Ruko obtained its first environmental approval in 1996 and have since worked goal-oriented with environmental improvements. As a result Ruko obtained environmental certification in 1998 from Danish Standards Association for its environmental management system.

Certification was according to the international ISO 14001 standard. These initiatives have not only reduced the environmental impact of Ruko's production; they have also had a positive effect on the economy. Also employees have displayed keen interest in environmental measures.

Ruko participates in a local environmental cooperative with the municipality of Herlev, who undertakes environmental supervision of Ruko and three other iron industrial companies within the municipality.