Residential Metal Roof Replacement in Ohio: Cost, Code and Warranty

A metal roof replacement in Columbus runs roughly $819 to $1,435 per square at standard grade, or about $20,500 to $35,900 for a 25-square roof, using the planning ranges from the estimator on this site. Most houses only need it once: a standing seam metal roof installed correctly lasts 40 to 70 years, two to three times an asphalt roof.

Reviewed September 2026 by a licensed Ohio general contractor.

When does a metal roof need to be replaced?

Metal roofs do not fail the way shingle roofs do. There is no granule loss and no blow-off after a storm. Most metal roof replacements in Ohio are one of two jobs: a failed exposed-fastener roof at 25 to 40 years old, or a shingle roof being changed to metal.

The signs an existing metal roof is finished:

• Fasteners backed out, loose or rusted. Gasket washers last 10 to 20 years, and once they harden every screw is a leak path. A screw-down roof has thousands.
• Coating failure. Bare metal at panel edges, cut ends and fasteners means the paint system is gone.
• Seam separation on a standing seam roof, usually from panels that were never allowed to move with temperature.
• Oil canning that has become distortion rather than waviness.
• Repeat leaks at several penetrations after re-sealing.
• Galvanic corrosion where dissimilar metals touch: copper flashing on steel panels, treated-lumber fasteners against aluminum.

One failing pipe boot or a row of loose screws is a repair, not a replacement. Replace when the system is failing, not when one part of it is. For how the layers work together, see how a residential metal roof works.

Replacing an existing standing-seam roof

A standing seam roof that is genuinely failing is uncommon, which changes how the job should be scoped. Work out which of these you have before anyone quotes a replacement.

What usually fails first

• Clips and thermal movement. Panels expand and contract with every hot afternoon. Fixed clips where floating clips belonged, or a long panel pinned at both ends, eventually tears or pops a seam.
• Seams that were never fully engaged. A mechanically seamed profile has to be rolled; a snap-lock profile walked and locked. A partly closed seam shows up years later as a line of leaks.
• Penetrations and end laps. Most leaks on a standing seam roof are at a pipe, a chimney or a curb, not in the field. Sealant in a curb detail is a maintenance item.

Repair, panel replacement or full tear-off

Single panels can be replaced when the profile is still manufactured and the seam can be unlocked without deforming its neighbors: realistic on a snap-lock roof, harder on a mechanically seamed one. The obstacle is matching, because profiles are proprietary and a 20-year-old roof often has no current match. A roll former can reproduce a panel width, not a discontinued seam.

Full replacement is the honest answer when the fastening pattern was wrong from the start, when the substrate is perforating, or when enough panels come off that the rest is not worth saving.

Standing seam tear-off is slower than shingle tear-off. Seams are unlocked or cut, panels come off in long pieces that have to be handled in the wind, and every clip has to be pulled before the deck can be inspected. The panels are recyclable and usually go to a scrap yard.

On the fastener question homeowners ask most often: Ohio code has no rule about removing and replacing individual rivets. R905.10 requires metal panel roofs to be installed per the manufacturer's installation instructions, so the fastener and sealant specification there is what an inspector holds the job to. Re-riveting a trim joint is maintenance and does not trigger a permit.

If you are weighing panel styles, standing seam, corrugated and metal shingle roofing in Columbus sets the three profiles side by side.

Can you install a metal roof over shingles in Ohio?

Sometimes, and the rule is narrower than the sales pitch. Section R908.3 of the 2019 Residential Code of Ohio bars a roof recover when the existing roof is water-soaked or too deteriorated to be an adequate base, when the covering is slate, clay, cement or asbestos-cement tile, or when the roof already carries two or more applications. That last one rules out most Columbus houses with an existing overlay.

Then comes the exception that metal sales teams quote:

Complete and separate roofing systems, such as standing-seam metal roof systems, that are designed to transmit the roof loads directly to the building's structural system and do not rely on existing roofs and roof coverings for support, shall not require the removal of existing roof coverings.

In plain terms, a standing seam system carried on its own purlins or battens, fastened through the old covering into the structure below, can legally go over shingles in Ohio. It does not rest on them; it bridges them.

Legal and advisable are different questions. A full tear-off is still the better job on a house:

• The deck is invisible until the old roof is off, and soft or delaminated sheathing has to be found eventually.
• Moisture trapped between the old shingles and the new panels has no way to dry out.
• Step flashing, chimney flashing and valley metal stay buried where nobody can inspect them.
• Under-vented attics, common on pre-1980s Columbus houses, cannot usually be corrected without a tear-off.
• Several panel manufacturers limit or exclude warranty coverage on retrofit-over-shingle work, which usually makes the saving pointless.

A recover does not remove the permit requirement either: Columbus and the surrounding jurisdictions permit layovers as well as tear-offs. What the inspector looks at is in the guide to Columbus roofing permits.

Standing seam vs. exposed fastener: the replacement decision

Panel type decides the cost, the service life and how much maintenance you are signing up for.

