40mm PIR Insulation Board 2400mm x 1200mm ( 8″ x 4″ )

40mm PIR Insulation Board 2400mm x 1200mm (8′ x 4′) – High-Performance Thermal Solution

Optimise your building’s thermal performance with our premium 40mm PIR insulation board, measuring a standard 2400mm x 1200mm (8′ x 4′). This high-specification polyisocyanurate (PIR) rigid foam insulation is engineered to deliver exceptional thermal efficiency, making it an indispensable choice for a wide range of construction projects across the UK. With its superior insulating properties, this board significantly reduces heat loss, helping to achieve stringent Building Regulations compliance and lower energy costs for both new builds and refurbishment schemes.

Each 40mm PIR insulation board features a robust closed-cell foam core, typically bonded between low-emissivity aluminium foil facings. This construction not only provides outstanding thermal resistance but also offers enhanced moisture protection and long-term durability. Lightweight and easy to handle, these boards are designed for quick and efficient installation, ensuring a seamless insulation layer across your building envelope.

Key Features and Specifications

• Material: High-performance Polyisocyanurate (PIR) rigid foam core.
• Dimensions: 2400mm (Length) x 1200mm (Width) x 40mm (Thickness) (8′ x 4′).
• Coverage: 2.88m² per board.
• Thermal Conductivity (Lambda λ): Excellent 0.022 W/mK, ensuring superior thermal performance.
• Facings: Low-emissivity composite aluminium foil facings on both sides for improved thermal performance and moisture resistance.
• Compressive Strength: Typically ≥120kPa or 150kPa, providing structural stability.
• Fire Performance: Achieves Euroclass F or Class 1 surface spread of flame (BS 476-7) depending on specific product.
• Environmental: Manufactured with zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).
• Benefits: Lightweight, easy to cut and install, long-lasting, reduces thermal bridging, and helps meet modern U-value targets.

Applications

This versatile 40mm PIR insulation board is suitable for a multitude of applications across residential, commercial, and industrial construction, providing effective thermal insulation wherever it’s needed.

• Roofs: Ideal for pitched roofs (between and over rafters), flat roofs (warm deck constructions), and loft conversions, preventing significant heat loss through the roof structure.
• Walls: Excellent for cavity wall insulation (partial or full fill), solid masonry walls (internal lining), and timber or steel frame systems, enhancing the thermal envelope of the building.
• Floors: Perfect for insulating solid concrete floors (above or below slab), suspended timber floors (between or below joists), and as an effective base for underfloor heating systems to improve heat reflection and response times.

Delivery in and Around London

We offer reliable and efficient delivery of our 40mm PIR insulation boards throughout London and the surrounding home counties. Our delivery service covers all London boroughs, including Croydon, Lewisham, Southwark, Camden, and Hackney, as well as the wider Greater London area, encompassing Enfield, Bexley, Redbridge, and Barnet. We also serve the neighbouring counties of Kent, Essex, Surrey, and Hertfordshire. Trade quantities are always welcome, and we strive to ensure prompt availability to keep your projects on schedule.