Quality and durability
Let’s put the facts on the table – Proven and legally durable.
We base our product promises on genuine testing, not assumptions. Here you will find all the test reports, certificates and technologies that make Kingi® demonstrably the only carbon steel coating screw approved for outdoor use.
ETA approval
The new Building Act requires the correct fastener for roofs. Read why Kingi’s new ETA-25/0267 makes it the only legal choice for outdoor use.
Kingi’s Technology
King’s unique durability stems from three innovations: the patented DurabI3 coating, the CrownD crown base, and the FastFX tip.
Proven quality
Kingi’s operations and manufacturing are ISO 9001 quality certified. The product’s quality assurance is carried out in accordance with standards SFS-EN ISO 3269 and SFS-EN ISO 10666:1999. Quality is regularly monitored through quality tests conducted by an external research institute.
RT card
For design and supervision support. Download the official Finnish RT cards.
Roofing screw tests
The corrosion resistance and drillability of Kingin and other roofing screws have been tested in HAMK’s comprehensive tests. Learn about the tests and see how different roofing screws perform in the comparison.