Garland sits in the middle of what North Texas roofers half-jokingly call "hail alley." Between the Dallas County hail belt, straight-line thunderstorm winds that roll through every spring, and summers that push attic temperatures well past 150°F, a roof here works harder than one in almost any other part of the country. Add in the expansive clay soil that shifts foundations across the Blackland Prairie, and you get a roofing system that's fighting on three fronts at once: impact damage, thermal stress, and structural movement. Knowing which warning signs mean "call someone this week" versus "keep an eye on it" can save you thousands of dollars and, more importantly, keep water out of your attic during the next storm. Alpine Exteriors inspects roofs across Garland and the rest of Dallas County regularly, and the patterns below are the ones that show up again and again on homes in this area.
Asphalt shingles are coated with ceramic granules that block UV rays and give the shingle its fire rating. When you see shiny black patches or find gritty granules washing off the roof during rain, that protective layer is wearing thin. In Garland, this happens faster than the shingle manufacturer's brochure suggests, because our summers put shingles through repeated cycles of extreme heat during the day and rapid cooling overnight. That thermal cycling makes the asphalt expand and contract constantly, which loosens granules over time. A little granule loss on a newer roof isn't an emergency, but heavy, widespread loss on a roof over ten years old is a sign the shingles have lost most of their useful life.
This is the big one for Garland. Dallas County sits inside one of the most hail-prone corridors in the United States, and it's common for a neighborhood to take a direct hit from golf-ball or baseball-size hail once every few years. Hail doesn't always punch a hole through a shingle — more often it leaves a bruise: a soft, slightly depressed spot where the mat underneath the granules has fractured. Press on the shingle and it may feel spongy instead of firm. These bruises aren't always visible from the ground, which is exactly why insurers and roofers do close-up inspections after a storm. Left alone, a bruised shingle loses its waterproofing at that spot and starts leaking months or even a year later, long after the storm that caused it.
When shingle edges curl upward or the whole shingle cups in the middle, it usually means the asphalt has dried out and lost its flexibility — again, a heat-driven problem here more than anywhere else. Cracking often shows up along the shingle's sealant strip or across tab lines, particularly on south- and west-facing slopes that catch the most direct Texas sun. Curled shingles no longer seal down tightly, which makes them easy for straight-line wind gusts to catch and peel off.
Spring storm season in North Texas brings straight-line winds that can gust past 60–70 mph without ever producing a tornado. Those winds get under weakened shingle edges and tear them loose, or lift them enough to break the seal even if the shingle stays in place. A single missing shingle after a storm is a repair, not a replacement — but if you're finding missing or lifted shingles scattered across multiple slopes, it usually means the whole roof's sealant bond has degraded from age and heat, and wind is just exposing a problem that already existed.
Flashing around chimneys, skylights, plumbing vents, and where the roof meets a wall or a second story is where most leaks actually start, not the open field of shingles. In Garland and much of Dallas County, foundation movement from our expansive clay soil adds a wrinkle most other regions don't deal with: as a slab foundation shifts seasonally with soil moisture, the frame of the house can move slightly too, which stresses flashing joints and can open small gaps that weren't there when the roof was installed. If you notice a leak that seems to track with dry spells followed by heavy rain, or cracks in interior drywall near the roofline paired with a ceiling stain, it's worth having both the roof and the foundation looked at.
Stand across the street and sight down the roofline. A ridge that dips, a plane that looks wavy instead of straight, or a section that looks lower than the rest is a structural sign, not a cosmetic one. It usually points to a deck that's absorbed water damage and softened, or in older homes, to undersized rafters that were fine decades ago but are now failing under added roofing layers or storm stress. This is one of the few signs on this list that almost always means replacement, not repair, because the wood structure underneath — not just the shingles — needs to be addressed.
Get into the attic on a sunny day and look at the underside of the roof deck. Any pinpoints of daylight mean there's a gap, nail hole, or rotted section that also lets water in during rain. Brown or gray staining on the decking or insulation, especially concentrated near a vent pipe, chimney, or valley, tells you water has already been getting through — possibly for a while, since a slow leak can take months to show up as a ceiling stain inside the living space.
