Replacing Shingles With a Metal Roof: The Tennessee Conversion Guide

I

The Quick Answer: What Converting to Metal Costs and Involves

Cost, Scope, and Timeline in One Screen

In current 2026 pricing, replacing an asphalt shingle roof with metal in Middle Tennessee runs $800 to $950 per square installed for exposed fastener panel, $850 to $1,500 for stamped metal shingles, and $1,100 to $1,900 for standing seam, with a square meaning 100 square feet of roof surface. On a typical 2,000 square foot roof, that is about $16,000 to $19,000 for exposed fastener, $17,000 to $30,000 for metal shingles, and $22,000 to $38,000 for standing seam. Real 2026 examples from our records: a roughly 30 square home runs $33,000 to $48,000 in standing seam, and a large 45 square home runs $55,000 to $80,000. Every figure includes tear-off, disposal, a decking allowance, underlayment, flashings, and cleanup.

Full conversions across all systems and sizes ran $15,000 to $69,600 in our 2026 records: exposed fastener projects from $14,980 to $48,520 averaging about $27,000, standing seam from $22,600 to $69,575 averaging about $42,000. The scope matters as much as the price. A real conversion strips to the deck, repairs it, seals eaves and valleys with ice-and-water shield, lays high-temperature underlayment, corrects the ventilation, and fabricates every flashing new for metal. The sections below price and explain each piece.

Cost by the System

Exposed fastener panel: $800 to $950 per square, about $16,000 to $19,000 on a 2,000 square foot roof, 25 to 45 year life, best on simple rooflines and outbuildings. Stamped metal shingles: $850 to $1,500 per square, about $17,000 to $30,000, 40 to 60 years, the traditional look HOA streets approve. Standing seam: $1,100 to $1,900 per square, about $22,000 to $38,000, 50 to 70 years, the concealed-fastener benchmark. For the full system-by-system breakdown, our 2026 pricing guide covers every residential option.

What the Conversion Includes

Line by line, every written conversion estimate includes: tear-off and disposal of the old shingles (about $1 to $3 per square foot of the work), a decking repair allowance priced by the sheet, ice-and-water shield at eaves and valleys, high-temperature synthetic underlayment (about $0.75 to $1.50 per square foot), the metal system itself, custom-fabricated flashings, ridge ventilation, and full cleanup with a magnet sweep. If a competing bid is cheaper, find which of those lines it quietly dropped. A lower price for a smaller scope is not a lower price.

One thing we do not include: shortcuts. We never leave a home with exposed decking overnight, we never bury problems under new metal, and we never reuse flashings that were designed for shingles. Those three habits are most of the difference between a conversion that lasts 50 years and one that leaks in five.

Three questions decide most of your final number: which metal system you choose, how complex the roof geometry is, and what the deck looks like once the shingles come off. Everything else is detail.

II

Tear-Off vs. Roof-Over: The Question Everyone Asks

Can You Put Metal Over Shingles? Usually Yes. Should You? Usually No.

Metal over shingles is physically possible and sometimes code-legal, which is why plenty of contractors pitch it: skipping tear-off saves them a day of labor and a dumpster fee. Here is what the roof-over actually buys you. Trapped moisture between two roofs. Old shingle texture telegraphing through your new panels. Dead weight metal was supposed to remove. Every soft spot in the decking sealed away until it becomes a structural repair. And one more limit people forget: building codes generally cap a roof at two layers, and many older Middle Tennessee homes are already carrying two.

We recommend full tear-off on essentially every conversion, and after opening thousands of Tennessee shingle roofs we can tell you exactly why. We regularly find a second shingle layer hiding under the first. We find decking that went soft years ago at eaves and valleys. We find flashing failures the homeowner never knew about, still quietly wicking water. Tear-off costs about $1 to $3 per square foot, roughly $2,000 to $6,000 on a typical home, and it is the only step that lets us inspect and fix all of that before the next 50 years get built on top of it.

