75mm Unilin Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 4)
75mm Unilin Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 4)
- Product Code: A1-4974
- Delivery Time: 2 - 3 working days
- Brand: Unilin (prev. Xtratherm) (Tech. support: 03712221055)
- Model: 1200x450mm - 2.16m2
Our ratings on 12-06-2026:
4.8 out of 5
75mm Unilin Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 4)
Length: 1200mm
Width: 450mm
Thickness: 75mm
Pack Quantity: 4
Board Coverage: 0.54m2
Pack Coverage: 2.16m2
Thermal Conductivity: 0.021W/mK
R-Value: 3.55m2K/W
Compressive Strength: 100kPa
Fire Rating (Reaction to Fire): B(Class 0)
75mm 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 75mm 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: 2400mm x 1200mm - 11.52m2
Delivery Time: 7 - 10 days
100mm Unilin Safe-R 019/MA (Floors) is a high‑performance phenolic floor insulation board designed to deliver excellent thermal efficiency with minimal thickness. It is commonly used below screeds, timber floors and concrete slabs where achieving low U‑values is essential without increasing floor bu..
Brand: Unilin (prev. Xtratherm)
Model: 1200x450mm - 2.16m2
Delivery Time: 1-3 working days
125mm Unilin ECO360/CT CavityTherm Full Fill Cavity Wall board has a core of modified polyisocyanurate (PIR) bonded to low emissivity textured aluminium foil facings offering excellent insulation performance with thermal conductivity. Unilin ECO360 CT board reduces the junctions prone to ..
Brand: Unilin (prev. Xtratherm)
Model: 2400x1200mm - 8.64m2
Delivery Time: 1-3 working days
110mm 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: 1200mm x 370mm - 0.44m2
Delivery Time: 7 - 10 days
150mm Unilin Rafterlock Thin-R XT/RLOC is a high‑performance pitched roof insulation board comprising a rigid Polyisocyanurate (PIR) core between low emissivity foil facings. Its unique variable‑width design ensures a snug fit between rafters, delivering excellent thermal efficiency with reduced ins..
Brand: Unilin (prev. Xtratherm)
Model: 1200mm x 2400mm - 2.88m2
Delivery Time: 1-3 working days
57.5mm Unilin Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 45mm 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: £55.97
£67.16 inc VAT
Brand: Unilin (prev. Xtratherm)
Model: 2400x1200 - 11.52m2
Delivery Time: 2 - 3 working days
92.5mm Unilin Safe-R SR/TB is a composite insulated panel of of 80mm 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: £461.66
£553.99 inc VAT