Two smaller but useful signs. First, if you clean your gutters and find them full of grit — like coarse sand — that's shingle granule loss confirmed. Second, a roof with a failing radiant barrier, damaged ventilation, or thinning shingles loses its ability to reflect heat, and homeowners often notice their air conditioner running longer and their July and August electric bills creeping up before they notice any visible roof damage.
Urgent — schedule an inspection within days, not months:
Can wait for a scheduled inspection, but shouldn't be ignored indefinitely:
The honest trade-off here: replacing a roof early "just in case" wastes money, but waiting too long after real damage — especially hail bruising, which is invisible until it isn't — often turns a covered insurance claim into an out-of-pocket repair once the damage is past the claim window or the storm event can no longer be tied to the leak.
Start from the ground with a pair of binoculars — you can spot curling, missing shingles, and obvious sagging without climbing anything. Then check the attic, ideally after the next rain, for stains or daylight. If you see any of the urgent signs above, or if your neighborhood took a hail hit recently, get a professional inspection before you decide anything. A trained eye can tell the difference between cosmetic wear and hail bruising that will fail later, and can document damage properly with photos and dates in case you need to file a claim.
Know your policy before you call your insurer. Most Texas homeowner policies carry a separate wind/hail deductible, often a percentage of your dwelling coverage rather than a flat dollar amount, and some insurers apply actual cash value (depreciated) payouts instead of full replacement cost on roofs past a certain age. Understanding that number ahead of time avoids surprises later. It's also worth being skeptical of door-knocking "storm chaser" crews that show up right after a hailstorm claiming they've already inspected your roof — get your own inspection from a contractor who'll still be around for warranty service next year. Garland and Dallas County both require permits for roof replacement, so any reputable contractor, including Alpine Exteriors, should be pulling that permit as part of the job rather than skipping it.
Manufacturer estimates for standard asphalt shingles often cite 20–25 years, but that number assumes moderate climates without frequent hail. In Garland and the rest of Dallas County, 15–20 years is a more realistic planning number for a standard architectural shingle roof, and a single severe hailstorm can shorten that significantly regardless of the roof's age. Impact-resistant (Class 4) shingles hold up better here and sometimes qualify for an insurance premium discount, though they cost more upfront.
It depends on the extent of the damage and your specific policy. If an adjuster documents functional damage — bruising or cracking that compromises the shingle's waterproofing — across enough of the roof, most policies cover replacement, though you'll typically owe your wind/hail deductible and may face depreciation if your policy pays actual cash value rather than replacement cost. Purely cosmetic damage, like faded color from an older hail event with no functional impact, is a common point of denial. This is one reason a written, photo-documented inspection soon after a storm matters.
Sometimes, yes. Isolated wind damage, a small area of hail impact, or a single failed flashing joint can often be repaired without touching the rest of the roof, especially if the roof is relatively young. Widespread hail bruising, a roof already near the end of its lifespan, or damage spread across multiple slopes usually makes a repair a short-term fix rather than a real solution — and matching new shingles to sun-faded existing ones is rarely seamless.
Within a few weeks is ideal, both because hail damage is easier to identify while it's fresh and because most insurance policies have a claim reporting window. You don't need to be the first call a contractor gets after a storm, but don't let it sit for a year either — bruised shingles that go unaddressed tend to fail during the next heavy rain, and by then it can be harder to prove the hail event caused it.
If you've spotted any of the signs above, or it's simply been a while since anyone looked at your roof from up close, Alpine Exteriors offers roof inspections for homeowners throughout Garland and the greater Dallas–Fort Worth area, including Plano, Frisco, Arlington, Irving, McKinney, and Denton. We'll give you a straight assessment of what's cosmetic, what's a repair, and what genuinely needs replacement — along with photo documentation you can use for an insurance claim if the damage warrants one. Reach out to schedule a look before the next North Texas storm makes the decision for you.