What if a roofing screw lasted as long as the roof sheet?
KINGI® roofing screws are subject to extremely stringent durability requirements. The result of careful product development, the KINGI® roofing screw withstands time, stress and wear without rusting. As a durable product, it is also ecological, as its long life cycle reduces the need for replacement and the amount of waste generated.
Modern coatings for steel roofing guarantee good corrosion resistance even in demanding climates. As early as the 1990s, Jorma Kinnunen developed the Pural® coating, which quickly became the market’s leading coating. Durable steel roofs have so far been fastened with roofing screws whose corrosion resistance does not meet the applicable requirements in atmospheric corrosivity categories C3-C4, which also include coastal areas and harsh urban and industrial environments.
Now, the durability of sheet metal roofs is improved by the KINGI® roofing screw developed by Jorma Kinnunen and approved for atmospheric corrosivity category C4 (ETA-25/0267). The KINGI® roofing screw combines corrosion resistance, improved installability, refined design and high-quality manufacturing. These top features make the KINGI® roofing screw, which crowns a steel roof in the only approved way.
Other roofing screws
Electrogalvanizing, 7-12 μm
Topcoat, 30-50 μm
Aluminium
Radialco design
The material of the KINGI® roofing screw is hardened carbon steel, which gives the screw strength and hardness. The Radialco design of the screw head ensures sufficient coating thickness even in corners exposed to wear.
Durabl3 coating
The Durabl3 coating withstands the mechanical stress caused by installation and protects the screw from rust. Its corrosion resistance is excellent even in climate stress class C4. When installation is carried out using a specially dimensioned KINGI® installation socket, the unusually thick Durabl3 coating is not damaged during installation. The IPR rights to the coating are protected internationally.
ISO 9001 – Quality Certificate
Tested Durability
The durability of KINGI® metal roofing screws has been tested through a series of demanding tests. Quality of the screws is continuously monitored by independent institutes.
Tested durability
KINGI® The durability of the roofing screw has been tested with a wide range of demanding tests, which it has passed excellently. We continuously monitor quality with the help of tests conducted by external institutions.