Menu
Menu
Your Cart

50mm Unilin Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 9)

50mm Unilin Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 9)
50mm Unilin Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 9)
50mm Unilin Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 9)
50mm Unilin Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 9)
50mm Unilin Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 9)
Our ratings on 21-11-2025:
Google My Business Reviews
4.8 out of 5
Show other thicknesses

50mm Unilin Safe-R SR/CW Phenolic Partial Fill Cavity Insulation Board (pack of 9)

Length: 1200mm
Width: 450mm
Thickness: 50mm
Pack Quantity: 9
Board Coverage: 0.54m2
Pack Coverage: 4.86m2
Thermal Conductivity: 0.021W/mK
R-Value: 2.35m2K/W
Compressive Strength: 100kPa
Fire Rating (Reaction to Fire): B(Class 0)

50mm 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 50mm 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

    44.5mm Unilin Thin-R Thermal Liner XT/TL-MF - Mech Fix (35mm PIR Insulation bonded to 9.5mm Plasterboard) 44.5mm Unilin Thin-R Thermal Liner XT/TL-MF - Mech Fix (35mm PIR Insulation bonded to 9.5mm Plasterboard)
    Guide Price
    Brand: Unilin (prev. Xtratherm) Model and Size: 1200mm x 2400mm - 2.88m2
    Delivery Time: 1-3 working days
    44.5mm Unilin Thin-R Thermal Liner XT/TL-MF is a composite insulated panel of 35mm 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: £43.25
    £51.90 inc VAT
    Get Best Price
    Brand: Unilin (prev. Xtratherm) Model and Size: 1200x2400mm - 8.64m2
    Delivery Time: 1-3 working days
    100mm 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..
    Get Best Price
    50mm Unilin FR-BGM Flat Roof Insulation Board (pack of 10)
    Guide Price
    Brand: Unilin (prev. Xtratherm) Model and Size: 1200mm x 1200mm - 14.40m2
    Delivery Time: 3 - 5 days
    50mm Unilin FR-BGM is a a BBA certified high performance PIR insulation board that is faced with a fleece finished bitumen/glass facers and is suitable for use below partially bonded bitumen based built up roofing systems. Unilin FR-BGM is suitable to apply torch on felt directly on the insulation. ..
    Guide Price: £212.98
    £255.58 inc VAT
    Get Best Price
    Brand: Unilin (prev. Xtratherm) Model and Size: 2400x1200mm - 11.52m2
    Delivery Time: 1-3 working days
    100mm 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..
    Get Best Price
    Brand: Unilin (prev. Xtratherm) Model and Size: 1200x2400mm - 5.76m2
    Delivery Time: 1-3 working days
    150mm Unilin ECO360 MA Sarking PIR Insulation board has a bio-enhanced, halogen free core of modified polyisocyanurate (PIR) pitched roof insulation bonded to textured low emissivity foil facings. Unilin ECO360 MA Sarking board offers excellent insulation performance with excellent th..
    Get Best Price
    59.5mm Unilin XT/TL Thermal Liner Dot and Dab (50mm PIR Insulation bonded to 9.5mm Plasterboard)
    Guide Price
    Brand: Unilin (prev. Xtratherm) Model and Size: 1200mm x 2400mm - 2.88m2
    Delivery Time: 1-3 working days
    59.5mm Unilin XT/TL Thermal Liner Dot and Dab Insulated Plasterboard is a high performance rigid insulation board made from 50mm Unilin PIR core faced with composite kraft paper bonded to 9.5mm plasterboard, specially designed for internal walls dry lining and insulation, due to its closed cell comp..
    Guide Price: £49.36
    £59.23 inc VAT
    Get Best Price
    This product is listed in the following categories and systems (click to show).