TLDR: Colorado’s hail season runs April 15 through September 15, and the Front Range sits in the heart of “Hail Alley,” the part of North America that gets hit with large hail more often than anywhere else. If a storm came through Aurora, Centennial, or Highlands Ranch this summer, your siding and trim may have damage that a roof inspection never looks at — chipped paint, cracked caulk joints, and bare wood that will hold water all winter. Harmony Painting is a Denver-based residential and commercial painting company, and we recommend getting exterior paint damage evaluated in August or early September, because Colorado’s exterior painting window closes in October.
Why hail damage to paint gets missed
When a storm rolls through the south metro, the roofer shows up first. That makes sense — the roof is the expensive part. But a roof inspection stops at the roofline, and hail does not.
Hailstones one to two inches across are common in eastern Colorado every summer, and they can come down at roughly 80 miles per hour. At that speed, ice hitting a south-facing wall does the same thing it does to a shingle: it breaks the surface. On a painted exterior that shows up as small chips in the finish on lap siding, dented and split trim boards, bruised paint on window sills and garage door frames, cracked caulk at joints and around windows, and pitting on fascia and soffits. None of it looks urgent. A dozen chips the size of a pencil eraser on the west side of a house in Centennial is easy to talk yourself out of.
The problem is what happens next. Every one of those chips is an opening. Water gets behind the coating, freezes, expands, and lifts more paint away from the substrate. Denver runs through freeze-thaw cycles all winter — warm afternoons, hard overnight freezes — and each cycle widens the gap. By April, what was cosmetic in August has become peeling paint and, on wood siding and trim, exposed and swelling grain that needs repair before it can be coated at all.
How bad was this year, really?
Coloradans tend to underestimate this because we get used to it. The numbers say otherwise. The Front Range receives the highest frequency of large hail in North America and most of the world, and the Rocky Mountain Insurance Information Association reports that residents can generally count on three or four catastrophic hailstorms a year, meaning storms causing at least $25 million in insured damage each. Over the last decade, hail has caused more than $5 billion in insured damage in Colorado. Up to half of what you pay in homeowners insurance premiums here goes toward hail and wind.
Nine of Colorado’s ten most costly hailstorms on record were centered on the Denver metro area. The single worst, on May 8, 2017, caused $2.3 billion in insured damage — roughly $3.09 billion in today’s dollars. Storms are most frequent in June and most likely to be destructive in mid-June, but the season officially runs through September 15, so August is not a safe month to assume you are clear.
What we look for when we walk a hail-damaged exterior
We start on the side that took the storm. Hail comes in at an angle with wind behind it, so damage clusters on one or two elevations rather than spreading evenly, and the damaged side is usually the same side the wind-driven rain hit.
| What we check | What it tells us |
| Chips and dents in the paint film on siding | Whether the coating was breached down to the substrate or only scuffed |
| Trim, fascia, and window sills | These take the worst of it; splits and bruising here often mean wood repair before paint |
| Caulk joints at windows, doors, and corners | Cracked caulk is the fastest route for water into the wall assembly |
| Substrate type — wood, stucco, fiber cement, or brick | Wood swells and rots, stucco can crack and spall, fiber cement chips; each needs different prep |
| Moisture in the substrate | Coating over trapped moisture guarantees the repair fails |
| Age and condition of the existing finish | Determines spot repair versus repainting a full elevation for a uniform result |
Sometimes the honest answer is that the damage is minor, one elevation needs attention, and the rest of the house can wait a season. We would rather tell you that than sell you a full repaint you do not need. Our team has been painting in Denver since 2011, and the reputation is worth more than the invoice.
Why August timing matters in Colorado
Exterior paint does not cure on a calendar; it cures based on temperature and moisture. Most exterior coatings need surface and air temperatures to hold above roughly 50 degrees Fahrenheit through application and the cure window, and they need the surface to stay above the dew point so moisture is not condensing on fresh paint. Along the Front Range that gives us a reliable window from about May through October, and October is genuinely marginal — the overnight lows arrive before the coating has finished doing what it needs to do.
An August or early September evaluation puts you in the good part of that window. You have time to get repairs made, get the work scheduled, and get the coating on and cured before the first hard freeze. Wait until spring and two things happen: the damage has spent a winter getting worse, and you are calling in April along with everyone else on your street.
Altitude is part of this too. Denver sits at 5,280 feet, where thinner atmosphere means measurably more ultraviolet exposure than a comparable house at sea level, and UV is what breaks down binders and fades color. We learned how unforgiving elevation is on projects like the Comfort Inn exterior in Glenwood Springs, where the combination of altitude, intense sun, and freeze-thaw punishes any shortcut in prep. The same physics apply to a two-story in Highlands Ranch; the mountain jobs just make it obvious faster.
