Circle G Roofing is a family run roofing company with its office in Scottsdale. We have been roofing in the Valley for more than 20 years. Spray foam roofing is our specialty, and we also work on coated roofs, tile, flat roofs and asphalt shingles. This page is the overview: every roof system we work on, how a job runs with us, and how roofing changes from one end of Scottsdale to the other.
The company in brief
Family run, based in Scottsdale, licensed, bonded and insured. Our specialty is spray foam roofing. We also do polyurea and silicone roof coatings, tile roof repair and installation, flat roofing, roof waterproofing, asphalt roofing, deck waterproofing and weather sealing, and emergency leak repair around the clock. Every job starts with a free inspection and a written fixed price.
Call us and tell us what kind of roof you have and what you have noticed. We will arrange a free inspection.
The roof systems we work on
| Roof system | What we do | Where it is found in Scottsdale |
|---|---|---|
| Spray foam | New foam, spot repairs, recoats and full foam roof makeovers | Flat and low-slope roofs. The City’s re-roofing guide says foam is replacing rolled roofing in most flat roof systems |
| Roof coatings | Silicone and polyurea elastomeric coatings over foam and other sound flat roofs | Any coated flat roof, patio roof or porch roof |
| Clay and concrete tile | Tile replacement, underlayment relay, flashing and valley repair, new tile installation | The City’s guide says tile became the roofing material of choice in the 1990s |
| Asphalt shingles | Repair, tear-off and new shingle roofs | Sloped roofs on older homes. The City’s guide says shingles were used almost exclusively until the 1990s |
| Flat roofing and waterproofing | Flat roof repair, roof waterproofing, deck waterproofing and weather sealing | Flat roofs and decks |
Each of these has its own page on this site or its own section below. If you already know what you need, the table near the end of this page points to the right one.
The same City guide sorts roofs by slope. A high slope roof rises more than 5 inches for each 12 inches of run, a low slope roof rises 2 to 5 inches, and a flat roof rises less than 2. Flat is a manner of speaking: the guide says a flat roof still keeps a minimum slope of a quarter inch per foot so that it drains.
Spray foam roofing, our specialty
A spray foam roof is polyurethane foam sprayed as one continuous insulating layer over the roof and sealed with a reflective coating. There are no seams in the open roof for water to find. The foam insulates, the coating reflects the sun and sheds monsoon rain, and the roof is renewed by recoating, not by tearing it off.
The part that wears is the coating. In the Valley a foam roof should be recoated about every 10 to 15 years. A roof recoated on time can go on for decades. A roof left too long needs wet foam cut out and rebuilt before it can be coated again. Our full foam roof makeover covers that work: a power wash, removal of old and damaged foam, new foam in the low areas and an elastomeric recoat. Full foam roof makeovers carry a 5-year warranty, and that warranty is for full foam roof makeovers only.
Coatings and waterproofing
We apply two main coatings. Silicone is the usual choice for a flat roof that holds water, because it cures into a surface that water can sit on without softening it. Polyurea elastomeric coating cures fast, builds thickness in one pass and stretches instead of splitting, which suits roofs that move, take foot traffic or cannot be out of service for long. Both go on only after the roof has been washed, dried and repaired. A coating is only as sound as what it is bonded to.
We also do roof waterproofing, deck waterproofing and weather sealing, and we coat porch and patio roofs. Polyurea is the coating we reach for where a surface moves or gets walked on.
Tile and asphalt roofs
On a tile roof the tile is the shell and the underlayment beneath it keeps the water out. In Scottsdale heat the underlayment gives out after about 13 to 16 years, long before the tile. We replace cracked and slipped tiles, relay tile over new underlayment, repair valleys and flashing, and install new clay and concrete tile roofs.
On asphalt shingle roofs we replace lifted, cracked and missing shingles, reseal flashing, and strip and re-roof when the shingles are brittle across the surface. Our roofer Scottsdale AZ page covers repairs in detail, and roof replacement Scottsdale AZ covers relays, tear-offs and makeovers.
One city, three kinds of roofing
Scottsdale is long. The City measures it at 184.5 square miles, stretching 31 miles from north to south, with elevations from 1,150 feet to 4,877 feet. A roofing company that works the whole city meets different roofs and different rules at each end.
South Scottsdale and Old Town
The southern end is the oldest. Scottsdale was incorporated in 1951, and the City counts four historic districts, all of them postwar neighborhoods: Village Grove and Town and Country Scottsdale, which it describes as 1950s neighborhoods, and the townhouse districts of Villa Monterey and Sands North. By the City’s account shingles were used on sloped roofs almost exclusively until the 1990s, so homes of this age are where shingle roofs are most likely to be found.
A historic district adds a step. The City’s Historic Property Ordinance requires the Historic Preservation Commission to review and approve exterior alterations to buildings on the Scottsdale Historic Register, and the City has written preservation guidelines for each district. A visible change to a roof there is something to raise with the City first.
Central Scottsdale
McCormick Ranch, Gainey Ranch and Scottsdale Ranch are master-planned communities, each with its own community association. Our own office is in this part of the city. The association matters as much as the City here: in McCormick Ranch, the property owners’ association says any change that affects the exterior of a property must be approved in advance.
North Scottsdale
North and east of the Central Arizona Project canal lies the City’s Environmentally Sensitive Lands overlay, a set of zoning rules covering 134 square miles of desert and mountain terrain. Northern communities such as DC Ranch, Grayhawk and Troon sit in or beside it, next to open desert that includes the McDowell Sonoran Preserve, which covers more than 30,500 acres.
