Sopratherm 40mm TB4040 PIR Insulation Board 2400 x 1200mm

Sopratherm (By Soprema) 40mm High-Performance Thin-Profile PIR Board

Sopratherm TB4040 is a versatile, high-efficiency insulation sheet specifically engineered to eliminate localized thermal bridging. Previously recognized as Celotex TB4040, this product is the 40mm which is part of the Sopratherm TB4000 series, a range designed to provide excellent thermal protection in slim profiles ranging from 25mm to 45mm.

These boards are manufactured from rigid polyisocyanurate (PIR) using sustainable blowing agents that boast zero ozone depletion potential (ODP) and a minimal global warming footprint. Each sheet is finished on both sides with low-emissivity aluminum foil facings to maximize heat retention.

Designed with both environmental impact and energy savings in mind, this high-performance board helps significantly lower household utility costs and reduce a building's overall carbon emissions. In warmer periods, the reflective properties of the foil facings also help to repel unwanted solar gain, potentially reducing the need for cooling systems. Sopratherm offers a reliable, all-season solution for modern building efficiency.

Why Choose Sopratherm TB4040 (Rebranded from Celotex) Sheets?

• Thermal Bridging: Explicitly developed to resolve heat loss at structural junctions.

• Slim Profile: Available in thicknesses from 25mm upwards, making it ideal for tight spaces in a standard 1200mm x 2400mm format.

• Versatility: Suitable for a diverse array of structural applications including wall, floor, and roof systems.

• On-Site Handling: Lightweight and easy to cut or tailor to specific shapes using standard tools.

• Enhanced Performance: Includes low-emissivity foil surfaces to optimize thermal resistance within cavity air gaps.

• Proven Efficiency: Provides consistent, long-term energy conservation for residential and commercial builds.

Applications for Sopratherm Multi-Purpose Boards

The TB4040 range is a universal solution, suitable for the following applications:

• Pitched & Flat Roof Systems

• Solid Masonry & Timber Framed Walls

• Steel Frame Wall Lining

• Suspended Timber Joist Floors

• Concrete Slab & Beam Floors

• Internal Wall Insulation

Featuring a high thermal resistance value of 0.022 W/mK, Sopratherm is the premier choice for PIR insulation when project depth is at a premium.

Technical Specifications:

Thermal Conductivity: 0.022 W/mK

R-Value: 1.8 m²K/W

Weight: 1.41 kg/m²

Thickness: 40mm

Board Coverage: 2.88m²

Compressive Strength: ≥120kPa (BS EN 826)

Core Material: PIR (Polyisocyanurate)

Vapour Resistance: >150MNs/g (BS EN 12086)

Fire Classification: Euroclass E

For the best trade prices on 40mm Sopratherm (the new name for Celotex), trust us for competitive rates and rapid delivery to your site.