Polystyrene Insulation
Polystyrene insulation boards provide a lightweight and cost-effective solution for improving thermal performance across floors, walls and external insulation systems. Commonly used in both residential and commercial construction, they offer reliable insulation properties while remaining easy to handle, cut and install on site.
Discover Our Product Range:
| Brand | Product | Sheet Size |
| YBS | Polystyrene Insulation | Various |
| EWI | 20mm EPS Board | 0.6m x 1.2m |
| EWI | 30mm EPS Board | 0.6m x 1.2m |
| EWI | 50mm EPS Board | 0.6m x 1.2m |
| EWI | 90mm EPS Board | 0.6m x 1.2m |
| General Boards | 50mm Polystyrene Board | 2.4m x 1.2m |
| General Boards | 100mm Polystyrene Board | 2.4m x 1.2m |
| General Boards | 30mm Thermal Board | 2.4m x 1.2m |
| General Boards | 50mm Thermal Board | 2.4m x 1.2m |
| General Boards | 75mm Claymaster Board | 2.4m x 1.2m |
| Jablite | 25mm EPS 70 | 2.4m x 1.2m |
| Jablite | 50mm EPS 70 | 2.4m x 1.2m |
| Jablite | 75mm EPS 70 | 2.4m x 1.2m |
| Jablite | 100mm EPS 70 | 2.4m x 1.2m |
What is polystyrene insulation?
Polystyrene insulation, often referred to as EPS (expanded polystyrene), is a rigid foam insulation material made from fused polystyrene beads. Its closed-cell structure provides effective thermal insulation while remaining lightweight, durable and resistant to moisture absorption.
Most common applications
- Solid floor insulation
- External wall insulation systems (EWI)
- Cavity wall insulation
- Roof insulation applications
- Under concrete slabs and screeds
EPS insulation is widely used in buildings due to its versatility and ability to reduce heat transfer across multiple construction elements.
Why choose polystyrene insulation
- Cost-effective solution
- Lightweight and easy to handle
- Good thermal performance
- Moisture resistant closed-cell structure
- Suitable for a wide range of applications
Its durability and stable thermal properties help improve long-term energy efficiency in buildings.
Popular brands
- Jablite
- Kay-Cel
- Unilin
- Styrofoam (Dow)
- Kingspan EPS
FAQ’s:
What is EPS insulation used for?
EPS insulation is commonly used in floors, walls and roofs to improve thermal performance and energy efficiency in buildings.
Is polystyrene insulation suitable for floors?
Yes, it is widely used beneath concrete slabs and screeds due to its compressive strength and durability.
What does EPS 70 mean?
EPS 70 refers to the compressive strength rating of the board, indicating it is suitable for general insulation applications such as floors and walls.
Is polystyrene insulation easy to install?
Yes, EPS boards are lightweight, easy to cut and simple to handle, making them quick to install on site.