Roof damage signs in St. George: what each one means

Why diagnosis is different in the desert

National "signs of roof damage" articles are written for climates with hail seasons and ice dams. St. George has neither in any meaningful quantity — recorded storm data for the area shows exactly one hail event in the last two years (half-inch stones, October 2024) and no ice to speak of. What Washington County roofs face instead is the strongest UV exposure in Utah, summer deck temperatures above 150°F with 60°F daily swings, and monsoon wind — gusts hit 61 mph in March 2025 and 55 mph in February 2026. Reading the signs correctly means knowing which of those three suspects you're looking at, because the answer decides whether you need a $200 fix, an insurance claim, or a replacement conversation.

Exterior signs, decoded

Curling, cracking, or blistered shingles

The classic St. George endgame. UV cooks the flexible binder out of asphalt, the shingle dries and shrinks, and edges curl while surfaces crack. Isolated patches — a sun-hammered south slope, a few brittle tabs — are repairable ($100 – $300 for up to ~25 shingles). Roof-wide curling is an age verdict, not a repair problem: the same UV that curled the visible shingles has embrittled all of them.

Creased, lifted, or missing shingle tabs

Wind damage, and the most common legitimate insurance scenario here. A gust lifts the tab, creases it at the sealant line, and either leaves it flapping or takes it entirely. It's sudden, localized, and datable — if tabs appeared creased or missing after a documented wind event, read the storm and insurance guide before paying out of pocket, and photograph everything first.

Granules collecting in gutters

Granules are the shingle's sunscreen, and the desert strips it steadily. Grit in the gutters of a 15-year-old roof is normal aging; heavy shedding on a young roof is worth a professional look. Either way, accelerating granule loss means the UV clock is running faster — the material comparison guide covers which replacements resist it.

Cracked, slipped, or broken tiles

Concrete and clay tile shrug off decades of sun and then break under one misplaced boot — an AC tech, a satellite installer, a well-meaning homeowner. A slipped or cracked tile exposes the underlayment beneath, which is the roof's actual waterproof layer. Tile repairs run $500 – $2,500, more when a discontinued profile has to be matched. Don't walk the roof to check; use binoculars.

Chalking, cracking, or exposed spray foam

On flat sections, foam past its recoat window turns chalky, then crazes, then exposes bare foam that UV destroys quickly. Patches are cheap ($200 – $500) if caught early; a foam roof that's visibly yellowing or spongy has been uncoated too long.

Rusted, lifted, or sealant-cracked flashing

Thermal cycling works fasteners loose and cracks sealant at chimneys, vents, swamp-cooler mounts, and valleys. Flashing failures are cheap to fix ($200 – $500) and cause a wildly outsized share of "mystery" leaks — always the first suspect when water shows up inside and the shingles look fine.

Interior signs: what the roof already let through

• Ceiling or wall stains. Water is getting in and traveling along framing — the entry point is usually uphill of the stain. A stain that grows or darkens after rain is active; a stable stain may be an old, already-fixed leak.
• Bubbling or peeling paint on top-floor walls. Moisture is moving through the wall assembly — often flashing at the roof-wall intersection above.
• Musty attic smell or damp insulation. A slow leak can run for months before a ceiling stain appears. The attic is where you catch it early.
• Daylight at penetrations. If light gets through around a vent or pipe boot, so does wind-driven rain.

Any active leak is a call-today situation — water damage compounds daily, and repair pricing tracks how long the leak ran ($360 – $1,550 for typical leak repairs). An inexpensive tarp over the affected slope buys time to schedule normally instead of paying the emergency premium ($200 – $300 above scheduled rates).

