Galvanized vs. Plated Roofs

April 30th, 2024 | By Dale Chastain

When it comes to metal roofing, two popular options are worth consideration: galvanized steel and zinc-plated. Homeowners and builders frequently ask, “What is the difference between galvanized steel and zinc-coated roofs?” and “Which is better: galvanized or zinc-plated?” Understanding the differences is vital in choosing the most suitable material for your roofing needs.

Understanding Galvanized Steel and Zinc-Coated Roofs

Galvanized steel roofs are known for their durability and resistance to rust. This is achieved by coating the steel with a protective zinc layer, which prevents corrosive substances from reaching the metal underneath. Zinc-plated, or zinc-coated, roofs involve a similar process but with a thinner layer of zinc. 

What is the Difference?

The main differences lie in the application method and thickness of the zinc coating. Galvanized steel typically undergoes a hot-dip process, where the steel is submerged in molten zinc, resulting in a thicker, more resilient coating. On the other hand, zinc-plated roofs generally involve electroplating, which is less expensive but results in a thinner and less durable coating than galvanization.

Which is Better: Galvanized or Zinc-Plated?

When considering “which is better: galvanized or zinc plated,” it’s vital to assess the environment and specific requirements of the roofing project. With its thicker coating, galvanized steel is generally considered more robust and better suited for environments with high exposure to moisture or corrosive elements. Its ability to withstand harsh weather makes it a preferred choice for many residential and commercial roofing projects.

On the other hand, zinc-coated roofs are suitable for projects with tighter budgets and less severe environmental conditions. However, the longevity and durability might be lower compared to galvanized steel.

Both galvanized and zinc-plated roofs have their advantages and ideal-use cases. The choice between the two depends on factors like environmental exposure, budget, and the desired lifespan of the roof. For those in harsher climates or seeking a longer-lasting solution, galvanized steel is often the superior choice. In contrast, zinc-plated roofs can be cost-effective for less demanding conditions. Consulting with knowledgeable roofing professionals can provide more personalized guidance for your roofing needs.

If you’re weighing the options between galvanized and zinc-plated roofing, let our team at Chastain Roofing help you make the right choice. Our expertise enables us to navigate the nuances of roofing materials, ensuring you choose the best option for your needs. Our team is dedicated to providing solutions that blend durability, cost-effectiveness, and environmental suitability. Ready to select the best roofing material for your project? Contact Chastain Roofing today for expert guidance and a personalized consultation.