We install both. Every week our crews are putting Owens Corning Duration shingles on one house and 24-gauge standing seam metal on the next, so we don't have a horse in this race. What we do have is 35 years of watching both kinds of roofs age in the same East Tennessee weather, and that's the perspective most comparison articles are missing.
Here's what actually matters when you're choosing between a metal roof and a shingle roof in Knoxville, Sevier County, Blount County, and the foothills of the Smokies.
The Short Version
- Architectural shingles cost less up front, look right on most homes, and last about 25 to 30 years here when they're installed correctly and ventilated properly.
- Standing seam metal costs roughly two to three times as much as shingles, lasts 40 to 50 years or more, and holds up better to wind, hail, and the tree debris that comes with living near the mountains.
- Screw-down metal (also called exposed-fastener metal) sits in between. The panels last a long time, but the fasteners need attention every 10 to 15 years.
If you plan to be in the house for a decade or less, shingles are usually the smart money. If this is the roof you want to put on once and stop thinking about, metal earns its price.
Cost: What You Pay Now
Shingles win on the first invoice, and it isn't close. On a typical East Tennessee home, a quality architectural shingle roof with synthetic underlayment, ice and water shield, and new flashing is the least expensive full replacement we sell.
Standing seam metal is a premium product. The panels are heavier gauge steel, they're formed to fit your roof, and installing them takes more skill and more time. Expect the quote to land somewhere between two and three times a comparable shingle roof, depending on how complex your roof is. Lots of valleys, dormers, and hips push the metal price up faster than they push the shingle price up.
Screw-down metal is the budget metal option. It's common on barns, shops, and a lot of cabins in Sevier County. It's less expensive than standing seam because the panels are thinner and they go on faster.
One thing we tell every customer: compare scopes, not just totals. A cheap shingle quote that skips ice and water shield or reuses old flashing isn't really cheaper. It's just smaller.
Lifespan: What You Pay Over Time
This is where the math changes.
Architectural shingles in our climate realistically give you 25 to 30 years. Our summers are humid, our winters swing above and below freezing, and the afternoon storms in July are hard on granules. A well-ventilated attic makes a real difference. We've torn off 15-year-old shingles that were cooked from the inside because the attic had no airflow, and we've torn off 30-year-old shingles that still had life in them.
Standing seam metal is a 40 to 50 year roof, and plenty go longer. The panels are 24-gauge steel with a factory-baked finish. There are no exposed screws to back out and no granules to shed. The seams are raised and mechanically locked, so water never touches a fastener.
Screw-down metal panels can last 30 to 40 years, but the neoprene washers under the screws break down long before that. In East Tennessee sun, plan on having the roof re-screwed or the fasteners replaced every 10 to 15 years. Skip that maintenance and the roof will start leaking at the screw heads, no matter how good the panels still look.
So over 50 years, a shingle roof gets replaced twice. A standing seam roof gets installed once. Whether that matters depends entirely on how long you plan to own the house.
Weather: Wind, Hail, and Trees
Living in the foothills means wind coming off the ridges, a hailstorm or two most springs, and trees. Lots of trees.
Standing seam metal handles all three better. Properly installed panels are rated for high winds, hail dents metal but rarely punctures it, and a limb that would tear open a shingle roof usually just leaves a mark on metal.
That said, modern architectural shingles are not fragile. Owens Corning Duration shingles use a reinforced nailing strip that holds up well in wind when the crew installs them with the manufacturer-specified nailing pattern. We've seen them ride out storms that took the shingles off the neighbor's house. The difference is usually the installation, not the product.
Where shingles do struggle is under constant tree cover. Shade keeps the roof damp, moss and algae move in, and debris piles up in the valleys. A metal roof sheds that debris and dries out faster.
Noise, Heat, and the Myths
"Metal roofs are loud in the rain." On a barn with no ceiling, yes. On a house with a roof deck, underlayment, attic insulation, and drywall between you and the panels, no. Our customers with metal roofs tell us they can't tell the difference from inside.
