25mm Unilin Thin-R FR/ALU Flat Roof PIR Insulation Board (pack of 12)
25mm Unilin Thin-R FR/ALU Flat Roof PIR Insulation Board (pack of 12)
- Product Code: A1-4947
- Delivery Time: 1-3 working days
- Brand: Unilin (prev. Xtratherm)
- Model and Size: 2400x1200mm - 34.56m2
- Weight: 27.65kg
Our ratings on 18-11-2025:
4.8 out of 5
25mm Unilin Thin-R FR/ALU Flat Roof PIR Insulation Board (pack of 12)
Length: 2400mm
Width: 1200mm
Thickness: 25mm
Pack Quantity: 12
Board Coverage: 2.88m2
Pack Coverage: 34.56m2
Density: 32kg/m3
Weight/m2: 0.8kg
Weight: 27.65kg
Thermal Conductivity: 0.022W/mK
R-Value: 1.14m2K/W
Compressive Strength: 150kPa
Fire Rating (Reaction to Fire): E
25mm 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 25mm Xtratherm Thin-R FR/ALU Flat Roof PIR Insulation Board
APPLICATION- Flat roofs
- 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.

Brand: Unilin (prev. Xtratherm)
Model and Size: 2400mm x 1200mm - 11.52m2
Delivery Time: 2 - 3 working days
75mm Unilin Safe-R SR/PR Phenolic Foam Insulation Board is a superior performance rigid insulation for pitched roofs with enhanced fire performance, consisting of a Class O phenolic foam core with negligible smoke obscuration. Safe-R is faced with low emissivity aluminium facings both sides, and has..
Guide Price: £349.38
£419.26 inc VAT
Brand: Unilin (prev. Xtratherm)
Model and Size: 2400mm x 1200mm - 2.88m2
Delivery Time: 1-3 working days
116mm Unilin FR/TP Thermal Ply Flat Roof Board is a high-performance composite board designed for flat roof applications. It comprises a 110mm rigid polyisocyanurate (PIR) insulation board directly bonded to a 6mm WBP grade plywood. This combination provides both high levels of thermal insulation an..
Brand: Unilin (prev. Xtratherm)
Model and Size: 1200x450mm - 4.86m2
Delivery Time: 2 - 4 days
40mm Unilin ThinR XT/CW Partial Fill Cavity Wall Insulation Board is a PIR insulation board with a high thermal performance whilst maintaining a residual cavity in the external walls. This board achieves high standards of insulation with a certified thermal conductivity of 0.022W/mK with the optiona..
Guide Price: £76.47
£91.76 inc VAT
Brand: Unilin (prev. Xtratherm)
Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 2 - 3 working days
66mm Unilin Safe-R SR/STP Phenolic Soffit Plus Board (60mm 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: 1250x600mm - 2.25m2
Delivery Time: 2 - 3 working days
140mm Unilin XPS 300 is an extremely durable heavy duty thermal insulation board made of extruded polystyrene offering exceptional thermal performance and versatility. It is a lightweight board that is able to withstand extreme loads. It has a rebated edge.Note: Availability subject to quantity and ..
Brand: Unilin (prev. Xtratherm)
Model and Size: 2400x1200mm - 11.52m2
Delivery Time: 2 - 3 working days
75mm Unilin Safe-R SR/FB Phenolic foam is a superior performance rigid insulation framing board with enhanced fire performance, consisting of an Euroclass B-s1, d0 phenolic foam core with negligible smoke obscuration. Unilin Safe-R SR is faced with low emissivity aluminium facings both sides, and ha..