72.5mm Eco-Liner Insulated Plasterboard combines insulation and wall finish in a single product, engineered for both mechanically fixed and adhesively bonded drylining applications. The rigid polyisocyanurate core delivers exceptional thermal performance with a conductivity rating of 0.022 W/mK, making it an efficient choice for insulating and finishing internal walls and pitched roofs in new and existing buildings.
Model: 72.5mm EcoTherm Eco-Liner
Thickness: 72.5mm
Pack Quantity: 1 sheet
Dimensions: 2,400mm x 1,200mm x 72.5mm ( 60mm 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: 2.79 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: 72.5mm 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 72.5mm 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.
This product delivers a comprehensive 2-in-1 solution, combining insulation and drylining in a single installation step. The 60mm high-performance rigid polyisocyanurate PIR insulation board core is bonded to a 12.5mm tapered edge gypsum plasterboard layer. Suitable for room-in-the-roof installations, wall applications, and cold flat roofs, the product achieves excellent thermal performance with a low conductivity value of 0.022 W/mK.
Eco-Liner 72.5mm achieves a European Classification (Euroclass) rating of B-s1,d0 when tested in accordance with EN 13501-1:2018, the standard governing fire classification of construction products and building elements based on reaction to fire performance.
The 72.5mm insulation core component exhibits a thermal conductivity (lambda/λ) of 0.022 W/mK, whilst the 12.5 mm gypsum plasterboard layer achieves 0.19 W/mK. This combination delivers superior thermal resistance across the composite assembly.
When properly installed, 72.5mm Ecotherm Eco-Liner is engineered to provide an indefinite service life. Product longevity depends on correct installation methodology, structural support quality, and environmental conditions. The 72.5mm insulated plasterboard is unsuitable for use as a moisture barrier or in persistently damp or humid environments. Careful attention to installation procedures and usage conditions is critical for maximising product performance and durability.
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 by telephone on +4402038839057 , email sales@insulationbee or Live Chat - Lowest UK Insulation Prices.