The overlay reaches the roof. The City’s citizen’s guide to it, written in 2004, says its design standards aim to blend buildings into the desert setting: mirror-like or shiny materials are not allowed, and the brightness of colored materials is limited to a light reflective value of 35 percent. Scottsdale’s energy code, for its part, asks for reflective low-sloped roofs except where the ESL ordinance prohibits it. On a flat roof in the overlay, the finish is something to confirm with the City before a coating is chosen.
What the climate asks of a roof here
- Heat. National Weather Service figures for Phoenix from 1991 to 2020 show an average of 111 days a year at or above 100 degrees and 21 days at or above 110. In 2024 there were 70 days at or above 110.
- Sun. The City counts an average of 314 sunny days a year. In this climate the sun does much of the damage that rain gets blamed for.
- Little rain, arriving hard. Scottsdale averages 7.66 inches of rain a year. The monsoon season runs from June 15 through September 30, and the Weather Service says the outflow from a strong storm can produce winds of 50 miles per hour or more.
- Wind. The City’s re-roofing guide calls wind the most damaging element for roofing in the southwestern desert.
This is why foam and coatings are what we are best known for. A reflective, continuous surface suits a place where, on the Weather Service’s averages, the first 100 degree day comes on May 2 and the last on October 5, and where the rain arrives in short, heavy bursts.
How a job runs with us
- Free roof inspection. We go up, photograph the roof and show you its condition, whether or not it needs work.
- Written fixed price. The materials, the scope and the price are set out in writing before anything starts. We do not estimate by phone.
- The work. Our own crew does the job, cleans up and walks the finished roof with you.
The office is open Monday to Saturday, 6 am to 6 pm. The emergency leak line is answered at any hour, every day. For how licensing, city permits and HOA approval fit into a job, see our roofing contractor Scottsdale AZ page.
Looking after a Scottsdale roof between visits
Most of what keeps a roof out of trouble here is small and regular. This is what to look at, roof by roof.
| Roof | What to look at | When |
|---|---|---|
| Spray foam and coated flat roofs | Clear the drains and scuppers. Look for water still standing two days after rain, blisters, cracks and chalky or bare coating. Keep a note of the last recoat date | Before the monsoon season, and after a big storm |
| Tile | From the ground, look for slipped or cracked tile, tile pieces in the yard and crumbling mortar at the hips and ridges. Have the valleys, ridge mortar and flashing checked | Once a year, and after a big storm |
| Asphalt shingle | Look for lifted or curling edges, missing shingles, bare patches and loose granules at the roof edge. Have the flashing and valleys checked | Once a year, and after a big storm |
Two habits matter on every roof. Keep people off it who do not need to be there: the City’s re-roofing guide warns that tile breaks when walked upon, and equipment dragged across a foam roof gouges the coating. And act on the first stain. A leak caught at one flashing is a repair. The same leak left through a monsoon season can soak the deck, and by the City’s re-roofing guide, replacing roof sheathing is the point at which a building permit comes into the job.
If you have just bought a home in Scottsdale and nobody can tell you when the tile underlayment was last replaced or the flat roof last coated, start with an inspection. It is free, and the photographs give you a record of the roof’s condition on the day you took it over.
Things we say no to
- A price over the phone. The cost of a roof job depends on what is under the surface.
- A coating over a wet roof. It seals the water in. Wet material is cut out first.
- New tile when the old tile is sound. If only the underlayment has failed, we tell you that.
- A permanent repair in the middle of a storm. We stop the water that night and do the lasting repair in daylight on a dry roof.
Which page to read next
| If you have | Start with |
|---|---|
| A leak, a stain or storm damage | Roofer Scottsdale AZ |
| Questions about licensing, permits or your HOA | Roofing contractor Scottsdale AZ |
| A roof that may be past repair | Roof replacement Scottsdale AZ |
| A flat roof in Gilbert | Flat roof repair Gilbert AZ |
Where we work
Scottsdale is home, and we work in every part of it. We also serve Tempe, Paradise Valley, Fountain Hills, Cave Creek, Carefree and Phoenix. Many of Tempe’s older ranch homes have low-slope or flat roofs, or shingles, and we work on both. Further out we cover Gilbert and other Valley cities. You can read more about the business at Circle G Roofing.
Call us with your address and roof type. The inspection is free and the price is fixed in writing.
Common questions
Where is your roofing company based?
In Scottsdale. Our office is in the central part of the city, and we work from the neighborhoods around Old Town to DC Ranch, Grayhawk and Troon in the north.
What kinds of roofs do you work on?
Spray foam, coated flat roofs, clay and concrete tile, and asphalt shingles. We also do roof waterproofing, deck waterproofing and weather sealing. Spray foam roofing is our specialty.
Are you licensed and insured?
Yes. Circle G Roofing is licensed, bonded and insured. Ask us for the license details at the inspection, and check them on the Arizona Registrar of Contractors’ public contractor search.
Is the inspection really free?
Yes. The inspection and the written quote cost nothing, whether or not there is work to do. You see photographs of what we find before you see a price.
How long has Circle G Roofing been in business?
Circle G Roofing is family run and has been roofing in the Valley for more than 20 years.
Do you answer emergency calls at night?
The emergency leak line is answered 24/7. We get to active leaks the same day wherever we can, stop the water, and return to make the permanent repair in daylight on a dry roof.
Do you work outside Scottsdale?
Yes. We serve Tempe, Paradise Valley, Fountain Hills, Cave Creek, Carefree and Phoenix, and we also cover Gilbert and other Valley cities.
Do you offer a warranty?
Our full foam roof makeovers carry a 5-year warranty. That warranty is for full foam roof makeovers only. For other work, ask what applies and we will write it into your quote.