We coat commercial roofs in Nogales and nearby towns. Every commercial roof coating job starts with an inspection of the roof you already have.
Most worn commercial roofs in Nogales can take a coating once a few conditions check out. These lists show which side your roof sits on.
Sun, monsoon rain, and freezing nights work on the same few spots of a low-slope roof. The numbers on the plan match the list.
Blowing dust and leaves settle in the strainer and around the drain bowl. Water backs up, sits on the membrane, and wears the coating thin in a ring around the drain.
Low spots hold water for a day or two after a summer storm. The dried ring left behind marks where silicone, or an extra pass of coating, belongs.
Hot afternoons and cold nights stretch and shrink the roof every day, so sealant at laps dries out and splits. Those openings get fabric or seam tape before any coat.
Flashing around HVAC and refrigeration curbs takes foot traffic from service techs. Torn corners and loose counterflashing are repaired so the coating has a solid edge to seal.
Joints in the coping cap open as the metal moves, and water runs down the inside of the wall. Each joint is sealed and the base flashing checked.
Sun breaks down the top of an old coating or membrane until it rubs off as white powder. Power-washing removes the chalk so new coating bonds to firm material.
Five coating systems cover the roofs we see around Nogales. Each card shows the finish, what it goes over, and what can go on it next time.
Red-Brown Primer, White TopcoatRusting panel roofs on warehouses and cold storage get wire-brushed, primed, and coated after loose fasteners are swapped and every lap is sealed with fabric or tape.
Bright White SiliconeLow-slope roofs that hold water after a monsoon storm take silicone best, since it stands up to ponding where other coatings soften and wear through.
Matte White AcrylicWell-drained roofs that collect heavy dust stay cleaner under acrylic, a water-based coating that needs warm, dry hours to cure and recoats easily later.
Tan Foam, CoatedSprayed polyurethane foam adds insulation and fills low areas, then a topcoat shields it from sun. Older foam roofs get recoated before bare foam shows at ridges and curbs.
Coated Shingle, Light GrayCommercial mansards and steep slopes qualify only when both the shingle maker and the coating maker approve, and the shingles still lie flat with their granules.
Chalky white turning gray, bare spots at the seams, or rust showing through usually means the top layer is nearly gone. Tell us the roof size and type for a ballpark number.
The order below holds for every system. Skipping a step is how coatings peel early.
A roofer walks the whole roof, checks seams, drains, curbs, and flashing, and takes moisture readings. Core cuts settle any doubt about wet insulation hiding under a dry-looking surface.
Wet insulation found in the survey is cut out and replaced, and blisters, splits, and torn flashing are repaired. The coating then goes over a roof that is dry all the way down.
Power-washing strips dust, chalk, and loose granules. After the surface dries, primer goes on rust, aged single-ply, or any area the adhesion test flagged.
Seams, laps, curbs, pipes, and drains get fabric or seam tape set in coating. These are the spots where water gets in first, so they receive extra material.
The base and top coats are rolled or sprayed in lanes while a wet-film gauge checks thickness. Readings are written down so the full roof meets the product spec.
These gains depend on starting with a dry, repaired roof. On that kind of roof, a coating can do the following.
The existing roof stays in place, so no old membrane or insulation heads to the landfill.
Work happens on the roof surface, letting tenants and docks keep running below.
A white or light finish turns back much of the sun that would heat the roof deck.
One continuous film wraps laps, fasteners, and curbs with no cut edges left to peel.
When the top layer wears, the roof is cleaned and recoated over the same base.
Primer and topcoat cover rust blooms on metal panels before they eat into the steel.
A topcoat blocks the sunlight that turns bare polyurethane foam brown and powdery.
Coating a dry, solid roof usually runs well below the price of a full replacement.
We coat roofs in Nogales and five nearby communities along I-19 and SR 82. The map marks each place by the building type that fills it.
Produce warehouses and cold storage near the Mariposa Port of Entry carry big metal and low-slope roofs under city permits.
Nogales, city limitsWide distribution and light industrial roofs here tend to hold water after storms, which points many of them toward silicone.
I-19, north of NogalesGalleries and shops stay open while roofs are coated, and buildings in the historic zone check coating color with the county.
I-19, along the Santa Cruz RiverFarm and small commercial metal roofs here usually need rust treatment and fastener work before any topcoat goes on.
I-19, south of TubacSmall storefront roofs near Sonoita Creek are coated in short dry windows, with town permits and county plan review.
SR 82, northeast of NogalesStand-alone roadside roofs off I-19 take the full force of monsoon storms, so post-storm checks matter most here.
I-19, north end of the areaStrong sun, big daily temperature swings, and short heavy storms do most of the damage. Nogales sits near 3,800 feet, sees more than 100 days a year at 90°F or hotter, and gets most of its rain from July through September.
On the roof that shows up as chalky coating on sun-facing areas, cracked sealant where metal moves, and dust piled at drains.
It turns on the insulation and the deck. A roof with dry insulation and a firm deck can be repaired where needed and then coated. Small patches of wet insulation are cut out first.
Wet insulation across much of the roof, or a rusted-through deck, calls for replacement. A moisture survey answers the question.
Yes, that is the point of a coating. The existing membrane, metal, or foam stays in place and becomes the base. It has to be cleaned, dried, repaired, and primed where needed, and any wet insulation under it gets replaced before coating starts.
In most cases, yes. The work happens on top of the roof, so stores, offices, and docks keep running below. Rooftop air intakes get covered while coating is sprayed nearby, and sections near busy entrances can be rolled by hand instead of sprayed.
A white coating reflects much of the sunlight that would otherwise heat the roof deck, which cuts heat gain into the space below. How much that changes refrigeration load depends on the insulation under the roof, so the inspection looks at both.
Roof access, the approximate roof size if you know it, and any notes on where leaks or ceiling stains have shown up inside. Past roofing paperwork helps too, since it shows what kind of roof and coating are already up there.
Tell us the roof size and type for a ballpark coating figure, or call and talk through the roof with us.
Leave a name and number and we will call to talk through the roof.
Or call now: +1 (623) 310-0223