Hirsihovi in Tampere

Log houses are proven to have healthy indoor air. Several studies and surveys have shown that people living in log houses are very satisfied with the indoor air quality. The results of these studies can be found, for example, in the 2012 report published by the National Institute for Health and Welfare (THL).

Logs and wood surfaces have also been found to have antibacterial effects. Here are some online articles on the subject:

• YLE: Timber kills bacteria, but why isn't it used in hospitals or kindergartens?

• TEK online magazine: Pine is the bogeyman of hospital-acquired infection

The production of log houses is self-sufficient in terms of energy, as the production chain for log buildings generates more energy fractions as a by-product than is used to manufacture the product itself. The resulting wood chips and pulp are renewable energy that reduces the carbon footprint and replaces imported energy.

Timber is a renewable natural material. A growing forest produces new biomass and absorbs atmospheric carbon dioxide. Consumption of timber  products contributes to forest growth and thus reduces greenhouse gas emissions. Timber products sequester atmospheric carbon dioxide over their life cycle, so wood and wood products play a key role in preventing global warming.

Finland's sustainably managed forests produce significantly more good quality timber than is used. Annual forest growth is about 110 million cubic metres, of which about half is used.

The project is being built by Ollikaisen Hirsirakenne Oy , a family-owned company in Pirkanmaa, known for its high quality. Ollikainen has over 50 years of experience in log construction. Ollikainen's modern woodworking technology and log building know-how are undoubtedly among the best in the country.

Ollikainen is a well-known and reliable Finnish log house manufacturer that builds high-quality log houses. Our log buildings combine the finest traditions of the industry with a modern understanding of space and comfort. In Ollikainen's log houses you can experience the inimitable atmosphere of Finnish cultural and building tradition. Our designs are based on the concept of harmony between man and nature.

Yes, it is. The conformity of Ollikainen log houses is monitored by Eurofins Expert Services (formerly VTT Expert Services Oy). Ollikaisen Hirsirakenne Oy has also been granted a European Technical Assessment (ETA 13/1064) and the right to use the CE marking. The CE marking is the manufacturer's guarantee of the product's performance.

The CE marking of construction products is based on the European Union's Construction Products Regulation, which entered into force on 1 July 2014. The CE marking requires both testing of product characteristics and assessment of the manufacturer's procedures for design, testing, manufacture and implementation. Product characteristics are determined by harmonised methods, providing the consumer with accurate and reliable information to facilitate product comparison.

A Declaration of Performance (DoP) is a document that states the values and classes of the properties specified for a product. A construction product is assessed for its essential characteristics of durability, usability, safety and health.

Reliable quality is also a priority for Ollikainen's customers. Every year, Rakennustutkimus RTS Oy surveys the opinions of customers of Finland's largest log manufacturers on their chosen supplier. According to the RTS survey, customers are very satisfied with Ollikaisen Hirsirakenne as a manufacturer.