Energytherm PIR Insulation Board 2400 x 1200mm – Foil Faced – 25mm to 150mm

Upgrade the thermal performance of your building project with the 140mm WEL Enerytherm PIR Insulation Board, supplied in a full-size 2400 x 1200mm, approximately 8 x 4ft, rigid insulation sheet.

Designed for modern energy-efficient construction, the board features a rigid polyisocyanurate, or PIR, insulation core with reflective aluminium foil facings on both sides. Its substantial 140mm thickness provides high thermal resistance while remaining relatively lightweight, rigid and easy to cut during installation.

The multi-layer aluminium facings help protect the PIR core and can contribute to a continuous, wind-resistant and low-permeability insulation layer when the boards, joints and penetrations are correctly installed, taped and sealed. The reflective surfaces can also provide additional thermal benefits when positioned next to a correctly formed unventilated air cavity.

Based on the equivalent IKO enertherm ALU technical specification, the board offers a declared thermal conductivity of 0.022 W/mK in accordance with EN 13165. At 140mm thick, the manufacturer’s published declared thermal resistance is 6.35m²K/W. The official IKO product also has a rigid, closed-cell PIR core, a nominal density of approximately 32kg/m³ and compressive strength of 155kPa at 10% deformation. These technical figures should only be used for the WEL product when confirmed by its packaging or Declaration of Performance.

Suitable applications

The 140mm PIR insulation board may be suitable for:

Pitched-roof insulation
Flat-roof insulation systems
Timber, concrete and steel roof decks
Cavity-wall insulation
Timber-frame and steel-frame walls
Solid-wall insulation systems
Ground-floor and concrete-floor insulation
Underfloor-heating applications
Loft and loft-floor insulation
Cladding and ventilated façade systems
Basement insulation
New-build and refurbishment projects

The corresponding IKO enertherm ALU board is officially listed for flat and pitched roofs, floors, cavity walls, timber and steel-frame walls, façades and loft-floor applications. Final suitability depends on the complete building system, installation method and project specification.

boardcfrom 25mm to 150mm

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Available in thicknesses from 25mm to 150mm, allowing you to choose the right level of insulation for your project.

For a product range heading:

WEL Enerytherm PIR Insulation Boards – 2400 x 1200mm – Available from 25mm to 150mm

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Product title

WEL Enerytherm PIR Insulation Board 2400 x 1200mm – Foil Faced – 25mm to 150mm

Short description

WEL Enerytherm PIR Insulation Board is a high-performance rigid insulation panel measuring 2400 x 1200mm, approximately 8 x 4ft. Featuring a rigid PIR foam core with reflective aluminium foil facings, it is designed to improve thermal efficiency across a wide range of building applications.

Suitable for walls, pitched roofs, flat roofs, floors, lofts, cladding systems and refurbishment projects.

• Sheet size: 2400 x 1200mm
• Coverage: 2.88m² per board
• Available thicknesses: 25mm to 150mm
• Rigid PIR insulation core
• Reflective foil facings
• Lightweight and easy to cut
• Suitable for new-build and renovation projects

Select the required thickness before ordering.

Long description

Improve the energy efficiency of your building project with WEL Everywhere PIR Insulation Board, a high-performance rigid insulation solution suitable for new-build, refurbishment and renovation work.

Each board measures 2400 x 1200mm, approximately 8 x 4ft, and provides 2.88m² of coverage. The boards are available in a wide selection of thicknesses from 25mm to 150mm, allowing you to choose the appropriate insulation depth for your project.

WEL Enerytherm insulation boards feature a rigid polyisocyanurate, or PIR, foam core with reflective aluminium foil facings. The rigid construction helps the board retain its shape during handling and installation, while the foil surfaces provide a durable finish and can help create a continuous insulation layer when joints and penetrations are correctly taped and sealed.

PIR insulation provides excellent thermal performance in a relatively slim board, making it a popular choice where high levels of insulation are required without taking up excessive space.

Suitable applications include:

• Cavity-wall insulation
• Solid-wall insulation
• Timber-frame and steel-frame walls
• Pitched-roof insulation
• Flat-roof insulation systems
• Loft and loft-floor upgrades
• Ground-floor and concrete-floor insulation
• Underfloor-heating projects
• Cladding and façade systems
• Basement insulation
• Garage, workshop and outbuilding insulation
• New-build and refurbishment projects

Key features and benefits:

• Full-size 2400 x 1200mm insulation board
• Approximately 8 x 4ft sheet size
• Covers 2.88m² per board
• Available from 25mm to 150mm thick
• High-performance rigid PIR insulation core
• Reflective aluminium foil facings
• Helps reduce heat loss through the building fabric
• Supports improved building energy efficiency
• Lightweight compared with many traditional insulation materials
• Easy to measure, cut and install using suitable tools
• Suitable for walls, roofs, floors and lofts
• Useful for both domestic and commercial projects
• Suitable for trade, contractor and DIY applications

Available thicknesses:

• 25mm PIR insulation board
• 30mm PIR insulation board
• 40mm PIR insulation board
• 50mm PIR insulation board
• 60mm PIR insulation board
• 70mm PIR insulation board
• 75mm PIR insulation board
• 80mm PIR insulation board
• 90mm PIR insulation board
• 100mm PIR insulation board
• 110mm PIR insulation board
• 120mm PIR insulation board
• 125mm PIR insulation board
• 130mm PIR insulation board
• 140mm PIR insulation board
• 150mm PIR insulation board

Available thicknesses may vary depending on current stock.

Installation guidance:

Boards should be measured carefully and cut using suitable insulation-board tools. Install boards tightly together to minimise gaps and reduce thermal bridging. Where required by the building design, use compatible foil tape to seal board joints and appropriate expanding insulation foam around small gaps and penetrations.

Boards must be installed in accordance with the relevant building regulations, project specification and manufacturer’s instructions. The correct thickness and installation method will depend on the required thermal performance, application and construction type.

Store boards flat, dry and protected from prolonged sunlight, rain and damage before installation. PIR insulation should not be treated as a finished exposed surface and must be covered with the appropriate building materials and fire-protective layers required for the application.

Choose WEL Enerytherm PIR Insulation Board for a lightweight, rigid and versatile insulation solution available in thicknesses from 25mm to 150mm.