In Texas, a metal roof typically lasts 30 to 70 years, and which end you land on depends mostly on the panel style. A standing seam roof, with its hidden fasteners, runs 50 to 70-plus years, while a screw-down (exposed-fastener) roof lasts about 20 to 30, because the rubber washers on the screws wear out around 10 to 20 years and start to leak. The metal matters too: aluminum and Galvalume steel hold up best in our heat, and copper can last a century. Either way, a metal roof outlasts asphalt shingles two or three times over, which is why it pays off despite the higher upfront cost. At BH Roofing we install and inspect metal roofs across San Antonio, and the 27-point inspection is free.
Most metal roofs in Texas last somewhere between 30 and 70 years, but that range is wide for a reason, and “30 to 70” isn’t a useful answer if you’re trying to decide. The honest version is that the number depends far more on how the roof is built than on the fact that it’s metal. A standing seam roof can pass 70 years. A cheaper screw-down roof might need attention at 20. Same material, very different lifespans.
So instead of one fuzzy number, here’s how long each kind of metal roof actually lasts in our climate, why the panel style matters more than the metal, and the maintenance that decides whether yours hits the high end or the low.
How long does a metal roof last in Texas?
The short answer is 30 to 70 years, and the panel style sets where you land. Standing seam systems, where the fasteners are hidden under the seams, are the long-life option at 50 to 70-plus years. Screw-down panels, where the fasteners go straight through the metal and are exposed to weather, run more like 20 to 30. The metal itself and the quality of the install move the number from there. Here’s the full breakdown.
| Roof type or style | Typical lifespan in Texas | Notes |
|---|---|---|
| Standing seam (concealed fastener) | 50 to 70+ yrs | Longest life, no exposed screws to fail |
| Metal shingles / tiles | 30 to 50 yrs | Traditional look, mid-range life |
| Screw-down / exposed fastener (R-panel, corrugated) | 20 to 30 yrs | Budget option, washers fail at 10 to 20 yrs |
| Steel (Galvalume or painted) | 40 to 60 yrs | Most common, needs a quality coating |
| Aluminum | 60 to 70+ yrs | Rust-proof, great in heat and humidity |
| Copper or zinc | 100+ yrs | Premium, lasts a lifetime |
| Asphalt shingle (for comparison) | 15 to 30 yrs | You’d replace it 2 to 3 times per metal roof |
Read that against an asphalt roof’s 15 to 30 years and the appeal is obvious: one good metal roof can outlast two or three shingle roofs.
Why do standing seam roofs last longer than screw-down?
It comes down to the fasteners, and this is the single biggest factor in metal-roof lifespan. On a standing seam roof, the panels lock together and the fasteners hide underneath, so nothing that holds the roof down is exposed to sun, rain, or thermal movement. That’s why these roofs run 50 to 70 years with little drama.
A screw-down roof is the opposite. The screws drive straight through the face of the panel, and each one has a small rubber (neoprene) washer to seal the hole. Those washers are the weak link. Texas heat and the daily expansion and contraction of the metal wear them out in about 10 to 20 years, and once they crack, every screw becomes a potential leak. A screw-down roof can still serve well, but plan on re-screwing or re-gasketing it partway through its life. That maintenance step is exactly what people forget when they’re surprised by a 22-year-old metal roof that’s leaking.
Does the type of metal change how long it lasts?
It does, mostly through how well it resists corrosion. Steel is the most common choice and lasts 40 to 60 years, but bare steel rusts, so it depends entirely on the coating. Galvalume, a steel core coated in zinc and aluminum, is the workhorse that holds up best, especially paired with a quality paint finish like Kynar that resists fading in our sun.
Aluminum is the step up for longevity, often 60 to 70-plus years, because it simply doesn’t rust, which makes it a strong pick in humid stretches of Texas. Copper and zinc are the premium tier and can last around a century, developing a protective patina that protects the metal for generations, though the price reflects it. For most San Antonio homes, a Galvalume steel standing seam or an aluminum roof hits the sweet spot of lifespan and cost.
What makes a metal roof wear out faster in Texas?
Installation quality is number one, ahead of the metal itself. A premium panel installed poorly, with the wrong fasteners, sloppy flashing, or no allowance for the metal to expand and contract, will fail long before a mid-grade panel installed right. This is the part that’s invisible from the ground and the reason the contractor matters as much as the material.
After install, the usual culprits are predictable. Exposed-fastener washers drying out and leaking. Sealant at the flashing, valleys, and penetrations aging out and needing renewal. Debris and standing water sitting against the metal and starting corrosion, especially where dissimilar metals touch. Our hail can dent panels, which is usually cosmetic on a structural standing seam but worth inspecting after a big storm. None of these are dramatic, and all of them are catchable with an annual roof inspection, which is what gets a metal roof to the top of its range instead of the bottom.
Is a metal roof worth the cost in Texas compared to shingles?
Over the life of the home, usually yes. A metal roof costs more up front than asphalt, no way around it. But asphalt shingles last 15 to 30 years here, so over the 50-plus years a good metal roof lasts, you’d buy and install two or three shingle roofs to cover the same span. Add in that metal reflects solar heat instead of soaking it up, which trims summer cooling bills, and the lifetime math tilts toward metal for anyone staying in the home a while.
The catch is the same one from earlier: that long lifespan assumes a quality panel, a proper install, and basic upkeep. A cheap screw-down roof slapped on without care doesn’t deliver the metal-roof economics people expect. If you’re going metal for the longevity, it’s worth doing it as a standing seam system from a crew that installs them regularly. That’s where the value actually lives.
Get a metal roof built to last from BH Roofing
A metal roof is one of the best long-term investments you can make on a San Antonio home, but only if the panel, the install, and the upkeep all line up. The difference between a 25-year roof and a 60-year roof is mostly decisions made before the first panel goes on.
BH Roofing installs and services metal roofing across San Antonio, from Galvalume and aluminum standing seam to metal shingles, and every roof replacement starts with a free 27-point inspection. Our team will walk you through which system fits your home and your timeline, and give you honest lifespan and cost numbers instead of a one-size pitch.
Call BH Roofing at (210) 267-9029 to talk through a metal roof or to have an existing one inspected before a small issue becomes a leak.
