Metal Roofing for Arizona Homes

Standing seam and metal tile roofing systems. Energy-efficient, reduces cooling costs, 50+ year lifespan. Licensed ROC #358508. Call (602) 849-7990.

Metal Roofing in Arizona: Panel Choices, Heat, Solar, Repairs and What to Ask Before You Switch

A metal roof behaves differently from tile or shingle. It moves with the heat every day, it is held down by clips or screws instead of its own weight, and most leaks come from a few small parts, not from the metal. Knowing how those parts work helps you pick the right system and keep it watertight.

This guide goes past the panel list above. It covers how metal roofs wear in the Valley, which system fits which roof, what changes when you switch from tile or shingle, how metal works with solar, what repairs look like, and how we price and plan the job.

What we install and repair

Most of our metal work falls into a few groups:

  • Full replacements where a home switches from shingle or tile to standing seam metal
  • Metal roofs on additions, casitas, patio covers, carports and workshops
  • Fastener replacement on older screw-down (exposed fastener) roofs
  • Resealing or replacing ridge caps, rake and eave trim, and wall flashing
  • Replacing dented, rusted or cut panels
  • Flashing around vents, skylights, AC stands and solar mounts on metal roofs
  • Storm damage from monsoon wind and debris

How metal roofs wear in the Phoenix heat

Metal grows when it heats up and shrinks when it cools. Steel changes length by about 0.0000067 inch per inch for every degree Fahrenheit. That sounds tiny, but a 30-foot panel that swings 100 degrees between a winter night and a summer afternoon changes length by about a quarter inch. Every part of the roof has to allow for that movement, every day, for decades.

On standing seam roofs, the panels are held by clips hidden in the seams. On long runs, the clips are made to let the panel slide. If the wrong clips are used, or panels are pinned at both ends, the movement has nowhere to go. That shows up as noise, stress at the ends of panels, and pulled trim.

On exposed fastener roofs, the screws go straight through the panel. Each day of expansion works on those holes. Over the years, the holes can wear oval, screws back out, and the rubber washers under the screw heads dry out in the sun. Screws that were driven too tight crush the washer. Screws left too loose never seal. Either way, the leak starts at the screw.

Sealant is the other weak spot. Trim laps, ridge closures and wall flashing rely on sealant that hardens in our heat. Monsoon wind, which comes between June 15 and September 30, then pushes rain sideways into any joint that has opened up.

A few problems are specific to metal:

  • Rust spots from metal shavings left on the roof after drilling or cutting. The shavings are bare steel, and they can stain the finish within days.
  • Corrosion where Galvalume steel touches copper, lead, or wet mortar or stucco. This matters at stucco parapets and walls and around old lead vent flashings.
  • Condensation on the underside of the panels when warm, moist air meets cold metal, which is why metal needs a proper underlayment.
  • Waviness in flat areas of the panels, called oil canning. The Metal Construction Association treats it as cosmetic, not a defect, and it does not affect how the roof keeps water out.

Choosing a system for your roof

Pitch decides a lot. The International Residential Code, the model code Valley cities build their codes from, allows standing seam metal down to a quarter inch of rise per foot. Lapped, screw-down panels need at least 3 inches per foot, or half an inch per foot if sealant is used in the laps. Manufacturers often set their own minimums above code. Low-slope sections, common over Valley carports and patios, usually point toward standing seam or a different roof type.

Standing seam is the usual choice for a home's main roof. There are no screws through the flat of the panel, the clips allow movement, and the seams make a clean base for solar mounts. Exposed fastener panels such as R-panel and corrugated cost less and work well on workshops, barns and patio covers, but plan on checking the screws on a schedule. Stamped metal shingles and tile-look panels are another option where an HOA wants the look of tile or shake.

The finish matters as much as the steel. Galvalume is a coating of 55% aluminum, 43.4% zinc and 1.6% silicon that protects the steel from rust. On top of that, painted panels get a finish. Finishes made with 70% PVDF resin, such as Kynar 500, are made to hold color and resist chalking in strong sun. When you compare quotes, ask what finish each one uses and what the paint warranty covers.

For heat, look up the product in the Cool Roof Rating Council directory. It lists solar reflectance and thermal emittance for each color, both new and after three years outdoors. The three-year number is the one to compare, since dust and weather lower it. Lighter colors reflect more heat. The ENERGY STAR program for roof products ended in 2022, so no roof product carries that label now.

Switching from tile or shingle to metal

Metal is light. A steel standing seam roof weighs roughly 1 to 3 pounds per square foot. Standard concrete tile weighs about 9.5 to 12. Going from tile to metal takes weight off the framing, which is the opposite of the shingle-to-tile change that cities watch most closely.

