The above-ground section of the building is mostly formed by the walls. Considering their exterior, not only their solidity is of big relevance – support for the roof construction, but also insulating characteristics – reservation from changing weather conditions and enormous heat losses.
This last characteristic is specifically significant in our climate zone.
An important task in which architects must succeed is the selection of an optimal technical solution for the external wall insulation. In various circumstances, economic short-sightedness prevails and the selection is made to apply single-layer wall technique without insulation. In the multiple-layer surface purposes are divided among two or indeed three components. One has solely (or mostly) structural purpose, the other has a purely insulating purpose, and possibly also another component of protective and ornamental purpose. Therefore, thermal insulation depends predominantly on the thickness of the insulating material layer. Smaller or greater diameter of this layer does not change the composition of the surface (of the other layers) or the expense for its elevation. The change in thermic insulation features interests solely the price of insulation and influences the price of the entire structure to a small degree.
Determining the most economically effective diameter of the thermic insulation layer conforming to the criterion of the shortest payback period or the lowest expenses for the long-term use cycle is supposed to be the starting place for the financier to reach an accord on the selection of wall composition and thickness of the thermal insulating component.