90mm Unilin Thin-R FR/ALU Flat Roof PIR Insulation Board (pack of 4)
90mm Unilin Thin-R FR/ALU Flat Roof PIR Insulation Board (pack of 4)
- Product Code: A1-4954
- Delivery Time: 1-3 working days
- Brand: Unilin (prev. Xtratherm) (Tech. support: 03712221055)
- Model: 2400x1200mm - 11.52m2
- Weight: 33.18kg
Our ratings on 22-05-2026:
4.8 out of 5
90mm Unilin Thin-R FR/ALU Flat Roof PIR Insulation Board (pack of 4)
Length: 2400mm
Width: 1200mm
Thickness: 90mm
Pack Quantity: 4
Board Coverage: 2.88m2
Pack Coverage: 11.52m2
Density: 32kg/m3
Weight/m2: 2.88kg
Weight: 33.18kg
Thermal Conductivity: 0.022W/mK
R-Value: 4.1m2K/W
Compressive Strength: 150kPa
Fire Rating (Reaction to Fire): E
90mm Unilin Thin-R FR/ALU Flat Roof PIR Insulation Board is a flat roof insulation with enhanced vapour resistant performance. Unilin Thin-R FR/ALU board is faced with low emissivity aluminium facings both sides. Rot proof and will remain effective for the life span of the building. Unilin Thin-R FR/ALU high thermal performance boards are compatible with mechanically fixed single ply systems and loose laid ballasted systems. This board i not suitable for applications with built-up bitumen based roofing or mastic asphalt systems.
Note: This board was formerly known as 90mm Xtratherm Thin-R FR/ALU Flat Roof PIR Insulation Board
APPLICATION
- Flat roofs
CHARACTERISTICS
- Superior performance PIR foam core,
- Can be readily cut using a sharp knife or fine toothed saw,
- Vapour-tight aluminium facings on both sides,
- Effective thermal performance,
- Limits the risk of condensation,
- For new build or refurbishment,
- Will have life as long as the roof waterproof covering,
- Rot proof and will remain effective for the life span of the building.
CERTIFICATION

Brand: Unilin (prev. Xtratherm)
Model: Unilin Xtrafall
Delivery Time: 7 - 10 days
Unilin Xtrafall is a tapered roofing insulation system designed to deliver both thermal performance and bespoke drainage on flat roofs. By combining rigid Polyisocyanurate (PIR) insulation boards with precision‑engineered falls, the system eliminates standing water and the consequent damage often as..
Brand: Unilin (prev. Xtratherm)
Model: 2400x1200mm - 11.52m2
Delivery Time: 2 - 3 working days
75mm Unilin Safe-R SR/ST Phenolic foam is a superior performance rigid insulation soffit board with enhanced fire performance, consisting of a C-s1, d0 phenolic foam core with negligible smoke obscuration. Unilin Safe-R SR/ST is faced with low emissivity aluminium facings both sides, and has a therm..
Brand: Unilin (prev. Xtratherm)
Model: 2400mm x 1200mm - 5.76m2
Delivery Time: 7 - 10 days
160mm Unilin Safe-R 019/MA (Floors) is a high‑performance phenolic floor insulation board designed to deliver excellent thermal efficiency with minimal thickness. It is commonly used below screeds, timber floors and concrete slabs where achieving low U‑values is essential without increasing floor bu..
Brand: Unilin (prev. Xtratherm)
Model: 1200mm x 1200mm - 8.64m2
Delivery Time: 3 - 5 days
80mm Unilin FR-BGM is a a BBA certified high performance PIR insulation board that is faced with a fleece finished bitumen/glass facers and is suitable for use below partially bonded bitumen based built up roofing systems. Unilin FR-BGM is suitable to apply torch on felt directly on the insulation. ..
Guide Price: £175.22
£210.26 inc VAT
Brand: Unilin (prev. Xtratherm)
Model: 2400x1200mm - 34.56m2
Delivery Time: 2 - 3 working days
25mm Unilin Safe-R SR/UF Phenolic foam is a superior performance rigid underfloor insulation with enhanced fire performance, consisting of an Euroclass D s1 d0 phenolic foam core with negligible smoke obscuration. Unilin Safe-R SR/UF is faced with low emissivity aluminium facings both sides, and has..
Brand: Unilin (prev. Xtratherm)
Model: 2400x1200 - 11.52m2
Delivery Time: 2 - 3 working days
87.5mm Unilin Safe-R SR/TB-MF is a composite insulated panel of 75mm Phenolic core with a composite foil facing bonded to a 12.5mm tapered edge plasterboard for internal applications, mechanically fixed. Unilin Safe-R SR/TB-MF is designed to provide high levels of thermal insulation and dry lining i..
Guide Price: £587.00
£704.40 inc VAT