Johannesburg
Cape Town
Durban
National, East London & PE
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Polystyrene Insulation For Cavity Walls
Polystyrene insulation boards for cavity walls provide superior thermal efficiency and easy installation. Simply order nationally from us or request a quote online today!
Enjoy Our Amazing Weekly Prices & Specials!
About Our Polystyrene Wall Insulation Boards
Polystyrene cavity wall insulation is an excellent choice for enhancing thermal insulation in green building projects.
Designed to meet South Africa's building regulations, this eco-friendly solution helps reduce energy consumption while maintaining a comfortable indoor environment.
Its lightweight and durable properties make it easy to install, ensuring long-lasting performance.
Choose polystyrene insulation to contribute to sustainable construction practices and improve energy efficiency in your building
Product Dimensions
By far the most cost-effective polystyrene sheet sizes for cavity wall insulation are our standard board sizes and thicknesses. Our building code requires at least a thickness greater than 40mm to meet thermal insulation requirements. Cold rooms will require significantly thicker boards.
Our standard board sizes by thickness (mm) x width (mm) x length (mm) are:
- 30mmx 1200mm x 2500mm
- 40mm x 1200mm x 2500mm
- 50mm x 1200mm x 2500mm
- 75mm x 1200mm x 2500mm
- 100mm x 1200mm x 2500mm
- 125mm x 1200mm x 2500mm
- 150mm x 1200mm x 2500mm
- 200mm x 1200mm x 2500mm
- 300mm x 1200mm x 2500mm
- 600mm x 1200mm x 2500mm
Polystyrene Density
Medium Density Polystyrene
Manufacture & Delivery
We cut our polystyrene wall insulation boards in Johannesburg, Cape Town, Durban & Port Elizabeth. We deliver directly from these locations.
Current Lead Times
We cut our polystyrene wall insulation boards on demand. Lead time can range from 3 to 7 working days.
Our Google Reviews
Since 2016, Polystyrene Product Company has remained the highest and best-reviewed national polystyrene supplier. We have delivered polystyrene to most places in South Africa and neighbouring countries. Service is everything to us!