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 and Size: 2400x1200mm - 20.16m2
- Weight: 25.80kg
Our ratings on 24-11-2025:
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 and Size: 2400x1200mm - 8.64m2
Delivery Time: 1-3 working days
120mm 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 F..
Brand: Unilin (prev. Xtratherm)
Model and Size: 2400x1200 - 34.56m2
Delivery Time: 2 - 3 working days
37.5mm Unilin Safe-R SR/TB is a composite insulated panel of of 25mm 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: £712.18
£854.62 inc VAT
Brand: Unilin (prev. Xtratherm)
Model and Size: 1200mm x 1200mm - 4.32m2
Delivery Time: 3 - 5 days
140mm Unilin FR/MG is a high performance PIR core with mineral coated glass facers suitable for use below single ply waterproofing systems and partially bonded built-up felt. It is compatible with adhesively bonded single ply roofing membranes laid on mechanically fixed ..
Guide Price: £123.78
£148.54 inc VAT
Brand: Unilin (prev. Xtratherm)
Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 2 - 3 working days
56mm Unilin Safe-R SR/STP Phenolic Soffit Plus Board (50mm Phenolic + 6mm Building Panel) is a superior performance ceiling insulation board with enhanced fire performance, consisting of an Euroclass B s1 d0 phenolic foam core with negligible smoke obscuration. Unilin Safe-R SR/STP phenolic core is ..
Brand: Unilin (prev. Xtratherm)
Model and Size: 1200mm x 2400mm - 2.88m2
Delivery Time: 1-3 working days
34.5mm Unilin Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 25mm Unilin PIR core with foil faces bonded to 9.5mm tapered edge plasterboard for mechanically fixing to internal walls. Unilin XT/TL-MF is designed to provide high levels of thermal insulation and dry lining in one opera..
Guide Price: £35.95
£43.14 inc VAT
Brand: Unilin (prev. Xtratherm)
Model and Size: 2400mm x 1200mm - 2.88m2
Delivery Time: 1-3 working days
99mm Unilin Plydeck Flat Roof Board is a high-performance composite board designed for flat roof applications. It comprises a 90mm rigid polyisocyanurate (PIR) insulation board directly bonded to a 9mm OSB board. This combination provides both high levels of thermal insulation and a robust decking s..