Metal roof warranties are the most misunderstood document in residential roofing. A typical homeowner sees "50-year warranty" on a brochure and assumes the entire roof is covered for 50 years. In reality there are four separate warranties on every metal roof, each covering a different failure mode, each with its own duration, exclusions, and transferability. If you don't know which one applies to a given problem, the manufacturer and the installer will both point at each other and your claim goes nowhere. This page is the contractor's-eye view of how those four layers actually function — and where they fail.
What it covers: Perforation of the steel or aluminum base material from corrosion working through from the back side. Specifically: rust-through that creates a hole in the panel.
Duration: 25 years on standard Galvalume steel, 35 years on heavyweight Galvalume Plus, 40 years on aluminum (typically lifetime on aluminum from premium manufacturers), 50+ years on copper.
What it doesn't cover: Surface rust, edge rust where panels were field-cut and the cut edge wasn't primed, galvanic corrosion from mixing dissimilar metals (e.g. copper flashings on galvanized panels), and any corrosion within ~1,500 feet of saltwater unless aluminum substrate was specified. The salt-air exclusion catches Bolivar Peninsula and Galveston West End installs constantly — it's why we refuse to quote steel substrate near the coast.
What it covers: Color fade beyond a defined ΔE value (typically 5–7 Hunter units), chalking beyond a defined ASTM rating, film adhesion failure (peeling), and cracking.
Duration: Kynar 500 / Hylar 5000 (PVDF fluoropolymer) — 30 years no fade, 35–40 years prorated. Standard SMP (silicone modified polyester) — 20–25 years prorated, with much weaker fade specs. The Kynar upgrade is the single best dollar you'll spend on a Houston metal roof — our UV load destroys SMP coatings in 12–18 years on south- and west-facing slopes.
The prorated trap: Most paint warranties are prorated against original cost. A "40-year warranty" that pays out at 30% of original panel cost in year 25 isn't going to fund a re-roof. Read the proration schedule before signing.
This is the warranty that actually matters and the one most homeowners don't get because their installer wasn't certified.
What it covers: Water intrusion through the installed roof system, including the panels, the seams, the flashings, the penetration boots, and the trim. If a leak develops anywhere in the assembly the manufacturer comes out and pays for the repair (and in some programs, the resulting interior damage).
Duration: 10, 15, or 20 years depending on manufacturer program tier. Englert, Petersen PAC-CLAD, Drexel Metals, ATAS, and DECRA all offer system warranties at varying tiers.
The catch: Issued only on installs performed by manufacturer-certified contractors following published assembly specs, with all certified components (panels, clips, flashings, fasteners, sealants from the same manufacturer's approved list). A roofer who installs the panels but uses generic flashings and an off-brand butyl sealant has voided your weathertight warranty before he leaves the driveway. RISE Roofing is certified with Englert, Drexel Metals, Petersen, and DECRA — we file the weathertight warranty paperwork as part of every certified install.
What it covers: Anything that fails because of how the roof was installed — flashing details, fastener pattern, penetration boots, valley assemblies, trim transitions. The substrate, paint, and panels are someone else's warranty; the install is the contractor's.
RISE Roofing's coverage: Lifetime workmanship warranty on every metal install we do — for as long as you own the home, transferable once at sale, no proration, no gotchas. If our crew installed it wrong, we fix it. The lifetime guarantee is unusual in the trade because most workmanship warranties are 1–10 years; we offer it because our metal install crews are direct employees, not subcontractors, and we control the install discipline end-to-end.
Most substrate and paint warranties are non-transferable; the original owner is the only beneficiary. Weathertight and workmanship warranties from RISE Roofing transfer once at sale with a written transfer request — a meaningful resale advantage if you sell within the warranty period. We process transfers free of charge.
Want a copy of the specific warranty package we file on your project? Call (832) 345-9527 — we'll walk you through every layer line by line before you sign the contract.
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