When a Roof-Over Is Even on the Table

The short list for even considering a roof-over: one clean existing shingle layer, a deck confirmed dry from inside the attic, simple geometry, and an owner who understands the trade. Before we would ever quote one, we get in the attic with a light and a moisture meter and walk the underside of the deck. No attic check, no roof-over conversation.

On barns, shops, and budget outbuildings, an over-frame system on purlins can be a defensible call, and we price it honestly when it fits. On a home you plan to keep, the math rarely survives contact with reality: saving $2,000 to $6,000 of tear-off, then finding trapped moisture or rot under brand-new panels, buys the most expensive repair sequence in residential roofing.

There is also a warranty angle. Our lifetime workmanship warranty covers roofs we build from the deck up, because that is the only assembly we can fully stand behind. A roof-over asks us to warrant work sitting on someone else's unknowns.

If a contractor recommends a roof-over without getting into your attic first, that tells you what the recommendation is really about. It is about their schedule, not your roof.

III

What Happens to Your Old Shingles

Tear-Off Day, Explained for Homeowners

Tear-off is loud, fast, and more organized than homeowners expect. The crew strips the shingles and old underlayment down to bare deck, section by section, never opening more roof than can be dried-in the same day. Tarps protect landscaping, a trailer or dumpster catches the debris, and the shingles leave your property for disposal the same week.

Then comes the part a roof-over skips: the inspection. Every square foot of exposed decking gets checked for soft spots, delamination, and rot. Bad sheets are replaced by the sheet, from your decking allowance, and photographed so you see exactly what was found and fixed.

The same day, the deck is dried-in: ice-and-water shield at eaves and valleys, high-temperature synthetic underlayment across the field. From that point your house is weatherproof even before a panel goes on, and we never leave decking exposed overnight.

Cleanup is daily, not just final. Debris is contained as it comes off, and the last step of the job is a magnet sweep of the lawn, beds, and driveway for nails. The most common compliment we hear after tear-off week is that the yard looked untouched.

If your roof has two shingle layers, and in Middle Tennessee many older homes do, tear-off is not optional at all. Codes limit layering, and a third roof over two is not a conversion, it is a liability.

IV

The Decking Underneath: The Honest Unknown

Why Every Real Conversion Quote Carries an Allowance

Nobody can see your decking until the shingles come off. That is why an honest conversion estimate carries a decking repair allowance instead of a guess: replacement sheathing priced per sheet, at published rates around $75 a sheet, approved by you before it goes in, documented with photos. A bid with no allowance line is either padded to hide it or planning a change order for later. Both cost you more than the honest version.

Most Tennessee decks come up cleaner than owners fear. Across our tear-offs the usual finds are a handful of soft sheets at eaves and valleys where shingle-era flashing failed, and rot rings around chimneys where old sealant gave up a decade ago. A few hundred dollars of sheathing under a roof with 40 to 70 years ahead of it is exactly the repair you want to catch on exactly the day it is cheapest to fix.

The deck also decides panel flatness. Metal shows what shingles hide, so we fix humps and dips while the deck is open. A flat deck is the difference between a standing seam roof that reads like glass and one that telegraphs every rafter.

V

Choosing the Metal System for a Former Shingle House

Three Systems, Three Answers to the Same Question

Standing seam is the conversion benchmark: concealed fasteners, panels that float on clips through Tennessee heat cycles, a 50 to 70 year expected life, and clean vertical lines that make a converted house read intentional rather than re-roofed. At $1,100 to $1,900 per square, a 2,000 square foot conversion lands around $22,000 to $38,000. If you plan to keep the house, this is usually the last roof you ever buy.

Stamped metal shingles are the streetscape answer: profiles that read as architectural shingles, shake, or slate from the curb, which keeps HOA boards comfortable and traditional blocks intact, with concealed fastening and a 40 to 60 year life. At $850 to $1,500 per square, a typical conversion runs $17,000 to $30,000. It is the conversion nobody notices happened, until the neighborhood re-roofs twice and your house does not.