The 20-minute ground check

You can scope all of the above without leaving the ground — and on tile you specifically should, since foot traffic causes the cracks this page describes. Once a year (and after any major wind event), run this sequence:

1. Walk the perimeter with binoculars. From the yard, scan each slope for missing, lifted, or creased shingle tabs, slipped or visibly cracked tiles, and rusted or lifted flashing at the chimney, vents, and valleys. Do not get on the roof — especially a tile roof, where foot traffic causes the very cracks you are checking for.
2. Check the gutters and downspout splash zones. Look for heavy accumulation of shingle granules — coarse, sand-like grit. Granule shedding is asphalt UV-aging in progress: expected on an older roof, a warning sign on a young one.
3. Inspect the attic in daylight. With the lights off, look for daylight at roof penetrations, then check decking for water stains, damp insulation, and musty smell. After the next rain (or with a garden hose and a helper), recheck the suspect areas.
4. Scan interior ceilings and top-floor walls. Look for new or growing stains, bubbling paint, and soft drywall along exterior walls. Map any stain against the roof plan — water travels along framing, so the entry point is usually uphill of the stain.
5. Photograph and date everything. Take clear photos of every finding, including wide shots that show location. Dated photos give a roofer a head start on an accurate estimate — and if a storm caused the damage, they become your insurance documentation.

Leave to professionals: walking any roof, lifting shingles to inspect underlayment, and anything near the electric service mast. Photos from the ground are plenty for accurate phone estimates.

When to look: the St. George inspection calendar

Damage here follows the weather's rhythm, so checking at the right moments catches most problems while they're still cheap:

• Late spring (May–June). The most valuable check of the year. Monsoon season runs roughly July through September, and repair demand — and emergency pricing ($200 – $300 above scheduled rates) — spikes with it. Anything marginal you find in May gets fixed at scheduled rates; the same problem found in August gets tarped and queued.
• Within days of any major wind event. Wind damage is the claim-worthy kind, and both insurers and your own memory work better with prompt, dated photos. If gusts made the local news, that's your cue to do the ground check below.
• Fall (October–November). A post-monsoon once-over: anything the summer loosened, plus gutters full of a season's worth of granule evidence.
• Anytime a trade has been on the roof. AC service, solar quotes, satellite work — foot traffic is a leading cause of cracked tile. A two-minute binocular scan after any visit is the cheapest tile repair you'll ever do.

What ignoring each sign costs

Roof problems don't price by the symptom — they price by how long the water ran. The same starting point lands at very different invoices depending on when you act:

• A sealant-cracked flashing caught at the annual check is a $200 – $500 fix. Left through a monsoon season, it's a leak ($360 – $1,550); left through a year, the wet decking and drywall push it toward major-repair territory ($3,000 – $6,000+).
• A handful of wind-creased shingles is $100 – $300 today. The exposed underlayment beneath them ages fast in the sun, and the next gust widens the opening — section-scale work runs $350 – $1,000 per 100 sq ft.
• One cracked tile is a $500 – $2,500 repair. Water tracking under the surrounding courses turns it into underlayment work priced by the slope, not the tile.

That escalation curve — not fear — is the honest argument for acting on small findings quickly. It's also why the $100 – $400 professional inspection keeps showing up in our guides: it's the cheapest point on every one of those curves.

Storm damage vs. age: why the difference is worth money

Homeowners insurance generally covers sudden damage — wind, hail, falling debris — and excludes gradual wear like UV aging and granule loss. The signs on this page sort cleanly into those buckets: creased tabs and missing shingles after a dated windstorm are claim material; uniform curling across a 15-year-old roof is not, and filing for it wastes a claim on a denial. If a storm is in the picture, document first, then read the claim walkthrough — Utah law gives you specific protections on insurance-paid roof work, including a five-business-day cancellation right if your claim is denied.

What to do with what you found

• One symptom, young roof: get repair bids. The repair cost guide prices every fix on this page so you can sanity-check them.
• Multiple symptoms, or a roof past ~15 St. George summers: get an inspection ($100 – $400) and ask the hard question. The replacement cost guide has the repair-or-replace crossover math.
• Storm in the last few weeks: document, then the storm guide, then bids — in that order.
• Anyone you hire: run them through the vetting checklist first, and be appropriately skeptical of a free inspection that concludes you need a whole new roof.