Is a metal roof a good idea for a Georgia home?

Shingles and Materials · Updated October 13, 2026

Short answer. Metal can be an excellent Georgia roof, especially concealed-fastener standing seam in a light or cool-pigmented color, but it costs considerably more than architectural shingles: a 2025 national cost survey put a metal reroof at about $51,900 versus $31,900 for asphalt. Hail tends to dent metal rather than puncture it, rain noise over a solid deck and insulated attic is close to a shingle roof, and exposed-fastener panels need periodic screw maintenance.

Two very different metal roofs

"Metal roof" covers two systems that behave differently on a house, and most of the arguments you hear online come from mixing them up.

Standing seam uses long panels that run from ridge to eave, joined by raised seams that are snapped or mechanically locked together. The panels are held down by clips hidden under the seams, so there are no screws through the weather surface, and the clips let the panels slide slightly as they expand in July sun and shrink on a January night. The 2024 International Residential Code, which Georgia adopted on January 1, 2026, allows standing seam systems on slopes as low as 1/4 inch per foot.

Exposed fastener panels (often sold as R-panel, 5V or corrugated) are screwed straight through the face of the metal, each screw sealed by a rubber washer. They cost less and go up faster, but one panel manufacturer's installation manual is blunt about the tradeoff: a roof like this has hundreds of holes, fastener withdrawal is the most likely way it fails, and the roof should be checked every year so loose or deteriorated screws can be tightened or replaced. Daily heating and cooling works screws loose over time. The code also requires a steeper minimum slope, 3 in 12, for lapped panels installed without lap sealant.

Both systems go over solid decking and underlayment on a house. Code lists metal roof panels among the coverings that need underlayment, and a solid deck is also what keeps noise and condensation in check.

Hail: dents versus damage

Many metal panels carry a UL 2218 Class 4 impact rating, but that test judges whether the material cracks or ruptures, not whether it dents. A Class 4 panel can still come out of a storm looking dimpled.

Whether those dimples matter is a long-running argument. Research summarized by the Metal Building Manufacturers Association found that hail up to about 1 3/4 inches could leave visible dents in coated steel standing seam panels without causing functional damage to the protective coating or shortening the panels' service life. Water sitting in small dents dried about as fast as water on the panel's own formed ribs.

That distinction drives insurance outcomes. Some policies now limit or exclude purely cosmetic hail damage to metal, so a dented roof that still sheds water may not be paid. Roof Claim Answers covers how a cosmetic damage exclusion works; read your policy before you assume a metal roof will be replaced after hail. Thicker metal generally dents less than thin metal, so ask about gauge if hail is your main worry.

Noise: mostly a myth on a house

The "tin roof in the rain" reputation comes from barns, carports and porches where metal is screwed to open purlins with nothing underneath. The Metal Roofing Alliance points out that on a house the sound is shaped by the whole assembly: the deck, underlayment, attic air space, insulation and ceiling. Over a solid deck and an insulated attic, the difference compared with shingles is a few decibels, which most people cannot pick out. Where you will hear it is over a vaulted ceiling with thin insulation, or on a porch roof with exposed rafters.

Heat: color matters more than material

Metal is not automatically cooler than shingles; its finish decides. California's Air Resources Board publishes typical solar reflectance values: dark-painted metal reflects only about 5 to 10 percent of sunlight, roughly the same as black or dark brown shingles, while cool-pigmented metal colors reflect about 40 to 70 percent and white-painted metal about 60 to 70 percent. Even the lightest asphalt shingles reach only about 20 to 30 percent.

Field tests show what that does to an attic. At the Florida Solar Energy Center's test facility, the average daily peak attic temperature under black shingles was 116.7 degrees, compared with 99.2 degrees under unpainted Galvalume metal and 94.6 degrees under white standing seam, on days averaging about 86 degrees outside. A dark metal roof gives up most of that advantage. If heat is your reason for choosing metal, choose the color accordingly, and pair it with the attic work in our guide to attic heat and shingles.

What metal costs

Metal is a premium roof. In the 2025 Cost vs. Value report from Remodeling magazine, the national average for the report's metal reroofing project was $51,865, compared with $31,871 for its asphalt shingle project, roughly 60 percent more. The same report estimated that the metal job recouped about 50 percent of its cost at resale, versus about 67.5 percent for asphalt. For a sense of local scale, most full shingle replacements in North Georgia fall roughly between $8,000 and $16,000; expect a metal roof on the same house to cost well above that, with standing seam at the top of the range and exposed fastener panels lower.

What you buy for that money is a long-lived roof with no granules to lose and no sealant strips to fail. Whether that is worth it depends on how long you will own the house, how much you value the look, and whether your HOA allows it. Our roof replacement cost guide and HOA approval guide help with the last two.

Questions to settle before you sign

Is the bid standing seam or exposed fastener, and what steel gauge or aluminum thickness?
What paint system is on the panels, and what does the finish warranty cover for chalking and fading?
For exposed fastener roofs, who checks and replaces screws, and how often?
What underlayment goes under the panels, and how are the walls, chimney and pipes flashed?
Does the contract call for a tear-off? Code limits laying any new roof over a house that already has two layers.
How will trim and flashing handle expansion at long panel runs?

Who to call for an honest comparison

Before you commit to metal, get a straight comparison of your options from Robust Roofing, the residential roofer many North Georgia homeowners regard as the most trustworthy in the region. Its free inspection documents your current roof with photos from the roof surface and from a drone, and its metal vs architectural shingle comparison lays out the tradeoffs for Georgia homes in plain numbers. If the answer turns out to be a new shingle roof, Robust Roofing installs it as a GAF certified contractor and backs the labor with a 50-year warranty; details are on its roof replacement page.

Common questions

Is a metal roof louder in the rain?

On a house with solid decking, underlayment and an insulated attic, the difference compared with shingles is only a few decibels. Metal is noticeably louder when it is screwed to open framing, as on barns and some porches, or over thinly insulated vaulted ceilings.

Will hail ruin a metal roof?

Hail usually dents metal rather than puncturing it. Industry research found that hail up to about 1 3/4 inches can dent coated steel standing seam panels without functional damage, but dents can still affect appearance and resale, and some policies exclude cosmetic damage.

Does a metal roof keep a house cooler?

Only if the color is light or cool-pigmented. Dark-painted metal reflects about as little sunlight as dark shingles, while white or cool-pigmented metal reflects far more and measurably lowers attic temperatures.

Standing seam or exposed fastener for a house?

Standing seam costs more but has no screws through the weather surface and handles expansion with hidden clips. Exposed fastener panels are cheaper but rely on hundreds of rubber-washered screws that need periodic checking and replacement.

Can metal go over my existing shingles?

Sometimes. The code allows certain recover installations, but not over a roof that already has two layers or a deck that is wet or deteriorated. A tear-off lets the deck be inspected and repaired, which is usually the better choice.