Leak Detection & Repair
We chase the source, not the stain. Water travels before it drips, so we trace it back to the real breach — then fix it right the first time.
Commercial & Multifamily Roofing · Phoenix & Arizona
A commercial or multifamily roof never leaks in just one place — it leaks into everyone's ceiling at once. One tired seam, one clogged scupper, one summer of putting it off, and a small problem becomes wet drywall, angry tenants, and a capital expense nobody budgeted. We keep the water on the outside, where it belongs.
Serving Phoenix, Tucson, Flagstaff & Greater Arizona — plus California, Colorado & Texas.
What weather does to a flat roof
A commercial or multifamily roof fails quietly, in four familiar places. Click through and see exactly where the water gets in — and why the cheap fix has a short shelf life.
A flat roof is not meant to hold water — it's meant to move it. When it can't, rain sits. And standing water is patient work: it softens the membrane, breaks down the adhesive, and doubles the weight the deck was designed to carry. Forty-eight hours after a monsoon, a healthy roof is dry. A tired one is still a pond.
Ponding is the tell. Where the water lingers, the next leak is already drafting its resignation letter.
Get a Ponding Assessment →Every flat roof is a field of seams, and every seam is a promise that two pieces of material will stay married through 115-degree summers and wind-driven August rain. The sun works to divorce them. Heat expands the membrane by day and shrinks it by night, ten thousand times a decade, until an edge lifts and the wind slips a finger underneath.
Wind-driven rain doesn't fall on a roof. It's pushed — sideways, upward, into every seam the sun has loosened.
Have Our Team Check the Seams →Water is an opportunist. It ignores the wide-open field of the roof and heads straight for the interruptions — the HVAC curbs, the vents, the pipes, the parapet walls, every place the membrane has to stop and turn a corner. That's where flashing does the hard work, and that's where age shows first.
A roof rarely leaks in the middle. It leaks where something pokes through it — and on a multifamily building, something always does.
Inspect My Penetrations →A roof's plumbing is its drains and scuppers, and like all plumbing it is ignored right up until the day it isn't. A palm frond, a season of dust, a stray plastic bag — and the roof that was designed to shed a storm now cups it. The water rises to the height of the clog and starts looking for the nearest seam. It always finds one.
Clear drains are the cheapest insurance on the building. We check them before the sky does.
Add Drain Checks to My Roof →The math on a deferred leak
Every leak has a meter running. Drag the slider and watch a Tuesday-afternoon repair turn into a line item that needs a board meeting. This is why the maintenance call beats the emergency call — every single time.
A tube of sealant and an afternoon. The whole affair, forgotten by Friday.
Stop the Meter — Get an Inspection →What we do up there
Commercial and multifamily roofs ask for more than a patch. They ask for a plan. Here's the full range — from the 2 a.m. leak call to the maintenance program that makes those calls rare.
We chase the source, not the stain. Water travels before it drips, so we trace it back to the real breach — then fix it right the first time.
Scheduled inspections, drain clearing, seam and flashing checks. A roof on a maintenance plan doesn't surprise you — and doesn't surprise your budget.
Reflective, seamless coatings and foam systems that extend roof life, cut cooling bills, and put a fresh watertight skin over an aging assembly.
Tapered insulation, new drains, added scuppers — we correct the low spots so the roof sheds water the way it was designed to.
When the monsoon wins a round, we tarp, dry-in, and stop the intrusion fast — then come back and do the permanent repair in daylight.
When a roof is past repair, we bid it straight — phased if you need it, scheduled around tenants, warrantied when it's done.
Why one leak is never one problem
A single-family roof leaks into one attic. A multifamily roof leaks into a column of apartments — the third floor's ceiling, the second floor's light fixture, the ground floor's hallway. One breach, and the phone rings from four units before lunch. The stain is only the part you can see; behind the drywall, the insulation is already a sponge and the wood is already deciding whether to rot.
For an owner or a property manager, water isn't just a repair. It's tenant complaints, habitability claims, mold disclosures, lost rent on a unit you had to empty, and a maintenance budget that just became a capital one. The leak is small. The consequences are not.
Deferred maintenance is just a bill you agreed to pay later, with interest.
The good news is that none of this is mysterious. Roofs telegraph their failures — the ponding, the blistered seam, the rust weeping from a drain. A trained eye catches them in an afternoon, and a maintenance plan catches them on a schedule. The whole game is finding the problem while it's still cheap. That's the business we're in.
Put My Roof on a Schedule →How we work
Report a leak or request an inspection. We schedule fast — faster still when water is actively coming in.
We walk the roof, meter for moisture, photograph every issue, and trace the leak to its actual source.
You get a clear scope and price — repair now, maintenance ongoing, or replacement if it's earned it.
Work scheduled around your tenants and done right, with warranty terms in writing before we start.
Why American Roofing & Waterproofing
Scheduling around tenants, documentation for owners and boards, bids you can put in a budget. We know the paperwork isn't optional.
BUR, TPO, foam, modified bitumen, tile, metal. We know how each one ages under Arizona sun and how each one fails in a monsoon.
Literally. Keeping water out of buildings is the core of what we do — not a line we added to the truck last year.
AZ ROC #325294. Family-owned, local, and accountable — the same name answers the phone and stands behind the warranty.
Where we work
We keep water off buildings from the Valley floor to the high country, and out into California, Colorado & Texas. Find your city below, or call and we'll confirm coverage on the spot.
Don't see your city? We very likely cover it — ask us or call (602) 314-4650.
Before the next storm rolls in
Report a leak, schedule an inspection, or set up a maintenance plan for your commercial or multifamily property. The managers who call before the monsoon are the ones who sleep through it.