Your Roof Survived Winter. But Did It Survive Last Year's Hail?

Published: March 18, 2026 | Alpine Peak Roofing

Last week, Denver was locked in the teens. This week? We're shattering March heat records — forecasters are calling for 80 to 84°F by midweek, which would break records set in 1910 and 1971. You probably noticed it walking to your car this morning.

That temperature swing — from freezing cold to near-summer heat in days — feels great if you're ready to fire up the grill. For your roof, it's a stress test.

What Thermal Shock Does to a Roof

Roofing materials are designed to expand and contract, but they need time to do it gradually. When temperatures spike 60+ degrees in a single week, that grace period disappears.

Here's what's happening on your roof right now:

Seal strips are loosening. The adhesive strips that hold shingles flat against each other soften and lose grip when temperatures swing rapidly. Lifted edges let wind and water underneath.

Granules are shaking free. Those small mineral granules on your shingles are your first line of UV and impact protection. Thermal shock accelerates granule loss — and loosened granules from last year's hail damage are especially vulnerable right now.

Flashing gaps are widening. The metal flashing around your chimney, vents, and valleys expands with heat and contracts with cold. After a winter of freeze-thaw cycles, small gaps get bigger. That's where water finds its way in.

And those gusty downslope winds hitting the Front Range this week? They're not helping. Wind combined with loosened shingles is exactly the scenario that causes damage you won't notice until it's raining inside.

The Hidden Layer: Winter Buried Last Year's Damage

Here's the thing most Denver homeowners don't realize: if Colorado hailed last spring or summer — and it did, because it always does — that damage didn't go away. It hid.

Snow covered the bruised shingles. Ice filled the micro-cracks. Freeze-thaw cycles quietly worked those hairline fractures wider all winter long. Your roof looked fine because you couldn't see through the snow.

Now it's thawing out.

Hail bruising creates what roofers call the "polka dot pattern" — dark circular spots where granules have been knocked loose, leaving raw asphalt exposed. That asphalt ages fast. It dries out. It cracks. And those spots are now 6 months further gone than they were when the hail hit.

The cruel irony: a lot of homeowners look up at their roof in spring, see it intact, and think "we made it through winter." They did. But the damage from last year is worse than it was, and hail season starts again in April.

The Insurance Angle Most Homeowners Don't Know About

Colorado carriers have been tightening their hail coverage rules heading into 2026. We're seeing more policies with 2% wind/hail deductibles — which on a $400,000 home means $8,000 out of pocket before insurance pays a dime. Coverage exclusions for older roofs are more common. Documentation requirements are stricter.

Most homeowners find out about these changes at the worst possible moment: when they're filing a claim after a storm.

The homeowners who fare best are the ones who already have professional inspection documentation on file. When you have a dated report showing your roof's condition before the storm, you're protected. You can prove what was pre-existing and what the storm caused. Without it, adjusters have a lot of discretion — and it rarely goes in the homeowner's favor.

This isn't scare tactics. It's just how claims work now. Colorado is one of the most hail-active states in the country, and carriers have adjusted accordingly.

What to Do Before Hail Season Stacks New Damage on Old

The timing right now is actually ideal — you're in the window between winter damage revealing itself and peak hail season (April through July in the Denver metro). A professional inspection in the next few weeks means:

• You know exactly what condition your roof is in, documented
• Any damage from last year gets caught before it compounds
• You're on record before the next storm, protecting your insurance position
• If there's actionable damage, you can address it before contractor backlogs hit (and they will — every spring)

Check your gutters this week. If you find a significant amount of granules — the sandy, mineral grit that looks like coarse sand — that's a signal worth acting on. That material was on your shingles protecting you. Now it's in your downspout.

Book your free spring inspection at AlpinePeakRoofing.com — before hail season stacks new damage on top of old.

We're in the window. Don't wait until we're not.

Alpine Peak Roofing | Denver & Front Range | AlpinePeakRoofing.com