by IGBC. For additional information, please reach out to our technical support.

Advantages:

1. Exceptional Thermal Efficiency
2. Compatibility with mechanically fixed single-ply systems and loose-laid ballasted systems
3. Effective vapor resistance with foil facers
4. The product comes with an Environmental Product Declaration (EPD) certified by IGBC. For more information, please contact our technical support team.

About

The 75mm Unilin FR/ALU Flat Roof Insulation Board combines rigid polyisocyanurate foam with gas-tight foil facings on both surfaces, delivering a robust PIR insulation board solution.

Engineered for thermal insulation and slope creation on limited-access concrete, timber, or steel flat roof decks in new and refurbished properties, this 75mm board offers dual functionality.

When paired with a vapor control layer and mechanically affixed single-ply roof waterproofing membrane, the 75mm Unilin FR/ALU Insulation Board performs optimally.

Installation requires laying boards over the vapor control layer in a staggered pattern for comprehensive coverage.

For stability and durability, 75mm Unilin flat roof insulation boards must be secured with approved mechanical fasteners.

Roof Design

Guidance from BS 4841: Part 3 and the Single Ply Roofing Association should inform your roof design approach.

Falls

Flat roof falls should maintain consistent gradient, sloping sufficiently to prevent water pooling.

Fire Performance

Fire rating, assessed under EN 13501-5 and BS 476 Part 3 'External Fire Exposure Roof Test', depends on the waterproofing system selected.

Note: This board was formerly known as 75mm Xtratherm Thin-R FR/ALU Flat Roof PIR Insulation Board

Info

Browse our Unilin collection and refine by thickness or coverage using the left-side filters. For project-specific advice or bulk quotations, contact us on +4402038839057 , email sales@insulationbee or use Live Chat - UK Roof Insulation Board Supplier.