40mm Unilin Thin-R FR/ALU Flat Roof PIR Insulation Board (pack of 7)
40mm Unilin Thin-R FR/ALU Flat Roof PIR Insulation Board (pack of 7)
- Product Code: A1-4948
- Delivery Time: 1-3 working days
- Brand: Unilin (prev. Xtratherm) (Tech. support: 03712221055)
- Model: 2400x1200mm - 20.16m2
- Weight: 25.80kg
Our ratings on 22-05-2026:
4.8 out of 5
40mm Unilin Thin-R FR/ALU Flat Roof PIR Insulation Board (pack of 7)
Length: 2400mm
Width: 1200mm
Thickness: 40mm
Pack Quantity: 7
Board Coverage: 2.88m2
Pack Coverage: 20.16m2
Density: 32kg/m3
Weight/m2: 1.28kg
Weight: 25.8kg
Thermal Conductivity: 0.022W/mK
R-Value: 1.8m2K/W
Compressive Strength: 150kPa
Fire Rating (Reaction to Fire): E
40mm 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 40mm 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: 1200x2400mm - 8.64m2
Delivery Time: 1-3 working days
125mm Unilin ECO360 MA Floor PIR Insulation board has a bio-enhanced, halogen free core of modified polyisocyanurate (PIR) floor insulation bonded to textured low emissivity foil facings. Unilin ECO360 MA board offers excellent insulation performance with excellent thermal conductivit..
Brand: Unilin (prev. Xtratherm)
Model: 2400mm x 1200mm - 8.64m2
Delivery Time: 7 - 10 days
120mm 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 ..
Brand: Unilin (prev. Xtratherm)
Model: 2400mm x 1200mm - 2.88m2
Delivery Time: 1-3 working days
40mm 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: £20.83
£25.00 inc VAT
Brand: Unilin (prev. Xtratherm)
Model: 1200mm x 2400mm - 2.88m2
Delivery Time: 1-3 working days
34.5mm Unilin XT/TL Thermal Liner Dot and Dab Insulated Plasterboard is a high performance rigid insulation board made from 25mm Unilin PIR core faced with composite kraft paper bonded to 9.5mm plasterboard, specially designed for internal walls dry lining and insulation, due to its closed cell comp..
Guide Price: £44.28
£53.14 inc VAT
Brand: Unilin (prev. Xtratherm)
Model: 2400mm x 1200mm - 11.52m2
Delivery Time: 7 - 10 days
100mm Unilin Safe-R 019/MA (Soffit) Phenolic Insulation Board is a high‑performance phenolic insulation board designed for use on the underside of structural ceilings in both commercial and residential buildings. It delivers strong thermal efficiency and reliable fire performance, making it a robust..
Brand: Unilin (prev. Xtratherm)
Model: 1200mm x 2400mm - 2.88m2
Delivery Time: 1-3 working days
50.5mm Unilin XT/TL Thermal Liner Dot and Dab Insulated Plasterboard is a high performance rigid insulation board made from 38mm Unilin PIR core faced with composite kraft paper bonded to 12.5mm plasterboard, specially designed for internal walls dry lining and insulation, due to its closed cell com..
Guide Price: £54.71
£65.65 inc VAT