It is absolutely essential to reduce the amount of oil we consume. Although polystyrene is an oil-based product, only a small amount is required to produce it. This is because expanded polystyrene (EPS) effectively consists of 98 % air and only 2 % polystyrene, the cells which contain the air. For every litre of oil that is used to manufacture EPS building insulation, up to 200 litres of oil is saved over the life of the product. Thus, there is no better use for oil than the production of insulating material!
Comparison of insulation materials
The primary non-renewable energy input value of EPS stated in the current Environmental Product Declarations (EPD) developed in accordance with the standard ISO 14025 clearly show that EPS requires the use of far fewer fossil resources (oil, gas, coal, etc.) than the “ecological alternatives” mineral foam and wood fibre.
In the following table the primary non-renewable energy input values (PED n.r.) are given per functional unit (1 m² area with R = 1 m²·K/W).
|Insulation for ETICS||PED n.r. [MJ]||EPD-No.|
|Hemp fibre||49.45||baubook-Nr. 1383 ip|
|Mineral wool (MW)||75.88||EPD-DRW-20120113-IBC2-EN|
Fact sheet "EPS saves precious fossil resources" ( PDF, 128.51 kB)