Standing seam

Long panels run eave to ridge on concealed clips, with raised interlocking seams, and nothing penetrates the weather surface. Twenty-four gauge is the practical minimum for a true standing seam panel; 26 gauge cannot span between clips without oil canning, so a quote for 26-gauge standing seam is either a mislabeled exposed-fastener panel or a cut specification. Service life is 50 years and up, and it prices at the standard to premium end of the table.

Exposed fastener (corrugated, ribbed, R-panel)

Screws go through the face of the panel into the deck or purlins, sealed by a rubber washer, in 26 or 29 gauge. Service life is 25 to 40 years, with fasteners re-sealed every 10 to 15 years and often replaced at 20. It prices at the economy end of the table and earns its place on garages, barns and outbuildings.

For most Columbus houses where the metal roof is meant to be the last roof, 24-gauge Galvalume with a PVDF finish is the specification that pays for itself over the full service life. If you are still choosing between materials, the shingle vs. metal comparison puts the two on the same terms.

Metal shingles in Columbus

Metal shingles are pressed steel or aluminum panels that interlock on four sides and are laid in courses rather than running full length to the ridge. Stone-coated steel is one version of the same idea. They sell in Columbus because they read as a conventional roof from the sidewalk while carrying a metal service life.

What to settle before you buy:

• Slope. Metal roof shingles need a minimum slope of 3:12 under R905.4.2, while standing seam panels are rated down to a quarter in twelve. On a low-pitch porch, metal shingles are not the product.
• Ice barrier. Ohio is a designated ice-dam region, and R905.1.2 requires an ice barrier under metal roof shingles from the eave edge to a point at least 24 inches inside the exterior wall line. A Columbus inspector checks it.
• Deck and underlayment. Metal shingles go over solid decking with underlayment, not over open purlins.
• Hail. Central Ohio gets hail most years. Some products carry a UL 2218 Class 4 impact rating; ask for it in writing, because it can matter to your insurer.
• Repairability. An interlocking shingle in the middle of a field is harder to swap than a panel at a roof edge. Ask how a damaged unit is replaced.

Columbus reviews exterior changes inside its historic districts through a certificate of appropriateness, so if your address sits in one, confirm the profile and color with Building and Zoning Services before you order. On cost, metal shingles sit inside the metal column below.

What metal roof replacement costs in Columbus

Every figure here comes from the same rate tables as the roof cost estimator on this site: planning ranges, not a price. A square is 100 square feet of roof surface; most Columbus houses are 18 to 35 squares.

Only the material and underlayment lines move with grade: economy 0.88, standard 1.00, premium 1.25. The square is then multiplied by pitch (1.00 at 4:12 and under, 1.12 at 5:12 to 8:12, 1.30 at 9:12 and above) and by height (1.00 one story, 1.08 two, 1.18 three or more). No job prices below $1,200.

Two worked examples show what the multipliers do. A 25-square roof at standard grade, moderate 5:12 to 8:12 pitch, one story: $22,900 to $40,200. At 30 squares, moderate pitch, two stories: $29,700 to $52,100.

What is included, and what is not

Every range above includes the six lines in the first table. Not included: replacing rotten decking, structural repair, ventilation upgrades, gutters, snow guards, replacing a skylight, and anything above the roof plane such as chimney masonry. Decking moves a metal job most often, because the deck has to hold clips or screws, so get the per-sheet price in writing before the tear-off starts.

Metal against shingle and flat

At standard grade on the same roof, shingle runs $369 to $655 per square and a flat membrane $499 to $885, against $819 to $1,435 for metal: on 25 squares, $9,225 to $16,375 against $20,475 to $35,875. What closes the gap is service life, since in Ohio a shingle roof is a 20 to 25 year purchase and a metal roof a 40 to 70 year one. For the other side, read the shingle roof replacement guide; for a porch or addition below 2:12, flat roof replacement.

Two Columbus factors worth budgeting for: snow guards, which belong on any metal roof above a walkway, a door or a gutter run, because metal sheds a whole snow load at once; and a UL 2218 Class 4 impact rating, which often earns a discount on the dwelling portion of a homeowner policy.

Metal roof warranties in Central Ohio: what a 40-year warranty actually covers

A 40-year metal roof is a finish warranty, not a promise about the roof. A metal roof carries three or four separate warranties from different parties, covering different failures. A quote that says 40-year warranty without naming which one is not telling you much.

The paint or finish warranty

This is what the 40-year number usually refers to. It covers the coating: film integrity (cracking, peeling, blistering) plus chalk and fade against a stated limit. A PVDF coating, sold under the Kynar 500 and Hylar names, carries the long terms; SMP warrants less. Both are usually prorated and cover material only, not the labor to refinish a roof.

The substrate warranty

Separate from the paint, this covers the metal itself against rupture, perforation and corrosion. On Galvalume steel it is tied to the coating weight, AZ50 or AZ55, and the term is normally shorter than the finish warranty. It generally excludes the cut edges of panels, where corrosion actually starts, and anything touching dissimilar metals.

