SOPRATHERM PL4040 52.5mm Insulated Plasterboard

52.5mm SOPRATHERM PL4000 PIR Insulated Plasterboard (previously Celotex PL4000) combines a 40mm rigid polyisocyanurate (PIR) core with a 12.5mm tapered edge plasterboard. Engineered for internal wall insulation and pitched roof applications, this thermal laminate delivers a thermal conductivity of 0.022 W/mK alongside a finished internal surface ready for decoration.

Perfect for dry lining walls, ceilings and pitched roofs, this combined board system accelerates installation by eliminating the need to fit insulation and plasterboard separately. The integrated approach improves thermal efficiency in both residential and commercial properties whilst minimising heat loss. Available in thicknesses from 37.5mm to 77.5mm, the SOPRATHERM PL4040 meets diverse insulation needs. BBA certification confirms suitability for internal wall dry lining and pitched roof ceiling insulation, guaranteeing compliance with UK building regulations.

Pack Size & Coverage

1. Model: SOPRATHERM PL4040 - 40 mm - 2400 mm x 1200 mm (Previously Celotex PL4040)
2. Thickness: 52.5mm overall
3. PIR Thickness: 40mm
4. Plasterboard Thickness: 12.5mm
5. Length: 2400mm
6. Width: 1200mm
7. Board Coverage: 2.88m2
8. Pack Size: 1
9. R-Value: 1.85 m2K/W
10. Thermal Conductivity: 0.022 W/mk
11. Compressive Strength: 120 kPa
12. Density: 30Kg/m3
13. Material: PIR core ǀ Tapered edge wallboard
14. Vapour Resistivity: 100 MNs/gm
15. Finishing top: Kraft paper
16. Finishing bottom: Gypsum
17. Edge Profile: Straight edge
18. Applications: Wall linings ǀ Pitched and flat roofs
19. Vapour Control Layer: Yes, build in
20. Fixing method: Adhesive bonding ǀ Mechanical fixing
21. Features: Multi-purpose Insulated Plasterboard

Key Features & Benefits: SOPRATHERM PL4025 Insulated Plasterboard 2400 x 1200 x 52.5mm

1. Board Size: 2400mm x 1200mm insulated plasterboard panel
2. Insulation Thickness: 40mm PIR insulation bonded to 12.5mm plasterboard
3. High-Performance PIR Core: Manufactured from rigid polyisocyanurate (PIR) insulation for excellent thermal efficiency
4. Low Environmental Impact: Produced using blowing agents with low Global Warming Potential (GWP) and zero Ozone Depletion Potential (ODP)
5. All-in-One Insulation Solution: Combines PIR insulation and plasterboard in a single board for easier installation
6. Faster Installation: Reduces installation time compared with fitting insulation and plasterboard separately
7. Versatile Applications: Suitable for internal walls, ceilings and pitched roof insulation
8. Ideal for Refurbishment & New Builds: Perfect for upgrading existing properties or improving thermal performance in new construction
9. Energy Efficient: Helps reduce heat loss and improve energy efficiency, delivering reliable long-term energy savings

Application

• Internal Wall Insulation: Upgrading the thermal performance of solid masonry walls or existing cavity walls from the inside.
• Loft Conversions: Lining the underside of rafters or joists to create insulated living spaces.
• Flat Roofs: Used internally as a warm roof lining or under-deck insulation.
• Refurbishment: A quick way to improve the U-value of older properties during a renovation.

Info

Explore our complete range of Sopratherm insulation products. We deliver across the UK Mainland. For advice on product suitability, bulk pricing or to discuss your project requirements, contact us on 02039519012 / 02038839057, email sales@insulationbee.co.uk or use Live Chat for competitive UK insulation pricing.