100mm Xtratherm Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 4)
100mm Xtratherm Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 4)
- Product Code: A1-4585
- Delivery Time: 2 - 3 working days
- Brand: Xtratherm (Tech. support: 03712221055)
- Model and Size: 1200x450mm - 2.16m2
- Weight: 9.72kg
Our ratings on 24-10-2025:
4.8 out of 5
100mm Xtratherm Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 4)
Width: 450mm
Length: 1200mm
Pack Coverage: 2.16m2
Pack Quantity: 4
Density: 45kg/m3
Weight/m2: 4.5kg
Weight: 9.72kg
Thermal Conductivity: 0.020W/mK
R-Value: 5m2K/W
Compressive Strength: 125kPa
Fire Rating (Reaction to Fire): D(Class 3)
100mm Xtratherm Safe-R SR/CW Phenolic foam board is a superior performance rigid partial fill cavity insulation board with enhanced fire performance, consisting of a Class O phenolic foam core with negligible smoke obscuration. Safe-R SR/CW is faced with low emissivity aluminium facings both sides, and has a thermal conductivity as low as 0.02W/mK.
APPLICATION
- Designed for use 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 - Class 0,
- 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
- Manufactured under a quality system approved to EN ISO 9001:2000 (Quality Management Systems)
- Manufactured under an environmental system approved to EN ISO 14001:2004 (Environmental Management Systems)
- Is manufactured without the use of CFC's or HCFC's and has Zero Ozone Depletion Potential
- BBA approved
Brand: Xtratherm
Model and Size: 1200x2400mm - 8.64m2
Delivery Time: 1-3 working days
120mm XtroLiner XO/PR board has a core of modified polyisocyanurate (PIR) bonded to low emissivity textured aluminium foil facings. It offers excellent insulation performance with thermal conductivity of 0.021 W/mK and a Class ‘O’ fire rating. XtroLiner XO/PR is CFC & HCFC free and is manufactur..
Guide Price: £416.12
£499.34 inc VAT
Brand: Xtratherm
Model and Size: 1200mm x 1200mm - 4.32m2
Delivery Time: 3 - 5 days
Xtratherm FR-MG 120mm is a mineral coated glass faced board. Xtratherm XT/FR MG boards should be laid over the vapour control layer in a break bonded pattern. The long edges of the boards should be laid at right angles to the direction of the substrate and all edges must be fully supported by the de..
Guide Price: £108.78
£130.54 inc VAT
Brand: Xtratherm
Model and Size: 1200x2400mm - 2.88m2
Delivery Time: 1-3 working days
92.5mm Xtratherm XT/TL Thermal Liner Dot and Dab (80mm PIR Insulation bonded to 12.5mm Plasterboard)
92.5mm Xtratherm XT/TL Thermal Liner Dot and Dab Insulated Plasterboard is a high performance rigid insulation board made from 15mm Xtratherm 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 ce..
Guide Price: £62.39
£74.87 inc VAT
Brand: Xtratherm
Model and Size: 1200x450mm - 2.16m2
Delivery Time: 2 - 3 working days
100mm Xtratherm Safe-R SR/CW Phenolic foam board is a superior performance rigid partial fill cavity insulation board with enhanced fire performance, consisting of a Class O phenolic foam core with negligible smoke obscuration. Safe-R SR/CW is faced with low emissivity aluminium facings both sides, ..
Brand: Xtratherm
Model and Size: 2400mm x 1200mm - 2.88m2
Delivery Time: 1-3 working days
15mm Xtratherm Thin-r is a foil faced Polyisocyanurate (PIR) insulation board formed by a blowing process which generates rigid foam composed of fine cells filled with Pentane blowing agent trapped within the foam. Pentane has very good insulating properties and gives Thin-r superb insulating capabi..
Guide Price: £22.10
£26.52 inc VAT
Brand: Xtratherm
Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1-3 working days
42.5mm Xtratherm Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 30mm Xtratherm Polyiso (PIR) core with foil faces bonded to 12.5mm tapered edge plasterboard for mechanically fixing to internal walls. XT/TL-MF is designed to provide high levels of thermal insulation and dry lining in..
Guide Price: £39.61
£47.53 inc VAT