62.5mm Celotex PL4000 Insulated Plasterboard

62.5mm Celotex PL4000 insulated plasterboard combines a polyisocyanurate (50mm PIR) insulation core with paper facing and a 12.5mm tapered edge plasterboard laminate for straightforward installation. This multi-purpose product suits numerous applications including roof and internal wall lining projects.

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

Properties

Brand: Celotex PL4000

Thickness: 62.5mm overall (50mm pir insulation bonded to 12.5mm plasterboard)

Dimensions: 2,400mm x 1,200mm x 62.5 mm

Compressive Strength: 120 kPa

Density: 26 - 36 kg/m³

Length: 2400mm

Width: 1200mm

Material: PIR core ǀ Tapered edge wallboard

R-Value: 2.3 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 62.5mm Celotex PL4000 delivers outstanding thermal performance with 0.022 W/m.K thermal conductivity, allowing thinner insulation layers to meet target U-values. This 2-in-1 product combines insulation and plasterboard, streamlining installation for wall and roof dry lining in a single step. The rigid construction simplifies transport, handling, and fitting. BBA certified for plasterboard thermal laminate use, the Celotex 62.5mm PL4000 meets all performance requirements when installed and maintained per certificate specifications.

Applications

This 62.5mm insulation board delivers integrated thermal insulation and plasterboard for diverse building scenarios. Applications include under-rafter and under-joist insulation, 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 strong environmental credentials and supports BREEAM assessment performance documentation.

About

Celotex PL4000 is a 50mm PIR insulation board with paper facing, bonded to 12.5mm plasterboard. Engineered to provide an efficient combined solution for wall and roof insulation with dry lining, it achieves excellent thermal performance and reduces the insulation thickness needed to reach target U-values.

The 62.5mm insulated plasterboard suits under-rafter or under-joist applications, solid masonry walls, and timber frame lining. Its rigid structure ensures simple transport, handling, and installation.

Info

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