Exposed fastener panel is the budget conversion: $800 to $950 per square, roughly $16,000 to $19,000 on a typical roof, 25 to 45 years depending on gauge and upkeep. It is at home on ranches, farmhouses, barns, and shops, and it carries the one honest string attached: a gasketed-screw check around years 10 to 15 that the concealed systems simply do not have. We explain that schedule plainly before you choose it, because a maintained exposed roof reaches 45 and a neglected one quits at 25.

Roof pitch, geometry, and visibility drive the choice as much as budget. Low-slope sections want mechanically seamed standing seam. Cut-up rooflines with dormers favor systems with forgiving details. A highly visible front slope deserves the panel you want to look at for decades.

Color and finish come last but matter for lifespan: PVDF (Kynar 500) finishes carry 30 to 40 year fade and chalk warranties, and our residential standard is 26 gauge steel with 24 gauge as a premium upgrade. Pick the finish for the decades, not the year.

Not sure which lane you are in? That is what the free assessment is for. We measure, look at pitch and geometry, and give you the honest fit, including when the budget system is genuinely the right call.

VI

The Real 2026 Conversion Numbers

What Middle Tennessee Homeowners Actually Paid

Here is the 50 year math, straight from our published comparison for a 2,000 square foot home. Staying on asphalt: about $10,000 at install, then the same roof again every 20 to 25 years at that decade's prices, totaling roughly $25,000 to $35,000 over 50 years, with two or three tear-offs and dumpster weeks along the way. Converting to metal shingles: about $16,000 to $20,000 total over the same window. Converting to standing seam: about $22,000, once. The lines cross around the second shingle roof, and everything after that is money asphalt takes and metal does not.

Those totals deliberately leave out two effects that both favor the conversion: reflective metal cutting summer cooling loads, and Class 4 impact ratings that some carriers recognize with premium credits. We keep them out of the math because they depend on your house and your insurer. Treat them as upside on top of a comparison metal already wins, not as promises baked into it.

Financing the Conversion

Most conversions are financed like any major home project. We offer financing on approved credit and put the numbers next to the estimate so you can compare cash, financed, or phased. Current financing runs 10.99 percent APR over 10 years, and a recent project on those terms came to $247.95 per month. Read that against the math above: a monthly payment on a never-again roof, versus writing the same five-figure shingle check twice more at future prices.

If storm damage is involved, insurance may cover the shingle-equivalent scope and you pay the documented difference to upgrade to metal, plus your deductible. We handle the claim documentation either way, and our insurance process page covers the details.

And beware the pitch moving the other direction: a conversion priced meaningfully below the ranges on this page is usually missing tear-off, underlayment, or the decking allowance, and sometimes all three. We repair those roofs later. The invoice for doing it twice always beats the quote for doing it once.

For per-square budgeting: exposed fastener $800 to $950, metal shingles $850 to $1,500, standing seam $1,100 to $1,900, installed. Every whole-house figure on this page is built from those same published schedules.

VII

What Changes at the House After the Metal Goes On

Weight, Heat, Sound, Storms, and Resale

Weight drops the day the shingles leave. A metal roof typically weighs about half of what the asphalt it replaces weighed, or less, so a conversion takes load off your framing rather than adding it. Heat drops with it: reflective metal can run more than 50F cooler at the surface than dark asphalt in the same sun, by Department of Energy figures, and with the ventilation corrected during conversion, homeowners see summer cooling loads fall, in some cases up to 25 percent.

Sound is the myth that will not die, so here is the scale. A whisper is about 30 dBA. Rain on asphalt shingles measures about 46. Rain on metal over a complete residential assembly, deck, underlayment, insulation, drywall, measures about 52. Normal conversation is 60. The drumming people remember is rain on bare panels over an open barn frame, which measures about 61 and has nothing in common with a house. Many converted owners tell us the new roof is quieter.

Storms and the Insurance Conversation

Your converted roof also meets Tennessee weather on different terms. Standing seam carries 140+ mph wind ratings in a region that sits inside Dixie Alley. Class 4 systems are tested under UL 2218 with a 2 inch steel ball dropped from 20 feet, no cracking allowed. The hailstorm that writes off every shingle roof on the street typically leaves metal with cosmetic dents at worst, which is why the week after a big storm is when our phones are loudest with conversion calls.

