Rapidly developing technical progress makes it possible to create such a huge amount of building materials that often our eyes are dazzled by such a variety. Thermal insulation materials have not been spared this trend either. From the list of the most affordable and popular thermal insulation materials suitable for screed insulation, it is possible to single out expanded polystyrene and extruded polystyrene foam. The characteristics and properties of these types of material are approximately the same, but in price they may differ from each other..
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Polyfoam can be safely classified as a budget material. What cannot be said about insulation made of extruded polystyrene foam: it belongs to the more expensive and modern materials.
In terms of installation and the use of both types of materials for thermal insulation of the screed, the main difference between them from each other is that expanded polystyrene has a much greater strength and a wider range of sheets with the required quarter sizes. These indicators allow you to lay the material in one layer, and thanks to the quarters, small bridges of cold at the joints between the sheets can be avoided. Of course, it is possible to lay insulation in one layer only if this thickness is sufficient to insulate the room..
