Abstract
Eco-labeling systems to products,which have an advantage of environmentall aspects,are very effective to spread and make them known for uuse.However,many eco-labels have not been established on numerical standards,and so it is very difficult to select an appropriate product from all kinds of eco-materials.We have investigated faxtories of wooden building materials with eco-labels in Japan,and evaluated LCCO2,LCW of each material.As a result,LCCO2 and LCW of materials with the same eco-label are not necessarily similar with each other,therefore,the numerical evaluation methods for eco-materials are required in the near future.
