IKO Enertherm ALU PIR Board 25mm

The 25mm IKO Enertherm ALU PIR Insulation Board delivers reliable thermal performance with a rigid polyisocyanurate foam core that contains no CFCs, HCFCs, or HFCs. Both surfaces feature a gas-tight aluminium facing comprising seven layers of reflective ALU cladding, engineered as a unified system. This 25mm Insulation Board has undergone rigorous testing to confirm its performance against water ingress, structural loads, corrosion, and thermal emissivity under demanding conditions.

Properties

Brand: IKO Enertherm®

Thickness: 25mm

Length: 2400mm

Width: 1200mm

Dimensions: 2,400mm x 1,200mm x 25mm

MPN: 30 IKO ALU

Density: 32 kg/m3

Compressive strength at: 10% deformation: 175kPa (17.5ton/m²)

R-Value: 1.35m2K/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

Range Of Applications

1. Rooftop: Flat Roof Insulation for timber, concrete and steel deck.
2. Sarking: pitched roof insulation (type nF with neutral felt).
3. Floor: floor insulation (underfloor heating and concrete floors).
4. Wall: cavity wall insulation.
5. Wrap: outside wall insulation (closed joints).
6. Comfort: loft insulation.
7. Comfort Easy: Loft floor insulation.

This 25mm PIR board suits numerous applications including external walls, pitched roofs, floors, internal walls, inverted roofs, metal roofs, and flat roofs, delivering excellent thermal performance across all uses. The insulation properties significantly improve energy efficiency and thermal resistance throughout your building, whatever the application. Better energy efficiency means reduced heating and cooling bills—an important consideration given current energy costs. The boards are also environmentally responsible, containing no CFCs, HCFCs, or HFCs, so they pose no environmental risk.

About

Pairing the 25mm PIR insulation board with Roof Membranes is straightforward, and the boards maintain their insulating effectiveness and build quality over extended periods thanks to dimensional stability. The material resists rot and mould growth, guaranteeing extended service life. The high thermal values and slim profile of 25mm Enertherm boards reduce overall build thickness, maximising usable space in roofs, floors, or cavities.

Micro Cell Technology

IKO Enertherm incorporates distinctive Micro Cell Technology (MCT), developed through careful selection of raw materials and manufacturing processes. This creates an exceptionally fine cell structure within the insulation.

Shape retention: IKO Enertherm boards preserve their shape and dimensional stability better than PIR Boards with larger foam cells and non-stabilised alternatives. This prevents thermal bridging and extends service life without compromising insulation performance.

Moisture resistance: MCT technology in 25mm IKO insulation boards delivers very low long-term water absorption (< 0.6%) compared to competing materials. The PIR boards remain rot and mould-free, with insulation values preserved since weight gain from moisture is avoided.

Pressure insulation: 25mm IKO PIR boards offer outstanding pressure resistance due to high elasticity levels. MCT technology provides flexible cells that prevent rupture and resist permanent indentation even under foot traffic.

Info

Browse our Iko Enertherm range and use the left-hand filters to select by thickness or coverage. For advice on product suitability for your project or to request a quantity discount quotation, contact us by phone on +4402038839057, email sales@insulationbee or Live Chat - Lowest UK Insulation Prices.