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 27-01-2026:
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: 1200x600mm - 1.44m2
Delivery Time: 1-3 working days
125mm Unilin Stonewool SW/RS Insulation Slab is a non-combustible Euroclass A1 stone wool insulation used as ventilated rainscreen façade and framing applications and curtain walling. Unilin Stonewool SW/RS insulation provides a uniform, high density solution providing resilience during the bui..
Brand: Unilin (prev. Xtratherm)
Model: 1200mm x 450mm - 2.16m2
Delivery Time: 7 - 10 days
75mm Unilin Safe-R 019/CW Phenolic Partial Fill Cavity Insulation Board - 1200mm x 450mm (pack of 4)
75mm Unilin Safe-R 019/CW Phenolic Partial Fill Cavity Insulation Board is a high‑performance phenolic insulation panel designed for traditional masonry cavity walls. It delivers excellent thermal efficiency while preserving a clear residual cavity, helping protect buildings from wind‑driven rain. T..
Brand: Unilin (prev. Xtratherm)
Model: 2400mm x 1200mm - 2.88m2
Delivery Time: 1-3 working days
75mm Unilin Thin-r XT/TF has a core of polyisocyanurate (PIR) bonded to low emissivity textured aluminium foil facings for use in timber framed walls. Unilin XT/TF board offers excellent insulation performance with excellent thermal conductivity. Unilin XT/TF is CFC & HCFC free and is manuf..
Guide Price: £31.24
£37.49 inc VAT
Brand: Unilin (prev. Xtratherm)
Model: 2400x1200 - 17.28m2
Delivery Time: 2 - 3 working days
62.5mm Unilin Safe-R SR/TB is a composite insulated panel of of 50mm Unilin Phenolic core with a glass tissue facing, bonded to a 12.5mm tapered edge plasterboard for internal applications. Unilin Safe-R SR/TB composite insulation board is fixed with dot & dab adhesive bonding. It is designed to..
Guide Price: £484.14
£580.97 inc VAT
Brand: Unilin (prev. Xtratherm)
Model: 2400mm x 1200mm - 11.52m2
Delivery Time: 7 - 10 days
80mm Unilin Safe-R 019/MA (Roofs) is a high‑performance phenolic insulation board designed specifically for warm roof applications where exceptional thermal efficiency is required with minimal added build‑up. Its advanced phenolic core delivers one of the lowest thermal conductivities available in r..
Brand: Unilin (prev. Xtratherm)
Model: 2400mm x 1200mm - 11.52m2
Delivery Time: 7 - 10 days
75mm Unilin Safe-R 019/MA (Roofs) is a high‑performance phenolic insulation board designed specifically for warm roof applications where exceptional thermal efficiency is required with minimal added build‑up. Its advanced phenolic core delivers one of the lowest thermal conductivities available in r..