The story of SK Tuote started with a fastener invention made in 1974, which means that the company has more than 40 years of experience in the industry. Our current fastener system includes insulation and roof fastening elements for different bases on gently sloping roofs. The method has patents, registrations of designs, and certifications in different countries. Development has boosted design and SK Tuote's own type approved roof fastening calculation program is also now included in the system. Drawing testing is done to ensure that the fasteners endure installation work at minus 40 Celsius and keep roofs in place at wind of 30 m/s.