25mm Recticel Insulation Eurothane® GP delivers high-performance PIR insulation in a lightweight, easy-to-work-with board format. Engineered for straightforward cutting, handling, and fitting, this product suits pitched roofs, cavity walls, and floor applications with outstanding thermal properties. The low thermal conductivity of λ = 0.022 W/mK ensures excellent energy efficiency, whilst the lightweight construction speeds up installation on site.
Brand: Recticel®
Model: 25mm Eurothane GP
Thickness: 25mm
Dimensions: 2,400mm x 1,200mm x 25mm
Length: 2400mm
Width: 1200mm
Density: 30kg/m3
Weight: 2.16kg
R-Value: 1.1 m2K/W
Thermal Conductivity: 0.022 W/mk
Material: Polyisocyanurate | PIR Insulation
Compressive Strength: 25-49mm: 120 kPa | 50-160mm: 140 kPa
Vapour Resistivity: 100 MNs/gm
Finish: Gas diffusion tight multilayer foil on both sides and grid on both sides.
Edge finishing: Square edges
Fire performance: Euroclass F
Applications: Thermal insulation of Pitched roofs, Cavity walls, Floors (compatible with underfloor heating systems).
Features: Reduce the heating and cooling costs
Model: 25mm Eurothane GP
Installation specialists prefer Eurothane® GP 25mm boards for their light weight, straightforward fitting, and on-site cuttability. Position boards with long edges running parallel to the rafters, pressing them firmly together in a brick-bond arrangement. Where board joints run from eaves to ridge, ensure rafter support is in place. Temporary nailing can secure boards before counter battening is applied.
The 25mm PIR boards fit snugly between wall frame members in a tightly butted brick-bond pattern for consistent thermal coverage.
Lay boards in a tightly butted brick-bond pattern across the floor structure. Where two layers are needed to achieve target thickness, stagger the board joints and position the thicker layer on the outer face.
Our 25mm Insulation meets rigorous manufacturing standards, streamlining the installation process. Precision-cut straight edges, uniform board dimensions, robust compressive strength, and a level surface finish combine to deliver faster, simpler, and more economical installation. Choose Recticel PIR for reliable, high-quality thermal performance.
Selecting ground Floor Insulation demands attention to both thermal and structural properties. Recticel 25mm PIR excels in domestic and commercial settings, delivering the low thermal conductivity and high compressive strength needed for diverse floor constructions. Since underfloor heating is increasingly common in modern homes, Recticel PIR's excellent pipe clip retention makes it an ideal match.
Recticel's PIR insulation extends beyond ground-level use. Eurothane FP provides an excellent solution for lining the soffit of intermediate floors above basements or car parks, combining outstanding thermal performance with a Class 0 spread of flame rating.
Browse our full Recticel range and refine by thickness or coverage using the left-hand filters. For project-specific advice or bulk quotations, contact us by phone on +4402038839057, email sales@insulationbee, or use Live Chat - Lowest UK Insulation Prices.








