Flatiron Steel manufactures Core Ten and Cold Roll "weathering steel". Core Ten is a high-strength, 22 gauge cold rolled steel of architectural interest produced from up to 30% recycled materials. After installation and exposure to normal weather the surface, in place, develops a pleasing iron oxide matte finish, which accents the appearance of any building on which it is used.

The weathering process that occurs after installation eventually decreases and from that point on the finish acts as a protective coating for the base metal. Core Ten never completely stops rusting. The fact that Core Ten will develop an oxide on its surface that essentially stops corrosion has been explained by laboratory analysis of the rust film. It was found that the alloying elements in the steel, particularly copper, chromium and nickel produced insoluble compounds that clogged the pores at the rust/steel interface, thereby ending the regeneration process.

Core Ten, in the clean environment of the intermountain west, can last two to three times as long as composition or wood shingles, up to eighty (80) years. Cold Roll steel, identical in appearance and weathering characteristics to Core Ten, does not contain the alloying elements of Core Ten, giving Cold Roll steel roofing a lifespan of up to fifty (50) years.

Both Core Ten and Cold Roll are top choices for architectural interest and can be used as:

• Your total roofing material
• An accent roof in conjunction with other elements of design
• An interior design focal point or backdrop, such as a textured ceiling, backsplash in the kitchen or bath, or wall treatment

Produced in a 7/8" corrugated wave pattern with 34 5/8" roof panel width coverage or 37 3/8" wall coverage, these materials represent a textural design element lending a rustic western weathered look to your building or interior project.

Core Ten or Cold Roll-your first choice in weathered roofing. Teton Steel offers both of these products manufactured to your specifications in just 1 to 3 days.