The IKO Enertherm ALU PIR Insulation Board at 50mm thickness delivers high-performance thermal insulation with a rigid polyisocyanurate foam core that contains no CFCs, HCFCs, or HFCs. Both surfaces feature a gas-tight aluminium composite facing with seven layers of reflective ALU cladding, providing exceptional durability. This 50mm Insulation Board has undergone rigorous testing to confirm its performance against water ingress, structural loads, corrosion, and thermal emissivity across demanding conditions.
Brand: IKO Enertherm®
Thickness: 50mm
Length: 2400mm
Width: 1200mm
Dimensions: 2,400mm x 1,200mm x 50mm
MPN: 30 IKO ALU
Density: 32 kg/m3
Compressive strength at: 10% deformation: 175kPa (17.5ton/m²)
R-Value: 2.25m2K/W
Thermal Conductivity: 0.022 W/mk
Water vapour diffusion:: PIR foam: μ = 60 – ALU facing μ > 100,000
Applications: Roofs, Walls, Floors, Timber & Steel Frame
BBA Certified: Yes, No.15/5283
Features: Multi-functional ALU PIR Insulation
By Project Type: DIY, New Build, Refurbishment
Installation Method: Loose Laid, Mechanically Fixed, Partially Bonded
Material: PIR
Facing: Aluminium composite facing on both sides
Product Colour: Silver
Product Finish: Aluminium Multi Layer Lamination
Sector: Community & Amenity, Domestic, Education, Health, Hotel & Leisure, Industrial, Mixed Use, Offices, Private Housing, Retail, Social Housing, Utilities
Substrate: Concrete, Masonry Structure, Metal, Timber (Plywood-OSB)
Fire Performance: EN 13501-1: Class E | BS 476 – p7 : Class 1
This 50mm PIR board suits numerous applications including external walls, pitched roofs, floors, internal walls, inverted roofs, metal roofs, and flat roofs, delivering outstanding thermal performance. The insulation properties significantly boost energy efficiency and thermal resistance throughout your building, regardless of application type. Improved energy efficiency reduces heating and cooling costs—a practical benefit given today's energy pricing. These boards are also environmentally responsible, containing no CFCs, HCFCs, or HFCs, so they pose no environmental risk.
Pairing the 50mm PIR insulation board with Roof Membranes is straightforward, and the product maintains its insulating performance and build quality over extended periods thanks to excellent dimensional stability. The boards resist rot and mould growth, guaranteeing extended service life. With high thermal values and minimal thickness, these boards reduce overall build depth, maximising usable space in roofs, floors, or cavities.
IKO Enertherm features distinctive properties from its Micro Cell Technology (MCT), achieved through optimised raw material selection and production processes. This creates a highly refined cell structure within the insulation.
Shape retention: IKO Enertherm boards maintain dimensional stability superior to PIR Boards with standard foam structures and non-shrinking alternatives. This prevents thermal bridging and extends service life without compromising insulation effectiveness.
Moisture resistance: MCT technology in 50mm IKO insulation boards delivers very low long-term water absorption (< 0.6%) compared to alternative insulation products. The PIR boards remain rot and mould-resistant, preserving insulation value by eliminating weight gain from moisture uptake.
Pressure insulation: 50mm IKO PIR boards offer outstanding pressure resistance through high elasticity. MCT-engineered flexible cells prevent rupture and permanent indentation, even under foot traffic.
Browse our Iko Enertherm range and refine by thickness or coverage using the left-hand filters. For project-specific advice or bulk pricing enquiries, contact us on +4402038839057, email sales@insulationbee, or use Live Chat for competitive Insulation pricing.