Some carriers recognize Class 4 documentation with premium credits. That depends on your carrier and policy, so we provide the product documentation and paperwork and you ask the question directly. It is upside to check, never a promise we make.

At resale, the roof flips from objection to asset. A shingle roof at year 18 is a buyer's negotiating lever. A metal roof with decades left removes the number one inspection objection and signals a house that was maintained by someone who thought long-term.

And the part nobody quantifies but every owner mentions: you stop thinking about the roof. No more counting shingle seasons, no more post-storm dread. That is what buying the last roof feels like.

VIII

The Conversion Timeline, Day by Day

Most Homes: 3 to 7 Business Days

Day one is tear-off and dry-in, the loud day: the dumpster lands early, the crew strips and inspects section by section, decking repairs happen on the spot, and by evening the roof is sealed under ice-and-water shield and high-temperature underlayment. Your house is weatherproof from the first night, every night.

Days two through five are the quiet, meticulous stretch: panels down, flashings fabricated and fitted at chimneys, walls, and valleys, trim run at eaves and rakes. The final day is ridge and details, full cleanup, the magnet sweep for nails, and the walkthrough where you get the photo set, the closed permit where one was required, and the lifetime workmanship warranty in writing. Most homes: 3 to 7 business days end to end. Large or cut-up roofs and weather windows stretch it, deck surprises add a day, and none of it changes the every-night-weatherproof rule.

Before the Crew Ever Arrives

The conversion actually starts weeks earlier: the on-site assessment, the written line-item estimate, system and color selection with PVDF samples in daylight, permits pulled where scope requires them, HOA submittals prepared if your neighborhood has a review board, and panels cut to your roof's exact run lengths before mobilization. By the time the trailer shows up, every avoidable surprise has been avoided.

Your job during the build is small: keep vehicles out of the driveway drop zone, expect tear-off day to be the loud one, and walk the finished roof photos with the foreman at the end. Most families are surprised how contained the week feels.

IX

Between Deck and Panel: The Assembly Upgrade

A Conversion Replaces the Whole System, Not Just the Surface

The quiet upgrade in every conversion is what goes where your old felt paper was. Ice-and-water shield seals eaves and valleys, the places Tennessee ice and wind-driven rain actually attack. High-temperature synthetic underlayment covers the field, built for the heat that metal panels see in July. Together they mean your house is protected by two layers, not one.

Ventilation gets engineered instead of inherited. Shingle-era attics are routinely under-vented, which cooks roofs from below and raises summer cooling bills. During a conversion we calculate balanced intake and ridge exhaust for your actual attic, not whatever the last roof happened to have.

Every flashing is fabricated new, for metal. Chimneys, walls, valleys, and skylights are where roofs actually leak, and flashings designed for shingles do not translate to metal panels. Reusing them is one of the most common fatal shortcuts in cheap conversions.

Fastening is engineered too: concealed clips on standing seam that let panels float through heat cycles, correct screw schedules where fasteners are exposed, and matched metals throughout so galvanic corrosion never gets a foothold.

None of this shows from the street. All of it decides whether your conversion reaches the far end of its 40 to 70 year range. It is also why the contractor question matters more than the panel brochure.

X

The Mistakes That Ruin Conversions

What We Fix After Other People's Shortcuts

A meaningful share of our 10,000+ repair records are other people's conversions, and the same five mistakes account for most of them. One: shingle crews installing metal like shingles, face-nailing panels that needed clips, no movement room, buckling by year three. Two: reused flashings. Three: skipped ventilation. Four: roof-overs on bad decks. Five: the wrong screws or mixed metals quietly corroding. What follows is what each one costs to unwind.

