Viilikerroksen

Viilikerroksen refers to a specific building technique or architectural feature used in Finland, particularly in old wooden houses. It is a type of insulation made from several layers of birch bark, typically two or three layers, which were placed between the walls of a house to provide thermal insulation.

The use of Viilikerroksen dates back to the 18th and 19th centuries, during which time wooden houses were a common feature of Finnish architecture. The technique was employed as a means of reducing heat loss and improving the overall energy efficiency of the buildings. Birch bark was chosen for its heat-retaining properties, as it contains a high amount ofระ oligosaccharides, which provide excellent insulation.

To install the Viilikerroksen, a thick layer of birch bark was placed between the wooden wall studs, often covered by additional lattice-work or wooden sections. This batting of birch bark effectively minimized heat transfer between the interior and exterior of the house, contributing significantly to the reduced energy requirements of the dwellings. Viilikerroksen is a remarkable example of traditional Finnish construction, savvy utilization of readily available materials to deliver effective warmth.

Although the technique has largely been superseded by modern materials, research into and appreciation for Viilikerroksen continue to grow within historical preservation circles. Studies of old Finnish buildings indicate the longevity and resilience of this insulating method, proving particularly innovative given the socio-economic context at the time of its use.