Considering a metal roof? Get matched with up to 3 licensed, insured local roofers who install standing seam and exposed-fastener systems, and compare their quotes at no cost.
Prefer to talk? Call or text Ben Arp at (423) 920-4333
Takes less than 60 seconds
A metal roof is a long-term decision. InterNACHI's life-expectancy chart puts metal roofing at 40 to 80 years, compared with roughly 20 to 30 for asphalt shingles, and the price reflects that. With spring hail, summer thunderstorm winds and humid summers in the Knoxville area, it's worth weighing metal against architectural shingles when your current roof wears out. This page compares standing seam and exposed-fastener systems, lists what 2026 cost guides report, and covers what to ask an installer.
Standing seam panels run from ridge to eave with raised seams that lock or snap together, and they're held down by clips or fasteners concealed under the seam. No screws pierce the face of the roof. The clips let panels expand and contract with temperature, which matters on a roof that swings between freezing winter nights and hot summer afternoons.
Exposed-fastener panels, often called screw-down, ribbed or corrugated panels, are fastened through the face with screws that carry rubber washers. They cost less to buy and install, but every screw is a potential leak point. Over the years washers can break down and screws can back out, so plan on periodic inspection and refastening.
A third option, metal shingles or shakes, is stamped to resemble asphalt, slate or wood while keeping the durability of metal. HomeAdvisor lists them at $7 to $22 per square foot installed. They can suit a street or homeowners association where a panel look would stand out.
Guides published in 2026 give wide ranges because metal type, gauge, panel profile and roof complexity all move the price. Modernize's Tennessee guide reports $9 to $18 per square foot installed for most metal systems in the state, and $22,000 to $40,000 to put standing seam on a 2,000 square foot roof. Exposed-fastener panels come in lower; Roof Observations' 2026 steel guide puts them around $8.25 per square foot installed on average, versus about $12.75 for standing seam steel.
Steep pitches, multiple valleys and dormers, skylights and chimneys all add labor and trim pieces. The same panel can cost noticeably more on a complicated roof than on a simple gable.
National figures run even wider. HomeAdvisor's June 2026 data lists standing seam at $7 to $30 per square foot and corrugated sheets at $3.50 to $15. Ranges that broad are a reminder to compare quotes on the same panel, gauge and finish rather than on price per square alone.
Hail can dent metal panels. Some homeowners policies treat dents on metal as cosmetic and limit coverage for them, so ask your agent how your policy handles it before you choose a panel. Heavier-gauge metal resists denting better than thinner panels.
Moisture is the other consideration. Knoxville's average morning relative humidity runs around 85 percent, and condensation can form on the underside of metal panels when warm, damp air meets a cold surface. A suitable underlayment and good attic ventilation are part of a sound metal installation, not optional extras.
Ask whether panels will go over solid decking with underlayment or over purlins, what gauge and paint system are being quoted, and whether the finish carries its own warranty against fading and chalking. On standing seam, ask whether panels are roll-formed on site or delivered pre-cut, and how long runs are allowed to move.
Trim and flashing are where metal roofs succeed or fail. Ridge caps, valleys, eave and rake trim, pipe boots and chimney flashing should be designed for the specific panel system. A crew that's excellent with shingles may have less experience with metal, so ask how many metal roofs they've installed and request addresses you can drive past.
Make sure each quote names the panel profile, metal (steel or aluminum), gauge, finish system and color, along with the underlayment, fastener type and trim package. Two quotes that both say standing seam can describe very different products.
Licensing still applies. At the standing seam prices in Modernize's Tennessee guide, many full installations will reach $25,000, the point where Tennessee requires a state contractor's license. Below that, residential metal roofing jobs in Knox County from $3,000 to $24,999 fall under the state Home Improvement license.
Installed metal roofing costs reported in 2026 guides. Rough ranges, not quotes.
| Metal roof type | Installed cost | Source |
|---|---|---|
| Exposed-fastener / corrugated panels | $4–$14 per sq ft (national) | Modernize |
| Exposed-fastener steel, average | About $8.25 per sq ft | Roof Observations |
| Standing seam | $10–$16 per sq ft (national) | Modernize |
| Standing seam steel, average | About $12.75 per sq ft | Roof Observations |
| Metal shingles | $7–$22 per sq ft (national) | HomeAdvisor |
| Most metal systems in Tennessee | $9–$18 per sq ft | Modernize Tennessee guide |
| Standing seam on a 2,000 sq ft roof in Tennessee | $22,000–$40,000 total | Modernize Tennessee guide |
Rough ranges for planning only. Every roof is different, which is why comparing written quotes matters.
Estimate your roof in 30 secondsInterNACHI's life-expectancy chart estimates 40 to 80 years for metal roofing, and HomeAdvisor cites 40 to 70 years for a well-installed metal roof. Actual life depends on the metal, the paint system, installation quality and upkeep. Exposed-fastener roofs need their screws and washers checked over time, while standing seam systems need less routine attention.
Yes, at the start. Modernize's 2026 Tennessee guide lists architectural shingles at $5 to $10.50 per square foot installed and most metal systems at $9 to $18. Over the life of the house the comparison narrows, because a metal roof can outlast two or more shingle roofs. How long you plan to stay in the home is a big part of the math.
Some installers will put metal over one layer of shingles where codes and the panel manufacturer allow it, often with battens or an added underlayment layer, while others insist on a tear-off. Ask each installer which method they're quoting, how it affects ventilation, and what the manufacturer requires to keep the warranty valid.
Standing seam costs more but has no exposed screws and allows the panels to move with temperature changes, which reduces long-term maintenance. Exposed-fastener panels are the budget option and can work well on simpler roofs if you're prepared to inspect and replace fasteners over time. Get both priced for your roof before deciding.
Yes. Homeowners never pay us anything. Roofing contractors in our network pay a referral fee, and you are under no obligation to hire any of them.
Tell us about your roof once and get up to 3 free quotes from licensed local roofers. No cost, no obligation.
Roofers usually reach out within 24-48 hours
