High-performance heat insulation properties of timber are internationally known; wooden walls securely protect both from cold and heat. In addition, modern solid timber panels possess undeniable advantages; owing to the fact that for their production crisscross fastening is used, they have no heat leakage points, therefore their heat-shielding performances are at least 35% higher than those of the traditional glue laminated lumber. In this type of house a comfortable temperature can be maintained in every season.
In the energy efficient house the side facing north has as few windows or other light-transparent constructions as possible, and must be securely insulated from the cold. While the maximum number of translucent constructions that would allow the rays of the low winter sun must be located on the southern side: up to 60% of all windows must be on the southern side and up to 40% – on the eastern side.
Furthermore, the presence of massive heat accumulating – in winter – and cold accumulating – in summer – walls and floor slabs enable large amounts of the “free-of-charge” energy, necessary for the preservation of a comfortable temperature in the energy efficient house, to be inactively obtained from the environment.
Well-made thermal insulation protects the building from destruction caused by displacement of the ‘dew-point’ to the centre of the wall and subsequent condensate formation in places of substantial temperature difference, ie. from fungoid growth, mould and cracks in the constructions.
The quality level of the winter frost protection is determined by the compactness of the building, the presence of solid heat accumulating structural components, quality of the thermal insulating material, its heat-conduction coefficient, level of proofness against steam and heat-reflecting properties, thickness of the heat-saving jacket, quality of applying thermal insulation, absence of slots between its parts, absence of “heat bridges”, air sealing of the building, heat conductivity of the joints, butts, and seams.
But first and foremost, solid and impermeable walls protected from the outside with a decent heat insultaion layer have a positive impact on the inner climate of the building, retaining the heat in winter and preserving the coolness in summer, they help to maintain a healthy and comfortable environment.