Professional Roof Installation in Arizona
Expert installation of tile, shingle, metal, and foam roofing systems for Arizona homes and businesses. Licensed ROC #358508. Call (602) 849-7990 for a free estimate.
New Roof Installation in Arizona: Materials, Code, Costs and What Happens on Install Day
A new roof is mostly hidden work. The tile or shingles you see from the street are the last layer. What decides whether the roof lasts in the Valley is what goes under them: the deck, the underlayment, the flashing and the ventilation.
This guide covers the parts of a new roof most homeowners never see, how to choose a material for a Phoenix-area home, what the building code requires, what a new roof costs, how permits and HOAs work, and how to check a roofer before you sign anything.
Three kinds of new-roof jobs
When people say they need a new roof, they usually mean one of three jobs. Knowing which one you need keeps you from paying for more roof than you have to.
- Tile underlayment replacement: the tile is still sound, so we lift and stack it, replace the underlayment and flashing, and lay the same tile back down. This is the most common large job on Valley tile homes.
- Full replacement in the same material: shingle for shingle, foam for foam, or tile for tile when the tile itself is broken, brittle or no longer made. Everything comes off down to the deck.
- A change of material: for example shingle to tile, or a worn flat section to a new foam system. This can affect the framing, the permit and your HOA, so it takes more planning.
What makes a roof last in Phoenix heat
The roofing material is rarely the first thing to fail here. Concrete tile can outlast the house. The layers under it are the weak point. Underlayment usually lasts 15 to 25 years in our climate, and roof-to-wall flashing, vent boots and sealants dry out on a similar or shorter schedule.
That is why we use high-temperature synthetic or self-adhered underlayment on new roofs. Older felt products get brittle in attic and deck temperatures they were never designed for. A better underlayment costs more up front and is the part that decides when you will need to call a roofer again.
Ventilation matters more than most people expect. A hot attic bakes the deck and underlayment from below while the sun bakes them from above. The residential code sets a minimum amount of vent area for an attic, generally 1 square foot of net free vent area for every 150 square feet of attic floor, or 1 for every 300 when the vents are split between high and low on the roof. When you get a bid for a new roof, ask whether your existing vents meet that, since a replacement is the easiest time to add vents.
Monsoon wind is the other test. Wind-driven rain gets under every tile roof. A new roof has to be built on the assumption that water will reach the underlayment, so laps, valleys and wall flashing are where the care goes.
Choosing a material for an Arizona home
Concrete tile is the most common roof on Valley homes built since the 1980s. It handles sun well and comes in flat, S and barrel profiles. It is heavy. Standard-weight concrete tile from a major manufacturer weighs roughly 900 to 970 pounds per 100 square feet, and lightweight versions roughly 550 to 720. A common architectural shingle weighs about 210 pounds over the same area. A house framed for shingles is not automatically able to carry tile.
Tile also has a minimum pitch. The building code allows clay and concrete tile on slopes of 2.5 inches of rise per foot or steeper, and requires two layers of underlayment on slopes below 4 in 12. Many ranch homes and additions in the Valley are close to that line, so we measure before recommending tile.
Asphalt shingles cost less and go on faster. The code allows them on slopes of 2 in 12 and steeper, with double underlayment below 4 in 12. We install cool-rated shingles, which reflect more sunlight than standard colors and help keep the attic cooler. Since the ENERGY STAR program for roofing ended in 2022, the way to compare products is the Cool Roof Rating Council label, which lists a product's solar reflectance and thermal emittance.
Foam is the usual choice for flat and very low-slope roofs. It is sprayed on as one seamless layer, can be built up to move water toward drains, and is finished with a reflective coating. That coating has to be renewed every several years, so plan for that cost when you choose foam.
Metal is a growing choice, especially standing-seam panels on modern and farmhouse-style homes. It is light, sheds water quickly and reflects heat well when it has a light or cool-rated finish. Metal prices vary a lot by panel type and gauge, so an estimator prices it after seeing the roof.
What goes into a new roof
Your written estimate should list each of these items. If a bid leaves them out, ask whether they are included.
- Tear-off to the deck, so the deck can be inspected instead of covered over
- Replacement of damaged or rotted deck boards, with the price per board or sheet stated up front
- High-temperature synthetic or self-adhered underlayment, doubled on low slopes where the code requires it
- New valley metal, roof-to-wall flashing and counterflashing, not reused pieces
- Drip edge at eaves and rakes, which the code requires on shingle roofs
- New pipe boots and roof jacks at every vent and penetration
- Attic ventilation checked against code, with any added vents listed
- Detach and reset of solar panels, when you have them
- Haul-away of old roofing and a magnet sweep for nails
How installation day works
Before work starts, move vehicles out of the driveway and garage, and cover or move anything you care about near the walls and the pool. It also helps to take pictures and fragile items off interior walls, since tear-off shakes the house.
