{"id":2295,"date":"2022-02-03T11:05:00","date_gmt":"2022-02-03T11:05:00","guid":{"rendered":"https:\/\/www.atozroofingdenver.com\/?p=2295"},"modified":"2022-02-21T23:22:09","modified_gmt":"2022-02-21T23:22:09","slug":"galvalume-vs-galvanized-roofing","status":"publish","type":"post","link":"https:\/\/www.atozroofingdenver.com\/galvalume-vs-galvanized-roofing\/","title":{"rendered":"Galvalume vs Galvanized Roofing"},"content":{"rendered":"\n
If you’re thinking about installing a metal roof, you may have heard of two different types of steel-based options: galvalume and galvanized steel. What are the pros and cons of each and how do they differ from one another? Read on to learn which option might be best for your roofing needs.<\/p>\n\n\n\n
Introduced in 1972 by Bethlehem Steel, the galvalume process blends a steel base with zinc, silicon and aluminum where steel sheets are hot-dipped in zinc and aluminum alloys. This combination prevents corrosion and oxidation. The special zinc coating also keeps any scratches on the metal from rusting over time.<\/p>\n\n\n\n
While galvalume is relatively new, galvanizing has been commonly used for nearly two centuries. With galvanization, carbon steel is dipped in hot molten zinc, creating a durable alloy coating that fights corrosion. Once very popular, galvanized metal has become harder to find with the advent of galvalume.<\/p>\n\n\n\n
Although both processes are similar, there are some noteworthy differences and limitations associated with each material option.<\/p>\n\n\n\n
Due to their zinc coatings, both galvanized metal and galvalume are corrosion-resistant. If galvalume\u2019s coating is scratched away or wears down over time, however, corrosion can occur. Galvalume’s biggest advantage over galvanized metal is the inclusion of aluminum, which is resistant to corrosion.<\/p>\n\n\n\n
Although galvanized metal is resistant to corrosion, it isn\u2019t as effective as galvalume. It also tends to form red rust whenever the zinc coating is scratched. Because galvalume provides superior durability and corrosion resistance, most metal roofing has moved from galvanized to galvalume.<\/p>\n\n\n\n
Galvalume steel is typically used in industrial environments. It\u2019s also commonly used for walls and roofing for both residential and commercial buildings. That said, it\u2019s generally not suitable for metal roofing for structures with animal confinement since manure-related gas emissions can degrade the metal coating.<\/p>\n\n\n\n
Galvanized metal is commonly used for an array of similar applications, but can be more difficult to install. Similar to galvalume roofs, galvanized metal performs better in dry climates where excess water and salt are less of an issue.<\/p>\n\n\n\n