52.5mm Eco-Liner Insulated Plasterboard combines insulation and wall finish in a single product, engineered for both mechanically fixed and adhesively bonded drylining applications. This advanced composite delivers exceptional thermal performance with a 0.022 W/mK insulation rating, making it an effective choice for upgrading internal walls and pitched roofs in one installation step.
Model: 52.5mm EcoTherm Eco-Liner
Thickness: 52.5mm
Pack Quantity: 1 sheet
Dimensions: 2,400mm x 1,200mm x 52.5mm ( 40mm PIR bonded to 12.5mm Plasterboard)
Length: 2400mm
Width: 1200mm
Weight : Eco-Liner has an approximate weight of 10.76 kg/m2 at a thickness of 82.5 mm (insulation thickness 70 mm plus 12.5 mm plasterboard)
Compressive Strength: >>140kPa
Material: Eco-Liner is a high performance rigid thermoset polyisocyanurate PIR insulation.
Thermal Conductivity: Insulation: 0.022 W/mK & Plasterboard: 0.19 W/mK
Thermal Resistance: 1.88 m2K/W
Core Density: 28kg/m3
Fire Classification: European Classification (Euroclass) B-s1,d0 when classified to EN 13501-1: 2018.
Coverage: 2.88m2
Surface: Composite kraft paper facing adhered to 12.5mm or 9.5mm*plasterboard
Facing: 52.5mm Ecotherm has a bilaminate foil/kraft paper facing on the outer, bonded to a 12.5 mm tapered edge gypsum plasterboard on the inner facing.
Finish: Kraft facing ǀ Composite foil
Core water vapour resistivity: 2743 x 1200
Edge: Butt
Fire Performance: BS 476-7 / Class 1
Application: Eco-Liner 52.5mm insulated plasterboard is internal wall insulation for solid, cavity or timber frame walls within new and existing properties. Eco-Liner is also an ideal insulation product for pitched roofs.
Key features of Eco-Liner include its integrated 2-in-1 insulation and drylining capability, delivering both thermal performance and finished wall surface simultaneously. The product comprises a high-performance 40mm rigid polyisocyanurate PIR insulation Board core fused to a tapered edge 12.5mm gypsum plasterboard layer. Suitable for room-in-the-roof installations, wall applications, and cold flat roofs, it delivers outstanding thermal efficiency with a low insulation conductivity of 0.022 W/mK.
52.5mm Ecotherm achieves a European Classification (Euroclass) rating of B-s1,d0 when assessed according to EN 13501-1:2018, the standard specification for fire classification of construction products and building elements based on reaction to fire performance.
The insulation core achieves a thermal conductivity (lambda/λ) value of 0.022 W/mK, whilst the 12.5 mm gypsum plasterboard layer provides a thermal conductivity of 0.19 W/mK. This combination delivers superior thermal resistance across the composite assembly.
When properly installed, 52.5mm Ecotherm Eco-Liner is engineered for long-term performance with an indefinite design lifespan. Product durability depends on correct installation methodology, structural support quality, and environmental conditions during use. Note that the 52.5mm insulated plasterboard is unsuitable as a moisture barrier or in persistently wet or humid environments. Careful attention to installation procedures and usage parameters is critical for maximising product performance and service life.
Explore our full Ecotherm range and refine by thickness or coverage using the filters on the left. For technical advice on product suitability or bulk pricing enquiries, contact us on +4402038839057 , email sales@insulationbee or use Live Chat - Lowest UK Insulation Prices.














