SOPRATHERM PL4025 37.5mm PIR Insulated Plasterboard

37.5mm SOPRATHERM PL4000 PIR Insulated Plasterboard (previously Celotex PL4000) is a thermal composite board combining a 25mm rigid polyisocyanurate (PIR) core with a 12.5mm tapered edge plasterboard finish. With a thermal conductivity of 0.022 W/mK, this board delivers reliable insulation performance for internal wall insulation and pitched roof applications.

Designed for dry lining applications, this composite plasterboard accelerates installation by eliminating the need to fit insulation and plasterboard separately. It's commonly specified for improving thermal efficiency in both residential and commercial properties, whilst minimising heat transfer through building envelopes.

The SOPRATHERM PL4025 range extends from 37.5mm to 77.5mm overall thickness, accommodating diverse insulation demands. BBA certification confirms suitability for internal wall dry lining and pitched roof ceiling insulation, meeting UK building standards requirements.

Pack Size & Coverage

1. Model: SOPRATHERM PL4025 - 25 mm - 2400 mm x 1200 mm (Previously Celotex PL4025)
2. Thickness: 37.5mm overall
3. PIR Thickness: 25mm
4. Plasterboard Thickness: 12.5mm
5. Length: 2400mm
6. Width: 1200mm
7. Board Coverage: 2.88m2
8. Pack Size: 1
9. R-Value: 1.20 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 37.5mm

1. Board Size: 2400mm x 1200mm insulated plasterboard panel
2. Insulation Thickness: 25mm 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

Browse our full range of Sopratherm insulation products for comprehensive thermal solutions. We deliver across the UK Mainland. For technical advice on product suitability, quantity discounts, or project specifications, contact us on 02039519012 / 02038839057, email sales@insulationbee.co.uk or use Live Chat for competitive UK pricing.