72.5mm Celotex PL4000 Insulated Plasterboard

72.5mm Celotex PL4000 insulated plasterboard combines a 60mm polyisocyanurate (PIR) core with paper facing, laminated to 12.5mm tapered edge plasterboard. This dual-purpose product suits roof and internal wall lining applications across various thicknesses from 15mm to 65mm insulation thickness.

Standard boards measure 1200 x 2400mm with paper facing, achieving BRE Green Guide A+ rating and BBA approval (certificate 16/5357) for Plasterboard Thermal Laminate. Fire classification: Euroclass B-s1, d0 per BS EN 13501-1.

Properties

Brand: 72.5mm Celotex PL4060

Thickness: 72.5mm overall (60mm pir insulation bonded to 12.5mm plasterboard)

Dimensions: 2,400mm x 1,200mm x 72.5 mm

Compressive Strength: 120 kPa

Density: 26 - 36 kg/m³

Length: 2400mm

Width: 1200mm

Material: PIR core ǀ Tapered edge wallboard

R-Value: 2.75 m2K/W

Thermal Conductivity: 0.022W/mK

Vapour Resistivity: 100 MNs/gm

Fire Rating (Reaction to Fire): B(Class 0)

Finish: Kraft paper facings

Applications: Wall linings ǀ Pitched and flat roofs

Vapour Control Layer: Yes, build in

Fixing method: Adhesive bonding ǀ Mechanical fixing

Features: Multi-purpose Insulated Plasterboard

Product Benefits

The 72.5mm Celotex PL4000 delivers outstanding thermal performance with 0.022 W/m.K conductivity, minimising insulation depth needed for target U-values. This integrated 2-in-1 solution combines insulation and plasterboard, streamlining installation for simultaneous wall and roof insulation and dry lining. Rigid construction ensures straightforward transport, handling, and installation. The Celotex 72.5mm PL4000 holds BBA certification for plasterboard thermal laminate applications when installed and maintained per certificate specifications.

Applications

The 72.5mm insulation board delivers integrated thermal insulation and plasterboard for multiple uses. Ideal for under-rafter and under-joist layers, solid masonry walls, and timber frame lining.

1. Roofs - Pitched Roof Insulation - Between and Under Rafters
2. Roofs - Flat Roof Insulation - Balconies and Terraces
3. Roofs - Flat Roof Insulation - Between and Under Joists
4. Walls - External Wall Insulation - Upgrading Cavity Walls
5. Walls - External Wall Insulation - Timber Frame Walls
6. Walls - External Wall Insulation - Solid Walls

Time Saving

This product merges insulation and plasterboard into one unit, offering a convenient 2-in-1 approach for simultaneous insulation and dry lining of walls and roofs.

Sustainability

The A+ BRE Green Guide rating demonstrates environmental credentials, supporting BREEAM assessment performance.

About

Celotex PL4060 represents a 60mm PIR insulation board with paper facing, bonded to 12.5mm plasterboard. Engineered for efficient insulation and dry lining of walls and roofs, it achieves excellent thermal performance whilst reducing required insulation depth for target U-values.

The 72.5mm insulated plasterboard suits under-rafter and under-joist applications, solid masonry walls, and timber frame lining. Its rigid structure simplifies transport, handling, and fitting.

Info

Browse our Celotex range and filter by thickness or coverage on the left. For product suitability advice or bulk quotations, contact us on +4402038839057, email sales@insulationbee, or use Live Chat - Lowest UK Insulation Prices.