On a replacement, the old roofing comes off down to the deck. On an underlayment job, the tile is lifted and stacked on the roof so it can go back in place. Either way, we then walk the bare deck, mark soft or damaged boards and replace them. We photograph the deck before it is covered, so you can see what was found and what was fixed.
Next comes the underlayment, then the flashing at valleys, walls, chimneys and skylights, then the roof covering. On tile roofs, if some original tile is broken or no longer made, we move original tile to the slopes you see from the street and put replacement tile where it won't show, so the color stays consistent.
When the roof is finished, the crew cleans up the work area. You get photos of the work, the warranty paperwork and a walk-through of anything we found that you should know about.
Scheduling around summer and monsoon season
Monsoon season runs June 15 to September 30. Storms can build in the afternoon with little warning, so an open roof is a risk during those months. A careful crew only tears off as much as it can cover with new underlayment the same day. Ask any roofer how they handle that before you sign.
Summer heat also affects the work itself. Some underlayments and sealants list temperature limits in their installation instructions, and long days on a hot roof are hard on any crew. If you have a choice, fall through spring is the easiest time to replace a roof here. If your roof is already leaking, it is better not to wait for cooler weather.
What a new roof costs
These are the typical ranges we see across the Valley. Shingle replacement runs about $8,000 to $15,000. Tile underlayment replacement runs about $10,000 to $22,000. Full tile replacement runs about $15,000 to $35,000. Foam roofs run about $4,000 to $18,000. Metal and commercial roofs are priced after an estimator inspects them.
Within those ranges, the price depends on the size of the roof, its pitch, the number of valleys and penetrations, how much deck needs replacing, how hard it is to reach, and whether there is solar to detach and reset. An estimator measures the roof and gives you a written price before any work starts. Financing is available, and the estimator can walk you through it.
One cost question comes up often. A new roof does not qualify for the federal energy efficiency home improvement tax credit. Roofing was dropped from that credit after 2022, and the credit itself ended for work placed in service after December 31, 2025. Be careful with any bid that promises a tax credit for a roof.
Switching from shingle to tile
Moving to tile is the change that needs the most homework. Because standard concrete tile weighs several times more than shingles, the existing rafters or trusses may need to be checked by an engineer and sometimes reinforced. Lightweight tile reduces the load but does not remove the question.
Most Valley cities also treat a change to a heavier material as work that needs a permit, even where a same-material reroof does not. Chandler, for example, requires an engineering letter when switching to concrete tile. Expect the permit and any structural review to add time before the crew can start.
Permits, HOAs and solar
There is no single permit rule for the whole state. Most Valley cities, including Phoenix, Mesa and Chandler, don't require a permit to replace a roof with the same material. Others, such as Queen Creek, require one for reroofing, and some, like Goodyear and Scottsdale, require one once deck boards or framing are replaced. Our city guides list each city's rule, and where the code is unclear, we confirm with the city before we start.
If you live in an HOA, keeping the same material and color is usually a quick approval. A new color, a new tile profile or a change of material usually needs written approval before work starts. We provide product sheets and color samples for your HOA.
If you have solar panels, they have to come off before the roof work and go back on after. We handle the detach and reset as part of the project, so you aren't coordinating two companies on the same roof.
Workmanship and manufacturer warranties
A new roof comes with two different warranties. Our 10-year workmanship warranty (25-year available) covers how the roof was installed. The manufacturer's warranty covers defects in the materials themselves. They are separate documents with separate terms, and you should get copies of both.
Manufacturer warranties usually depend on the roof being installed to the manufacturer's instructions, and some require the roof to be registered after installation. Keep your contract, the warranty papers and the photos from the job in one place. If you sell the house, check whether each warranty can transfer to the new owner.
Checking a roofer before you sign
Arizona gives homeowners some useful tools. Before you hire anyone, look up their license on the Arizona Registrar of Contractors website and check its status and complaint history. Our license is ROC #358508.
Under Arizona law, a contract over $1,000 between a contractor and a property owner has to be in writing. It must list the contractor's license number, a description of the work, an estimated completion date, the total price including taxes, any deposit, and the schedule of progress payments. It must also tell you, in bold type, that you can file a complaint with the Registrar of Contractors.
Hiring a licensed residential contractor also matters if something goes wrong. The state's Residential Contractors' Recovery Fund can pay eligible homeowners who live in the home as their primary residence, up to $30,000 per claimant, when a licensed contractor fails to finish or does faulty work. Unlicensed contractors are not covered.
- Get every price, inclusion and deck-board rate in writing
- Confirm the underlayment product by name, not just "new underlayment"
- Ask who pulls the permit, if one is needed, and who handles HOA paperwork
- Ask how the crew protects an open roof if a storm comes in
- Ask for photos of the deck before it is covered