Reused flashings are the epidemic. The old shingle step flashing stays in the wall, new panels get caulked to it, and the caulk becomes the waterproofing. Caulk is a service item, not a system. When it ages, the wall leaks, and the repair typically runs $200 to $1,500 if it is caught early, or $1,500 to $5,000 once water has been in the wall a while. Fabricating the flashing correctly during the conversion costs a fraction of either number.

Skipped ventilation is the slow bleed. The conversion photographs beautifully, but the attic still cannot breathe, so summer heat cooks the assembly from below and the cooling bills never drop the way the salesman implied. Nobody connects the symptom to the roof for years. It is also the cheapest mistake to avoid: ventilation is calculated and corrected as a standard line in our scope, not an upsell.

The roof-over on a bad deck is the heartbreaker. Beautiful new metal, installed over rot that kept rotting, discovered only when a ceiling stains. By then the fix means pulling up finished panels, repairing structure, and rebuilding, easily several thousand dollars on top of what the tear-off would have cost on day one. We inherit a few of these every year. Nobody is happy on those roofs.

The defense is six questions, asked of every bidder including us. Is full tear-off included, in writing? Is decking carried as a per-sheet allowance I approve? Are all flashings fabricated new for metal? Is ventilation calculated, not copied? Is the underlayment high-temperature rated? And who is on my roof, employees who do metal daily or a sub who did shingles last week? Any bidder who stumbles on two of those just answered a bigger question for you.

XI

Do You Actually Need to Convert Yet?

The Honest Timing Question

If your shingle roof is 8 years old and healthy, keep it, and we will tell you exactly that at the assessment. Converting a roof with a decade of life left rarely pencils. Repairs outnumber replacements roughly ten to one in our records precisely because we send people home without new roofs all the time. The right answer at year 10 is usually a $500 repair, not a $30,000 conversion.

The conversion moment is when the shingle roof is at or near the end: 18 to 25 years old in Tennessee, curling, shedding granules into the gutters, leaking at flashings, or flagged by an insurance inspection. At that point a five-figure roof bill is coming no matter what you choose. The only live question is whether you buy the same 20 to 25 year roof again or end the cycle. That is why most of our conversions happen at exactly this moment.

Storm damage moves the moment up. If insurance is already funding a shingle-equivalent replacement, the upgrade math to metal is the difference plus deductible, which is the cheapest a conversion will ever be for you.

The One-More-Shingle-Roof Trap

Run the tempting middle path honestly before you take it. One more shingle roof today: about $10,000 on a typical home. The same roof again around year 22 at that decade's prices: call it $14,000 to $18,000 if roofing inflation stays polite. Two more tear-offs, two more weeks of crews, and at the end of it, around the year you are done paying, the house still needs a roof. The conversion you were deferring costs less than that sequence and outlives it. Someday usually means paying twice.

Someday usually means paying twice. If the roof is dying anyway, convert once and be done. If it is not dying, do not convert at all yet. There is no profitable in-between, and we will tell you which side of the line your roof is on in writing.

XII

Tennessee Specifics: Permits, HOAs, and Weather

The Local Details That Shape a Conversion

Permits: Metro Nashville treats repairs up to 33 percent of roof area as normal maintenance, and full conversions can move into permit territory depending on jurisdiction and scope. We confirm the path and pull what is required, in Metro and in every surrounding county we work. You never coordinate with a codes office yourself.

HOAs: converting the neighborhood's shingle look to metal is exactly what review boards exist to scrutinize, and it is a solved problem. Stamped metal shingles pass most boards because they read traditional from the street, and restrained standing seam profiles clear review in most communities with the right submittal. We prepare the packet, the samples, and the committee communication ourselves.

Weather: this region gives shingle roofs their 20 to 25 years the hard way, with 160F July surfaces, 49 inches of rain, Dixie Alley wind, and the occasional ice event. The same climate is the argument for converting once to a system rated for it, instead of renting another two decades from asphalt.

And the local advantage compounds quietly: because we are metal-only and have been since 2003, the crew on your conversion converted a shingle roof last week and will convert another one next week, in the same counties, under the same codes and review boards. The 10,000+ repairs in our records are also our syllabus. We have seen every way a Tennessee conversion goes wrong, which is exactly how yours goes right.

