Celotex Insulated Plasterboard 37.5mm x 2.4m x 1.2m

Celotex Insulated Plasterboard 37.5mm x 2.4m x 1.2m

The Celotex PL4000 37.5mm Insulated Plasterboard combines high-performance PIR (polyisocyanurate) insulation with a 12.5mm tapered edge plasterboard, laminated into one easy-to-install unit. With a total thickness of 37.5mm (25mm PIR + 12.5mm plasterboard), this versatile product provides thermal insulation, dry lining, and vapour control in a single board, helping to reduce installation time and maximise efficiency.

The product is designed for use in internal wall and pitched roof lining applications, where space is limited but thermal efficiency is essential. It features a low emissivity foil facing on the insulation layer, and is BBA certified (25/7360), ensuring regulatory compliance and peace of mind.

Key Features:

• All-in-One Solution
  Combines insulation, dry lining, and vapour control in a single product – ideal for fast and efficient refurbishment or new build applications.
• Excellent Thermal Performance
  Rigid PIR core with a low lambda value of 0.022 W/m·K, helping you meet thermal targets and reduce energy consumption.
• Standard 12.5mm Tapered Edge Plasterboard
  Provides a high-quality surface ready for finishing with paint, wallpaper, or plaster skim.
• Lightweight & Easy to Install
  Boards can be installed using direct bonding (dot-and-dab), mechanical fixings, or a combination of both.
• Moisture & Vapour Control
  The foil facing on the PIR core provides vapour resistance, helping to manage condensation risks in internal walls and roof spaces.
• BBA Certified (25/7360)
  Independent certification ensures long-term performance and compliance with UK building standards.

Technical Specifications:

Typical Applications:

• Internal Solid Wall Lining – Directly bonded or mechanically fixed to improve insulation performance
• Pitched Roof Insulation – Installed below rafters to add thermal efficiency
• Room-in-Roof Conversions – Effective space-saving insulation for attic and loft renovations
• Upgrading Existing Walls – Ideal for retrofitting insulation in older buildings

Installation Options:

• Adhesive Bonding (Dot and Dab) – Fast and widely used for fixing to masonry
• Mechanical Fixings – For installation onto timber or metal stud framing
• Hybrid Method – Combination of adhesive and mechanical fixing for added stability

Important:
Always follow Celotex’s official installation guidelines and ensure compliance with Building Regulations Part L.

Frequently Asked Questions (FAQs):

Q: Can Celotex PL4000 be skimmed or painted directly?
A: Yes. The 12.5mm plasterboard facing is suitable for direct finishing with skim coat plaster or paint once properly prepared.

Q: Is this suitable for use in bathrooms or kitchens?
A: While the PIR core resists moisture, the plasterboard should be treated or replaced with moisture-resistant board in high-humidity areas.

Q: Can I install this product using dot-and-dab adhesive?
A: Yes. The product is designed for direct bonding as well as mechanical fixing. Ensure a continuous adhesive bed is used around board perimeters for best vapour control.

Q: Does the foil facing act as a vapour control layer?
A: Yes. The foil facing provides significant vapour resistance, reducing condensation risk when installed with sealed joints.

Q: What is the fire performance of Celotex PL4000?
A: The PIR insulation core has a Euroclass F rating (unmodified), and the plasterboard component adds passive fire resistance. For specific fire-rated constructions, consult Celotex or a fire engineer.

Certifications & Compliance:

• BBA Certificate: 25/7360
• Thermal Performance: Meets and exceeds standards under Part L of Building Regulations
• Manufacturing Standards: ISO 9001 (Quality), ISO 14001 (Environmental)

Warranty Information:

Celotex provides a manufacturer’s warranty covering materials and performance of PL4000 boards when installed correctly and used as intended. This includes resistance to thermal degradation, durability, and structural integrity under normal conditions.

Note: Warranty may not apply if the product is mishandled, improperly installed, or used in non-specified applications. Refer to Celotex’s technical documentation or contact their support team for details.

Summary:

The Celotex PL4000 37.5mm Insulated Plasterboard delivers thermal insulation, dry lining, and vapour control in one convenient product. It’s the perfect choice for fast-track construction, energy efficiency upgrades, and tight-space insulation solutions.

Whether you’re lining walls, upgrading room-in-roof spaces, or renovating existing buildings, PL4000 offers performance, reliability, and ease of installation from one of the UK’s leading insulation brands.