50mm Unilin XtroLiner XO/CW (TG) Partial Fill Cavity Wall PIR Insulation Board - 1200mm x 450mm - Pack of 9
50mm Unilin XtroLiner XO/CW (TG) Partial Fill Cavity Wall PIR Insulation Board - 1200mm x 450mm - Pack of 9
- Product Code: A1-5039
- Delivery Time: 1-3 working days
- Brand: Unilin (prev. Xtratherm) (Tech. support: 03712221055)
- Model and Size: 1200x450mm - 4.86m2
Our ratings on 25-11-2025:
4.8 out of 5
50mm Unilin XtroLiner XO/CW (T&G) Partial Fill Cavity Wall PIR Insulation Board - 1200mm x 450mm - 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: 120kPa
50mm Unilin XtroLiner XO/CW board has a tongue and groove core of modified polyisocyanurate (PIR) bonded to low emissivity aluminium foil facings offering excellent insulation performance with thermal conductivity. Unilin XtroLiner XO/CW board reduces the junctions prone to thermal bridging improving the thermal performance of the cavity wall. Unilin XtroLiner XO/CW is CFC & HCFC free and is manufactured under the highest standards of ISO 9001 and 14001 Quality and Environmental Management Systems.
CHARACTERISTICS
- High thermal performance rigid insulation,
- Robust tongue & groove Jointing,
- Easy to Install,
- Non-deleterious material,
- Suitable for new build and refurbishment,
- Manufactured with zero ODP blowing agent,
- Reduces Thermal Bridging,
- Reduced Risk of Condensation,
- Reaction to fire: Euroclass C s2 d0,
- Closed cell structure – moisture resistant.
APPLICATION
- Partial fill cavity walls
CERTIFICATION

Brand: Unilin (prev. Xtratherm)
Model and Size: 2400mm x 1200mm - 2.88m2
Delivery Time: 1-3 working days
25mm Unilin Thin-r XT/PR-UF has a core of polyisocyanurate (PIR) bonded to low emissivity textured aluminium foil facings. Unilin XT/PR-UF board offers excellent insulation performance with excellent thermal conductivity. Unilin XT/PR-UF is CFC & HCFC free and is manufactured under the highest stand..
Guide Price: £14.34
£17.21 inc VAT
Brand: Unilin (prev. Xtratherm)
Model and Size: 2400x1200 - 11.52m2
Delivery Time: 2 - 3 working days
112.5mm Unilin Safe-R SR/TB-MF is a composite insulated panel of 100mm Phenolic core with a composite foil facing bonded to a 12.5mm tapered edge plasterboard for internal applications, mechanically fixed. Unilin Safe-R SR/TB-MF is designed to provide high levels of thermal insulation and dry lining..
Guide Price: £586.11
£703.33 inc VAT
Brand: Unilin (prev. Xtratherm)
Model and Size: 1200x2400mm - 11.52m2
Delivery Time: 1-3 working days
100mm 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..
Brand: Unilin (prev. Xtratherm)
Model and Size: 2400mm x 1200mm - 2.88m2
Delivery Time: 1-3 working days
20mm Unilin Thin-r XT/TF has a core of polyisocyanurate (PIR) bonded to low emissivity textured aluminium foil facings for use in timber framed walls. Unilin XT/TF board offers excellent insulation performance with excellent thermal conductivity. Unilin XT/TF is CFC & HCFC free and is manufactured u..
Guide Price: £15.62
£18.74 inc VAT
Brand: Unilin (prev. Xtratherm)
Model and Size: 1250x600mm - 3.75m2
Delivery Time: 2 - 3 working days
80mm 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 ..
Brand: Unilin (prev. Xtratherm)
Model and Size: 2400x1200mm - 14.40m2
Delivery Time: 2 - 3 working days
60mm 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..