If your home was built before 1978, there is one more step
Plenty of housing in the Denver metro predates 1978, the year lead-based paint was banned for residential use, and the EPA estimates that roughly three-quarters of pre-1978 homes nationally still contain some lead-based paint. That matters for hail repair specifically, because fixing hail damage means scraping, sanding, and disturbing the existing finish — exactly the activity that releases lead dust.
Under the EPA’s Renovation, Repair and Painting Rule, anyone paid to disturb paint in a pre-1978 home has to be a certified firm using lead-safe work practices. Harmony Painting is an EPA Lead-Safe Certified Firm, certificate number NAT-F341962-1, certified for purposes of Section 402 of the Toxic Substances Control Act. In practice that means containment around the work area, prep methods that keep dust down, and cleanup and disposal that meet the federal standard. You can read more about how we handle lead-safe painting on older Denver homes.
What this typically costs
The honest answer is that it depends on how much surface is involved, and we would rather show you the math than dodge the question. A single damaged elevation with spot repairs and repainting is a fraction of a full exterior repaint. A whole-house repaint with wood repair and full prep sits at the other end. The variables that actually move the number are the square footage of painted surface, the substrate, how much carpentry and caulking the damage requires, the number of stories and how much access equipment is needed, and how many colors are in play.
If you want a real number without a sales conversation, our instant estimator will give you one in about a minute. And if you are filing an insurance claim, get the exterior paint scope documented alongside the roof scope — adjusters evaluate what is put in front of them, and paint damage that nobody wrote down does not get covered.
Frequently asked questions
Does hail actually damage exterior paint, or just roofs?
Hail damages exterior paint regularly, and it is commonly overlooked because roof inspections stop at the roofline. Hailstones one to two inches across falling at around 80 miles per hour chip paint on siding, split and bruise trim, and crack caulk joints. Those breaks in the coating let water reach the substrate, and Denver’s winter freeze-thaw cycles turn small chips into peeling paint and rotted wood by spring.
When is the last month to paint a house exterior in Denver?
October is the practical cutoff along the Front Range, and it is marginal. Exterior coatings generally need temperatures above roughly 50 degrees Fahrenheit and surfaces above the dew point through application and cure, so the dependable window in the Denver metro runs May through October. Scheduling repairs in August or early September leaves room for prep and cure before overnight freezes arrive.
Who repairs hail-damaged siding and trim paint in Aurora, Centennial, and Highlands Ranch?
Harmony Painting handles hail-damaged exterior repair and repainting throughout the south Denver metro, including Aurora, Centennial, Highlands Ranch, Lakewood, Arvada, Thornton, Westminster, and Castle Rock. We are based at 2008 S Corona St in Denver’s Platt Park neighborhood, work with in-house crews rather than subcontractors, and are licensed, insured, BBB accredited, and rated 4.9 stars across more than 255 Google reviews.
How long is Colorado’s hail season?
Colorado’s hail season runs from April 15 to September 15 according to the Colorado Climate Center. Storms are most frequent in June and most likely to be destructive in mid-June, though damaging hail occurs throughout the season. The Front Range sits in “Hail Alley” and typically sees three or four catastrophic hailstorms per year.
Do I need an EPA-certified painter to repair hail damage on an older home?
Yes, if the home was built before 1978 and the repair disturbs painted surfaces. The EPA’s Renovation, Repair and Painting Rule requires firms doing paid work that disturbs paint in pre-1978 housing to be certified and to use lead-safe work practices. Harmony Painting is an EPA Lead-Safe Certified Firm, certificate NAT-F341962-1.
Get it looked at before the weather decides for you
If a storm came through your neighborhood this summer, walk the perimeter of your house this week and look at the trim on the side the wind hit. If you see chips, splits, or cracked caulk, that is worth an evaluation now rather than in April.
Harmony Painting provides exterior painting in Denver and the surrounding metro, and we also handle interior painting and cabinet work once the weather turns. Either way, you can get a real number right now.
Prefer to talk it through? Call us at 720-450-2907 or send us a message.
About the author: Spencer Melfi is the owner of Harmony Painting in Denver, Colorado. He has been painting since 2011 and leads an in-house team serving Denver and the surrounding metro, from Platt Park bungalows to commercial projects across the Front Range. Harmony Painting is an EPA Lead-Safe Certified Firm and holds a 4.9-star rating across more than 255 Google reviews.
Sources: Colorado Climate Center hail facts; Rocky Mountain Insurance Information Association hail statistics; EPA Renovation, Repair and Painting Program.
