Internal Solid Walls
Use Celotex PL4000 high performance thermal insulation in internal solid wall applications
Product Features:
- Lambda: 0.022 W/mK
- PL4000 provides insulation and plasterboard as one, helping reduce installation times
Application Benefits:
- Reduces heat bridges formed by mortar joints
- Ideal where no cavity exists
- Provides reliable long term energy savings for buildings
- Offers the installer maximum flexibility and installation speed due to the tapered
edge plasterboard
- Is suitable for both direct bonding (‘dot and dab') and mechanical fixing installation
- Provides a vapour control layer (VCL) when board joints are taped and jointed
- Particularly suited to refurbishment projects
For product and application details, please download the Internal Solid Wall insulation application datasheet.

Internal Solid Walls
Celotex PL4000 Installation
Project video