"Metal roofs make the house hotter." The opposite, actually. A light-colored or reflective metal finish bounces more heat than an asphalt shingle, which absorbs it. Most homeowners see a modest drop in summer cooling costs after switching to metal.
"Metal roofs attract lightning." They don't. Lightning hits the tallest object regardless of material. If it does strike, metal is non-combustible, which is a point in its favor.
"Shingles are outdated." Not even close. Architectural shingles are the most common roof in Knox County for good reason. They look right on a brick ranch, they come in dozens of colors, and a good installation with a strong warranty is a roof you won't worry about.
Looks and Resale Value
Both can look great. The question is what fits the house and the neighborhood.
Standing seam metal is the look for cabins, chalets, modern farmhouses, and anything with mountain views. On a short-term rental in Wears Valley or Gatlinburg, a metal roof photographs well and signals to guests that the property is well cared for.
Shingles are the look for most subdivision homes, brick ranches, and traditional two-stories. A metal roof on a house where every neighbor has shingles can look out of place, and buyers notice.
On resale, metal roofs generally recover more of their cost than shingle roofs do, because the buyer knows they won't be replacing it. But a new shingle roof with a transferable Owens Corning warranty is also a strong selling point. Either way, a new roof beats an old one at closing.
Warranties: Read the Fine Print
This matters more than most people think.
As an Owens Corning Platinum Preferred Contractor, we can register the Platinum Protection warranty on Duration shingle roofs. That covers materials and our workmanship for a term most contractors can't offer, and it's backed by the manufacturer, not just by us.
Standing seam metal comes with a paint finish warranty from the panel manufacturer, typically 30 to 40 years against chalking and fading, plus our workmanship warranty.
Screw-down metal panels carry a similar finish warranty, but the fasteners are a maintenance item and no warranty covers a screw that backed out in year 12.
How to Decide
Ask yourself three questions:
- How long will you own the house? Under 10 years, lean shingles. Over 20, lean metal.
- What does the house look like? Cabin or chalet, lean metal. Brick ranch in a subdivision, lean shingles.
- How much shade and tree debris is on the roof? Heavy tree cover favors metal.
If you land somewhere in the middle, screw-down metal is a fair compromise, as long as you go in knowing you'll need to have the fasteners checked every 10 to 15 years.
Frequently Asked Questions
How much more does a metal roof cost than shingles in East Tennessee?
Standing seam metal typically runs two to three times the cost of an architectural shingle roof on the same house. Screw-down metal lands in between. Roof complexity moves the metal price more than the shingle price, so a simple gable roof narrows the gap and a cut-up roof with lots of valleys widens it.
Can you put a metal roof over existing shingles?
Sometimes, but we don't recommend it. Layering over old shingles traps moisture, hides rotten decking, and adds weight. A full tear-off lets us inspect and replace bad decking, install new underlayment, and give you a roof we can stand behind.
How long does a screw-down metal roof last?
The panels can last 30 to 40 years. The fasteners are the weak point and need to be checked and replaced every 10 to 15 years. That maintenance is the difference between a screw-down roof that lasts and one that leaks.
Do metal roofs work on shingle-style homes?
Yes, and some homeowners love the look. But a metal roof on a traditional brick home in a shingle neighborhood is a design choice, not a default. We're happy to walk through color and profile options and show you photos of similar homes we've done.
Which one do you recommend?
Honestly, it depends on the house and how long you'll own it. We'll tell you straight when we come out. We've talked plenty of people out of metal and plenty of people out of shingles.
Get a Straight Answer from a Roofer Who Installs Both
Brian King Roofing has been installing shingle and metal roofs in East Tennessee since 1991. We're an Owens Corning Platinum Preferred Contractor, we're fully licensed and insured, and our shop is right here in Seymour. When we come out for an estimate, we'll measure the roof, look at your attic ventilation, and give you a written quote for the option that makes sense, or both if you want to compare.
Call us at 865-573-6859 or request your free estimate online. Trust the roof over your head.
