The Celotex GA4000 PIR Insulation Board is a high-performance, multi-purpose thermal insulation solution ideal for a wide range of building applications. Manufactured from rigid polyisocyanurate (PIR) foam and faced on both sides with a low emissivity aluminium composite foil, this 100mm thick board provides excellent thermal performance and energy efficiency in both new builds and refurbishment projects.

With a certified lambda value of 0.022 W/mK, it delivers superior thermal insulation performance while remaining lightweight, easy to handle, and simple to install.

Key Features:

• High Thermal Efficiency
  Exceptional performance with a low lambda value of 0.022 W/mK, contributing to reduced U-values and enhanced energy savings.
• Multi-Purpose Application
  Suitable for use in pitched roofs, flat roofs, solid masonry walls, timber frame walls, floors, and more.
• Aluminium Composite Foil Facing
  Provides enhanced thermal resistance and improves the boards suitability for use in reflective cavity wall applications.
• BBA Certified
  Assured performance and compliance with UK building regulations.
  BBA Certificate Numbers: 25/7318 and 25/7329
• Durable & Lightweight
  Easy to cut, lift, and install, reducing labour time on site. The boards maintain their shape and performance over time.
• Moisture Resistant
  The closed-cell structure of PIR foam resists moisture ingress, helping to preserve insulation integrity in damp conditions.

Technical Specifications:

Specification Details Product Code Celotex GA4100 Material Rigid Polyisocyanurate (PIR) Foam Facing Aluminium Composite Foil (Low-E) Dimensions 2400 mm 1200 mm 100 mm Thermal Conductivity 0.022 W/mK Coverage Area 2.88 m per board Compressive Strength 120 kPa Fire Rating Euroclass F (unmodified) BBA Certification 25/7318, 25/7329 Weight per Board Approx. 12.0 kg

Applications:

The Celotex GA4000 100mm insulation board is versatile and can be used in:

• Roofing Systems: Pitched and flat roofs (between or under rafters, or over joists)
• Wall Systems: Timber and steel frame walls, solid masonry walls, internal stud walls
• Flooring: Solid ground floors, suspended timber floors, concrete slabs
• Loft Spaces: Loft insulation for improved thermal efficiency

Installation Tips:

• Boards can be easily cut using a handsaw or utility knife.
• Always install in accordance with Celotex’s technical guidance and relevant building regulations.
• Use foil tape to seal joints where appropriate and reduce thermal bridging.
• Wear appropriate PPE during cutting and fitting.

Frequently Asked Questions (FAQs):

Q: Can Celotex GA4100 be used in external walls?
A: Yes. It is suitable for use in masonry cavity walls and timber or steel-framed external walls when properly detailed.

Q: Is the product compliant with current UK building regulations?
A: Yes, the Celotex GA4000 range is BBA certified and compliant when used as specified within approved applications.

Q: Does this board provide any sound insulation?
A: While primarily designed for thermal insulation, PIR boards can contribute to sound dampening when used in multi-layer constructions.

Q: Is a vapour control layer (VCL) needed?
A: Depending on application and location, a separate VCL may be required. Always consult technical specifications or a qualified professional.

Q: How should the boards be stored on site?
A: Store in a dry, flat area off the ground. Protect from direct sunlight and water ingress before installation.

Sustainability & Safety:

• Manufactured in facilities with ISO 14001 Environmental Management accreditation
• CFC/HCFC free with low Global Warming Potential (GWP)
• Non-hazardous, but standard precautions should be taken during handling and cutting

Warranty Information:

Celotex offers a manufacturers warranty on all GA4000 products, covering defects in materials and manufacturing under normal use and installation. For full warranty terms and conditions, consult the product’s official technical datasheet or Celotex customer support. Warranty is void if product is mishandled, misused, or installed outside of recommended practices.

Summary:

The Celotex GA4000 100mm Insulation Board is a high-performance solution for meeting todays demanding thermal standards in residential, commercial, and industrial builds. Lightweight, effective, and versatile, it remains one of the most trusted and specified PIR insulation products in the UK construction market.