Galvanized & Stainless Steel For Roofing

For decades, Curtis Steel Company, LLC has supplied the roofing industry with dependable flat-rolled steel materials designed for performance and longevity. From galvanized steel sheet to stainless steel roofing sheet, our extensive inventory and precision processing capabilities support everything from commercial structures to specialized building systems. Each meets ASTM specifications and is stocked in the gauges and widths most often used for roofing, siding, and architectural panels.

Galvanized Steel Sheet Roofing Distributor

As a leading galvanized steel sheet roofing distributor, Curtis Steel supplies high-quality galvanized coils and sheets manufactured to ASTM A653 and ASTM A879 standards. Our galvanized steel products provide a tough, zinc-based coating that forms a continuous barrier against moisture, oxidation, and wear.

Galvanized Steel Coating Weights

The effectiveness of galvanized steel in preventing corrosion hinges on its zinc coating, which acts as a sacrificial layer protecting the underlying steel. This coating's thickness is measured by coating weights such as G30, G60, or G90. Generally, a heavier coating provides superior corrosion resistance, aligning with higher material costs.

Curtis Steel specializes in G90 Galvanized Steel. Our expertise shows G90 offers the optimal balance of cost-effectiveness and robust corrosion protection, making it a customer favorite for a diverse range of industrial projects.

G30 (0.3 oz/sqft zinc coating): Typically for indoor applications with minimal corrosion exposure.
G40 (0.4 oz/sqft zinc coating): Suited for indoor environments and lighter HVAC uses in drier climates.
G60 (0.6 oz/sqft zinc coating): Common for HVAC and light-duty outdoor applications in mild climates.
G90 (0.9 oz/sqft zinc coating): Our specialty; provides robust corrosion resistance for various indoor, outdoor, and industrial applications.
G115-G360 (Specialized heavier coatings): Designed for highly corrosive environments or extended lifespan requirements.

Steel Grades for Roofing Applications

Galvanized steel grades are crucial as they define the material's mechanical properties, including Yield Strength, Tensile Strength, and Elongation, which directly impact its suitability for specific applications.

Our team's expertise is paramount in guiding you to the optimal grade for your project's unique demands. Curtis Steel specializes in Commercial Steel (CS) grades, known for dependability and cost-effectiveness across a wide range of uses. We can also help you navigate and source other grades if necessary.

Extra Deep Drawing Steel (EDDS)
Deep Drawing Steel (DDS Type A, DDS Type B)
Forming Steel (FS Type A, FS Type B)
Commercial Steel (CS Type A, CS Type B, CS Type C)
Structural Steel (SS) - designated by the grade of yield strength. Some grades include A36, SS40, Grade 50, etc.
High Strength Low Alloy Steels (HSLA)

Stainless Steel Roofing Sheet Distributor

As a leading stainless steel roofing sheet distributor, Curtis Steel stocks Type 304 stainless steel (2B finish) in 48" × 120" sheets, available in thicknesses from 7 GA to 26 GA.

Material Properties and Benefits

Type 304 stainless, known as 18-8 stainless steel, contains at least 18% chromium and 8% nickel. This alloy offers:

High corrosion and oxidation resistance
Excellent strength when cold-worked
Nonmagnetic characteristics ideal for architectural design

Request a Quote From Your Galvanized and Stainless Steel Roofing Steel Sheet & Coil Distributors

Curtis Steel Company, LLC supplies galvanized and stainless steel sheet and coil materials trusted across the roofing industry. With decades of experience, extensive inventory, and precision in-house processing, we help customers meet structural, performance, and visual objectives.

The material resists rust, staining, and most oxidizing acids, making it ideal for roofing, flashing, and coastal construction.