We tear off the old roof down to the deck on every replacement. Building code doesn't allow a new roof over concrete or clay tile anyway, or over a roof that already has two layers or is water-damaged. Tearing off also lets us see the deck. Soft or broken boards get replaced before anything new goes on.

A change of material can change other parts of the house. Tile roofs often have different edge details, bird stops and wall flashing than metal needs, so the trim and the flashing at walls and chimneys are redone as part of the job. Vents, skylights and AC stands all need new flashing made for metal.

Switching to metal is a change of roofing type, and several Valley cities require a permit for that. HOAs often have rules too. Some communities require a matte finish on metal, and some historic districts don't allow metal on the main roof at all. We check both before you pick a color.

Metal roofs and solar

Standing seam roofs pair well with solar. Clamps made for standing seam, such as those from S-5!, grip the raised seam with set screws, so panels can be mounted without drilling holes through the roof. Fewer holes means fewer places to leak.

If you already have solar and are replacing your roof, we detach the panels, replace the roof, and reset them. It is worth planning the new roof and the solar layout together, so the seams line up with where the mounts need to go.

Repairs on existing metal roofs

On screw-down roofs, the most common fix is replacing worn fasteners. A screw that has worn its hole oval often needs a slightly larger replacement to bite and seal again. A new screw and washer lasts far longer than sealant smeared over an old screw head.

On standing seam roofs, leaks usually come from trim, ridge closures, flashing at walls, or pipe and vent flashing. We reseal or replace those parts. A panel that is cut, rusted through or badly dented is replaced, not patched. Scratches in the finish should be touched up with matching paint so the steel underneath stays covered.

After a hailstorm, we photograph and document the roof and can meet your adjuster. Be aware that some policies have a cosmetic damage exclusion for metal roofs, which leaves out dents that don't affect how the roof sheds water. What your policy covers, and whether a claim is paid, is up to your insurance company.

For screw-down roofs, a quick check of the fasteners about twice a year, and after big monsoon storms, catches most problems before they leak.

What a metal roof costs

Repairs to metal roofs fall in the same range as our other repairs, usually $300 to $5,000. Replacing a few screws or resealing a ridge is at the low end. Replacing several panels with trim and flashing is at the high end.

A new metal roof is priced after an estimator inspects the roof. The price depends on the roof's size and pitch, the panel system and finish you choose, how many valleys, hips and penetrations there are, how much trim and flashing has to change, the condition of the deck once the old roof is off, and whether solar has to be detached and reset. You get a written price before work starts. Financing is available.

On taxes: roofs were dropped from the federal energy-efficient home improvement credit starting in 2023, and that credit ended entirely for anything placed in service after December 31, 2025. A tax professional can tell you whether anything applies to your situation.

Repair or replace a metal roof?

A well-built metal roof can often be kept going with fastener and trim work. Replacement starts to make sense when the problems are spread across the roof:

  • Rust that has gone through the panels in several places, not just surface staining
  • Screw holes worn out across large areas of a screw-down roof
  • Leaks coming back in different spots after repeated repairs
  • Soft deck or water damage showing in the attic in more than one area
  • Panels that were never right for the pitch, such as lapped panels on a very low slope
  • A worn-out roof under solar panels that will need to come off anyway

How a metal roof project runs

An estimator inspects the roof and attic, measures, checks the pitch on each section, and photographs what's there. You get a written price that names the panel system, finish and color, and spells out what trim and flashing will be replaced.

Before work starts, we confirm whether your city needs a permit and whether your HOA has to approve the color and finish. Panels and trim are then ordered to your roof's measurements.

On install days, the crew tears the old roof off to the deck, replaces damaged boards, and puts down a high-temperature synthetic or self-adhered underlayment. Then come the eave and valley flashing, the panels, and the ridge, rake and wall trim. Metal shavings should be swept off the roof at the end of each day so they can't rust onto the finish.

When the roof is finished, we send photos of the work. Your roof is covered by our 10-year workmanship warranty (25-year available), along with whatever the panel and paint manufacturers provide.

Permits and HOAs

There is no single rule across the Valley. Most cities don't require a permit for repairs or for replacing a roof with the same material, but switching to metal is a change of material, and cities like Phoenix, Chandler and Peoria treat that differently from a like-for-like reroof. Some cities also require a permit when deck boards are replaced. Each of our city guides explains the local rule, and where a city's code is unclear, we ask the city before work starts.

In an HOA, plan on review for any change from tile or shingle to metal. Bring the panel profile, color name and finish type. We can supply product sheets and samples for the submission.

Where We Work

Guides and cost breakdowns