XIII

Shingle-to-Metal Conversion: Frequently Asked Questions

Straight Answers Before You Convert

How much does it cost to replace a shingle roof with metal in Tennessee?

$800 to $1,900 per square installed depending on the system: $800 to $950 for exposed fastener panel, $850 to $1,500 for metal shingles, $1,100 to $1,900 for standing seam. Full 2026 conversions in our records ran $15,000 to $69,600, with exposed fastener projects averaging about $27,000 and standing seam about $42,000, including tear-off, underlayment, flashings, and cleanup.

Can you put a metal roof over asphalt shingles?

Physically yes, and sometimes it is code-legal. We almost never recommend it. Layering traps moisture between roofs, telegraphs the old surface through the new panels, hides decking problems until they become structural, and can void portions of some warranties. Full tear-off costs about $1 to $3 per square foot of the project and buys a clean deck, a real inspection, and a roof that starts its 40 to 70 years right.

How long does a shingle-to-metal conversion take?

Most homes take 3 to 7 business days: tear-off and dry-in on day one, panels and flashings through the middle, details and cleanup at the end. Larger or complex roofs run longer, and deck repairs add time when tear-off finds them. Your house is weatherproof from the first evening, and we never leave decking exposed overnight.

Is a metal roof heavier than shingles?

No, the opposite. A metal roof typically weighs about half of what the asphalt shingles it replaces weighed, or less. Conversions remove load from your framing rather than adding it, which is also why metal goes onto older Tennessee homes without structural work.

Will converting to metal lower my cooling bills?

Usually, though the amount depends on the house. Reflective metal surfaces stay far cooler than dark asphalt, the Department of Energy cites reflective roofs running more than 50F cooler in the same conditions, and conversions also correct attic ventilation. Together, homeowners see summer cooling loads drop, in some cases up to 25 percent. Color, finish, insulation, and shade all play in.

Will a metal roof be loud when it rains compared to shingles?

No. Rain on asphalt shingles measures about 46 dBA and rain on metal over a complete residential assembly about 52 dBA, both quieter than normal conversation at 60. The loud metal roofs people remember are barns with panels over open framing. Over solid decking, underlayment, insulation, and drywall, the difference is undetectable, and many owners say metal is quieter.

Does homeowners insurance cover converting to metal?

Insurance pays for the storm-damaged shingle-equivalent scope your policy allows. If you upgrade to metal during the claim, you typically pay your deductible plus the documented difference between the covered shingle scope and the metal system. That claim moment is usually the cheapest a conversion will ever be, and we handle the documentation.

What happens to my old shingles?

They leave. The crew strips them to bare deck section by section, hauls them off for disposal the same week, inspects and repairs the decking, and dries the roof in the same day. Cleanup runs daily and ends with a magnet sweep of the yard and driveway for nails.

Do I need a permit to convert my roof in Nashville?

Often yes for a full conversion, depending on jurisdiction and scope. Metro Nashville treats roof repairs up to 33 percent of roof area as normal maintenance, and larger scopes can require permits. We confirm the path and pull whatever is required in Metro and the surrounding counties, so you never deal with a codes office.

Which metal system is best for replacing shingles?

Standing seam for the longest life and cleanest lines, 50 to 70 years with concealed fasteners. Stamped metal shingles when the house or the HOA wants the traditional look, 40 to 60 years. Exposed fastener panel for budget conversions on simpler rooflines, 25 to 45 years with a screw maintenance schedule. Pitch, geometry, visibility, and neighborhood decide as much as budget.

Is converting from shingles to metal worth it?

If your shingle roof is near the end, usually yes. An asphalt roof in Tennessee lasts 20 to 25 years, so staying on shingles means buying the same roof twice more over a 50 year window, each with its own tear-off, at future prices. One conversion ends the cycle, adds storm resistance and resale value, and comes with our lifetime workmanship warranty. If your shingles have years left, wait, and we will say so.