In Finland and Europe, only sustainably produced wood harvested from certified forests is used. European forests are managed based on the criterion of sustainable development. The annual growth of the forests is considerably greater than what is removed.
The origin of the wood products is known. Wood is the only building material whose legal origin and sustainable production can be certifiably proven.
Globally there are about 50 forest certification systems. The most widely used are PEFC (Programme for the Endorsement of Forest Certification) and FSC (Forest Stewardship Council). Finland may certify forests based on the principles of both of these, but the prevailing system is PEFC. About 95% of Finland’s forests in commercial use are certified in accordance with the Finnish PEFC system. International PEFC ensures that the national systems in different countries observe the international requirements for certification. The Finnish PEFC system was accepted for the international PEFC system in 2000.