Metal Roofing
7 articles in Metal Roofing.
How Long Does a Metal Roof Last? Aluminum vs. Steel vs. Asphalt
A quality aluminum roof can last 50 to 75 years or more, steel and Galvalume roofs last 40 to 70 years, and asphalt shingles last only 15 to 30 years. Lifespan is driven by corrosion resistance, coating quality, fastener design, and installation. Because aluminum cannot rust and Interlock pairs it with a fade-resistant Alunar coating and concealed-fastener interlocking design, an Interlock aluminum roof is engineered for a 50 to 75 year service life.
Read article →Metal Roofing vs. Asphalt Shingles: The Complete Comparison
Metal roofing and asphalt shingles differ most in lifespan, upfront cost, and long-term value. Asphalt is cheaper to install and simpler to repair, making it the sensible pick for tight budgets or short stays. A premium aluminum metal roof costs more upfront but lasts 50-75 years, resists 120 mph winds, hail, and fire, weighs a fraction of asphalt, and usually wins on total cost of ownership if you plan to stay in your home.
Read article →Aluminum vs. Steel Roofing: Which Is Better for Your Home?
Steel (Galvalume) is harder and cheaper up front, making it a strong value in dry, inland and hail-prone climates. Aluminum is lighter, never rusts, and dramatically outperforms steel in coastal or salt-air environments, often closing the price gap over a multi-decade lifespan. Interlock builds every system from aircraft-grade aluminum with a PVDF Alunar finish for lifetime corrosion immunity.
Read article →The Pros and Cons of a Metal Roof: An Honest 2026 Breakdown
A premium metal roof costs more up front and needs a certified installer, and some flat-pan profiles can show minor oil canning. In return you get a 50-75 year lifespan, UL 2218 Class 4 impact and Class A fire ratings, 120 mph wind resistance, lower cooling bills, and a transferable Lifetime Warranty. It's the right call for homeowners who plan to stay and want to buy once.
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What Makes Interlock an Industry Leader in Premium Metal Roofing
"Industry leader" is a claim every roofer makes. Interlock backs it with specifics: corrosion-proof aircraft-grade aluminum, the Alunar® PVDF coating, a concealed four-way mechanical interlock warranted to 120 mph, an expected 50–75 year service life, and a transferable Lifetime Limited Warranty. The same system the U.S. National Science Foundation chose for Antarctica is what goes on your home.
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Interlock Metal Roofing Systems Are Strong
Interlock roofs are made from aircraft-grade aluminum — pound-for-pound stronger than steel, about one-third the weight, and rust-proof. Formed into a four-way interlocking panel and finished in Alunar® coating, the system is light enough to install over an existing roof yet rated UL 2218 Class 4 for impact.
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Roofing Wind Damage: 120 MPH Rated Metal Roofs
Interlock metal roofs are tested and warranted to resist 120 mph winds — Category 2 hurricane strength — and are Florida Building Code approved for High-Velocity Hurricane Zones. The secret is a four-way mechanical interlock with no exposed fasteners for wind to catch and peel.
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