A durable material that gets better with time
Weatherproof steel is a smart and sustainable choice when you want a bold, industrial look with zero need for surface treatment or maintenance. Thanks to its special alloy composition, this material develops a protective rust patina that safeguards the structure from corrosion – while enhancing its visual character.
With no limitations from coatings or paint, designers enjoy full freedom of form: from classic conical profiles to sculptural custom shapes and decorative elements. Weatherproof steel offers the performance of structural steel, while expressing a distinctive, evolving aesthetic that blends beautifully with nature and urban environments.
Sustainable and self-healing
The patina forms naturally from exposure to alternating humid and dry conditions, gradually deepening in tone. The resulting oxide layer prevents deep rusting and does not reduce material thickness, making it both long-lasting and environmentally conscious.
This material, often known by the trademark COR-TEN®, can also be painted—yet even scratches won’t compromise its longevity, as the surface self-seals against corrosion.
Case: Laukaa, Finland
Tehomet delivered custom weatherproof steel poles inspired by local prehistoric rock paintings, creating a landmark lighting solution that reflects the region’s ancient heritage.
Looking for an uncompromising combination of performance and presence? Contact our sales team to discuss a fully customized weatherproof steel solution.
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