Foil-Faced PIR Insulation Board – 1200 x 2400mm

Product Overview:
Foil-Faced PIR Insulation Board is a rigid, high-performance thermal insulation board supplied in a standard 2400 × 1200mm sheet. It features a polyisocyanurate foam core faced with low-emissivity foil on both sides, helping to reduce heat transfer through walls, floors and roofs. Available in multiple thicknesses, it allows the required insulation depth to be selected according to the construction detail and target thermal performance.
PIR board is commonly installed in pitched roofs, flat roofs, cavity walls, timber and steel-framed walls, and solid ground-floor applications. Its high thermal performance allows effective insulation to be achieved with a comparatively slim build-up, making it useful where available space is limited. The rigid boards are lightweight, straightforward to measure and cut, and compatible with established building methods. Correctly fitted boards should be closely butted, with joints and penetrations treated according to the specified insulation system to minimise thermal bridging and unwanted air leakage.

Key Features
• High-performance rigid PIR thermal insulation
• Low-emissivity foil facing on both sides
• Available in a choice of insulation thicknesses
• Standard 2400 × 1200mm board dimensions
• Suitable for walls, floors and roof applications
• Provides effective insulation with a relatively slim build-up
• Lightweight and straightforward to handle on site
• Can be measured and cut using standard hand tools
• Compatible with common masonry, timber-frame and roof construction methods
• Resistant to moisture absorption when correctly stored and installed

Typical Applications
• Pitched roof insulation
• Flat roof construction
• Cavity wall insulation
• Timber-frame walls
• Steel-frame buildings
• Solid ground floors
• Suspended timber floors
• Internal wall insulation
• Extensions and refurbishment projects
• Commercial and domestic construction

Frequently Asked Questions:
Q. Which thickness of PIR insulation board do I need?
A. The required thickness depends on the construction type, existing materials and target U-value. Check the project specification or obtain a thermal calculation before ordering.

Q. Can foil-faced PIR insulation board be cut?
A. Yes. It can be cut using a fine-toothed saw or suitable insulation knife. Measure carefully and cut accurately to avoid gaps between boards.

Q. Can PIR board be used in walls, floors and roofs?
A. Yes, subject to the relevant construction detail. It is commonly used in all three applications, but installation methods and required thicknesses will differ.

Q. Is PIR insulation board structural?
A. No. PIR board provides thermal insulation and should not be treated as a structural or load-bearing component unless used within an independently specified proprietary system.

Q. Should the joints between boards be taped?
A. This depends on the installation system. Foil tape is commonly used to seal board joints, but the project specification and manufacturer’s instructions should be followed.