100mm Unilin Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 4)
100mm Unilin Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 4)
- Product Code: A1-4976
- Delivery Time: 2 - 3 working days
- Brand: Unilin (prev. Xtratherm)
- Model and Size: 1200x450mm - 2.16m2
Our ratings on 04-11-2025:
4.8 out of 5
100mm Unilin Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 4)
Length: 1200mm
Width: 450mm
Thickness: 100mm
Pack Quantity: 4
Board Coverage: 0.54m2
Pack Coverage: 2.16m2
Thermal Conductivity: 0.021W/mK
R-Value: 5m2K/W
Compressive Strength: 100kPa
Fire Rating (Reaction to Fire): B(Class 0)
100mm Unilin Safe-R SR/CW Phenolic Foam Insulation Board is a superior performance rigid partial fill cavity insulation board with enhanced fire performance, consisting of an Euroclass D-s1, d0 phenolic foam core with negligible smoke obscuration. Unilin Safe-R SR/CW is faced with low emissivity aluminium facings both sides, and has a thermal conductivity as low as 0.020W/mK.
Note: This product was formerly known as 100mm Xtratherm Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board
APPLICATION
- For partial fill cavity insulation
CHARACTERISTICS
- Superior performance phenolic foam,
- Provides the most efficient U-values with minimal thickness,
- Effective thermal and fire performance,
- Low smoke obscuration,
- Low risk fire rating - Euroclass D-s1, d0,
- For new build or refurbishment,
- Rot proof and will remain effective for the life span of the building,
- Can be readily cut using a sharp knife or fine toothed saw.
CERTIFICATION

Brand: Unilin (prev. Xtratherm)
Model and Size: 2400x1200mm - 11.52m2
Delivery Time: 2 - 3 working days
100mm 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 ha..
Brand: Unilin (prev. Xtratherm)
Model and Size: 1200mm x 2400mm - 2.88m2
Delivery Time: 1-3 working days
92.5mm Unilin Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 25mm Unilin PIR core with foil faces bonded to 12.5mm 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 oper..
Guide Price: £57.62
£69.14 inc VAT
Brand: Unilin (prev. Xtratherm)
Model and Size: 1200x600mm - 2.88m2
Delivery Time: 1-3 working days
75mm 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 buil..
Brand: Unilin (prev. Xtratherm)
Model and Size: 1200x2400mm - 8.64m2
Delivery Time: 1-3 working days
120mm Unilin XtroLiner XO/UF board has a core of modified polyisocyanurate (PIR) bonded to low emissivity textured aluminium foil facings and prevents downward heat loss through floors. Unilin XtroLiner XO/UF board offers excellent insulation performance with excellent thermal conductivity. Uni..
Brand: Unilin (prev. Xtratherm)
Model and Size: 1200mm x 2400mm - 2.88m2
Delivery Time: 1-3 working days
52.5mm Unilin Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 40mm Unilin PIR core with foil faces bonded to 12.5mm 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 oper..
Guide Price: £42.49
£50.99 inc VAT
Brand: Unilin (prev. Xtratherm)
Model and Size: 1250x600mm - 2.25m2
Delivery Time: 2 - 3 working days
120mm Unilin XPS 500 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.CHARACTERISTICSExtremely strong,Compressive..