The workmanship warranty

The installer's own guarantee, and the one you are most likely to need, because most metal roof problems are installation problems: clips that cannot move, seams not fully engaged, a curb sealed rather than flashed. Terms in Central Ohio run from one year to 25, and a long one is only worth the years the company stays in business.

Weathertightness warranties

A weathertightness or no-dollar-limit warranty is the manufacturer standing behind the roof not leaking. These are underwritten rather than handed out: certified installer, approved details, shop drawings, a manufacturer inspection. Mostly a commercial product. The published warranty documents name the type.

Transfers, exclusions, and exposed-fastener roofs

On a screw-down roof the washers are the weak point, typically excluded or warranted for a far shorter term than the panel. A 40-year finish warranty on a roof whose fasteners need re-sealing at 15 years is accurate and still misleading.

Most metal finish warranties transfer once, to the first buyer, inside a window measured from the installation date, sometimes with a fee. Register the roof when it goes on and keep the paperwork with the permit and invoice.

The usual exclusions: contact with a dissimilar metal, incompatible sealants, runoff from copper onto steel, foot-traffic damage, an unvented attic, standing water, installation that departs from the manufacturer's instructions, and the wrong cleaning products. Retrofit over an existing roof is on several of those lists.

Ask in writing for: the coating type and AZ designation, the finish term and whether it is prorated, the substrate and workmanship terms, who registers the roof, and whether the installer is certified by the panel manufacturer.

The replacement process, step by step

A residential standing seam tear-off and replacement in Columbus usually takes three to five working days; an exposed-fastener roof takes two to three.

1. Measurement. Panels are cut to length, so every plane and penetration is measured and documented before anything is ordered. A re-order of mis-cut panels costs days.
2. A line-item estimate. Panels, clips, fasteners, trim, flashing, underlayment and labor listed separately, because trim and flashing add a substantial share on top of the panel cost.
3. Permit. The contractor pulls it, not you. An unpermitted reroof surfaces when you sell, and several manufacturers require a permitted installation.
4. Panel fabrication or delivery. Short runs arrive pre-formed; long runs are often roll-formed on site so there is no splice joint mid-slope.
5. Tear-off, down to the deck, including the old underlayment, flashing and pipe boots.
6. Deck inspection and repair. Any decking that is soft or delaminated is replaced now, because panels transfer their load through clips and screws into it.
7. High-temperature underlayment. Metal runs hotter than shingles. Ice and water shield and the field underlayment both have to be rated for it; standard felt under metal is a specification error.
8. Eave, rake and valley trim, which go on before the panels, in the order the water runs.
9. Panels and seaming. Clips set so the panels can move, panels engaged, seams rolled or snapped depending on the profile.
10. Penetrations, ridge and final trim, then cleanup, a magnet sweep and the final inspection.

The contractor should check attic ventilation at the same time. A metal roof over an unvented attic traps the same moisture a shingle roof would, and it is cheaper to fix while the deck is open.

Choosing a metal roofing contractor in Ohio

Asphalt shingle work and metal panel work are different trades. A crew that is excellent on shingles can be mediocre on standing seam, and the errors do not show for years. Before you sign:

• Metal work you can go and look at. Three recent installations with addresses you can drive past.
• Manufacturer certification. Certified installers can offer warranty coverage that uncertified ones cannot.
• Local registration. Ohio has no statewide residential roofing license; registration is by city or county and the permit process verifies it.
• Insurance. General liability and workers' compensation, confirmed with the carrier, not from a photocopy.
• The right equipment. Standing seam needs seamers, a brake and, on long runs, a roll former. A contractor without them is buying pre-cut panels or subcontracting.
• A written scope naming gauge, coating, manufacturer, clip type, trim package, warranty terms, payment schedule and dates.
• A small deposit, enough to order material. A large payment up front is a red flag.

Get three estimates written to the same scope, or you are comparing nothing. An estimate far below the others is usually a thinner gauge, SMP in place of PVDF, a lighter trim package or reused flashing.

What to expect after the work is done

When the job closes out you should have the final inspection signed off, the manufacturer warranty documents registered in your name, a workmanship warranty in writing, and a file holding the permit, the invoice and the material specification (gauge, coating, color code).

In the first heavy rain, listen. A metal roof over a solid deck and an insulated ceiling is not noticeably louder than a shingle roof. If yours is, the problem is the insulation, not the roof.

In the first year, watch for fasteners backing out, seam separation or oil canning that was not there at installation, condensation in the attic (a ventilation problem, not a leak), and water at penetrations, where almost all metal roof leaks start. Anything in the first year is a workmanship item the installer should fix at no charge.

After that a metal roof asks for very little: keep the valleys and gutters clear, keep dissimilar metals off the panels, and look at the coating every few years.

What to do next

Take the square count off a previous invoice or measure the roof, then put it through the roof cost estimator with your own pitch and story count. Read the guide to Columbus roofing permits so you know what your contractor files. If metal is still competing with asphalt, the shingle vs. metal comparison covers the other side. And if the roof is part of a larger renovation, check whether your address qualifies for a Columbus CRA tax abatement.

Informational, and current at the time of publication. Ohio jurisdictions adopt local amendments; verify current code with your building department before starting work.