Ice Dam Prevention: Why Ice Dams Form and What Stops Them
Ice dams start in the attic, not on the shingles. How they form, what ice dam prevention and steam removal cost, and the popular fixes that waste money.
Des Moines · Polk County · Beaverdale to Ankeny
A stain on the ceiling after a week of freeze-thaw, shingles across the yard after a June thunderstorm, or a 1940s roof in Beaverdale that has quietly run out of years. This free guide explains which one you have and what it usually costs, and an independent local contractor partner can put a written price on it before anyone gets on a ladder.
Repair when a repair will hold, replacement when it won't. Each guide below explains the job, what it typically costs here, and what to ask before you hire.
Leaks at flashing, boots and valleys, wind-lifted shingles, soft decking — how they are found from the attic, what they cost, and what a good repair includes. Most jobs $300–$1,500.
Roof Repair →What a full tear-off should include: decking check, synthetic underlayment, ice-and-water at the eaves, wind-rated shingles. $9,000–$20,000 on most homes.
Roof Replacement →Hail, derecho and wind damage documented from the roof, tarped if needed, and written up in a scope your adjuster can follow, and how to spot deductible games.
Storm Damage & Claims →Steam removal of the dam, repair of the damage underneath, and the attic air-sealing and ventilation work that stops it coming back next January.
Ice Dam Repair →A walked inspection with photos and a written report — for buying a house, filing a claim, or finding out how many winters the roof has left.
Roof Inspection →Des Moines, Polk County and the suburbs. Area codes 515.
Des Moines, IA roofing has no easy season. Summer brings the severe-weather belt: hail from March through August, straight-line wind out of thunderstorm complexes, and every few years something like the August 2020 derecho, which crossed the metro with hurricane-force gusts and put more roofs on insurance claims in one afternoon than most cities see in a decade. Winter brings about 35 inches of snow and weeks of freeze-thaw, which is how ice dams build at the eaves and push meltwater back under the shingles.
Then there's the housing. The city itself is mostly 1910s–1950s: brick bungalows in Beaverdale, foursquares around Drake and Highland Park, ranches on the east side and along Merle Hay. Those roofs have steep pitches, old chimneys, small attics with almost no ventilation, and sometimes two layers of shingles already up there. The suburbs are the opposite problem: Ankeny, Waukee, Grimes and Johnston have added tens of thousands of builder-grade roofs since 2000, on open ground with nothing to slow the wind, and the first generation of those shingles is aging out right now.
The result is a market where storm damage roof repair in Des Moines is as common as ordinary wear, insurance adjusters are part of most replacement conversations, and a lot of homeowners have been talked into a roof they didn't need by someone with an out-of-state plate. We'd rather you understood what you're looking at.
Roof repair — leaks at chimney flashing, pipe boots, valleys and skylights, wind-lifted shingles, soft decking. Most repairs are $300–$1,500 and done in a visit. If you were searching for Des Moines roof repair, that page covers it in detail.
Roof replacement — full tear-off, decking check, synthetic underlayment, ice-and-water membrane along the eaves to code, and architectural shingles nailed for Iowa wind. Typical Des Moines homes run $9,000–$20,000. See the roof replacement guide.
Storm damage and insurance claims — hail, derecho and wind damage documented from the roof, tarped if needed, and written up in a scope your adjuster can follow. See storm damage repair.
Ice dam repair — steam removal of the dam, repair of what it damaged, and the attic air-sealing and ventilation work that stops it coming back. See ice dam repair.
Roof inspections — a walked inspection with photos and a written report, for a house you're buying, a claim you're filing, or a roof you're not sure about. See roof inspection.
Any Des Moines roofing company you are considering should answer three questions without hesitating: is it registered with the Iowa Division of Labor, who carries its liability and workers' compensation insurance, and what does the written quote include line by line. Iowa doesn't license roofers, so registration and insurance certificates are the checks you have. Both take a few minutes.
The roofing company Des Moines neighbors recommend after a storm is usually one that has worked through several hail seasons here, has a 515 number and an address you can drive to, and will tell you when a $300 pipe boot is all you need. Our guide to choosing among roofing companies covers the checks in more detail, and questions to ask a Des Moines roofing contractor gives you the list to read from.
The most useful thing a roofer can tell you is that you don't need a roof yet. On a 1950s ranch in Urbandale with one leaking pipe boot, the answer is a $300 repair, not a $14,000 replacement. On a 2004 Ankeny two-story with bruised shingles across three slopes after a hail storm, the answer is a claim and a replacement. A good contractor looks, photographs, and tells you which. Our guide on repair versus replacement walks through the same decision.
Every hail season, the day after a storm crosses the metro, the door-knocking starts in Ankeny, Waukee and Grimes. Some of those crews are fine. Many are registered nowhere, insured nowhere, and gone by October. Iowa doesn't license roofers, but it does require contractors to register with the state and carry workers' compensation. If someone on your porch offers to "take care of" your insurance deductible, treat it as a red flag: ask your insurer, or the Iowa Attorney General's consumer protection office, what the rules are before you sign anything.
Take the photos, call your insurer, and get a written scope from a contractor with a 515 number and an address you can drive to. If you typed roofer near me Des Moines into your phone after a storm and landed here, the storm damage page explains how the claim works.
This is a free local guide, not a roofing contractor. Calls and estimate requests go to an independent local contractor partner who inspects, quotes in writing and performs the work. There is no obligation to hire, and the prices on these pages are typical ranges for the area, not a quote.
All of Des Moines — Beaverdale, Drake, Highland Park, the east side, South of Grand, Merle Hay, Easter Lake — and the Polk County metro: West Des Moines, Ankeny, Urbandale, Johnston, Waukee, Clive, Altoona, Grimes, Norwalk and Pleasant Hill. Steel roofing on acreages out toward Norwalk, Cumming and Bondurant is common too. Whether you're comparing roofing in Des Moines, Iowa after a storm or just planning ahead, the pricing page has real numbers to hold every quote against.
Ice dams start in the attic, not on the shingles. How they form, what ice dam prevention and steam removal cost, and the popular fixes that waste money.
How to vet roofing contractors in Iowa before you hire: the state registration lookup, insurance certificates, bonds and contract terms to check in 15 minutes.
A roof inspection checklist for Des Moines homes: the 30 items a walked inspection should cover, what a drone can and can't see, and how to read the report.
When a roofing permit in Des Moines is needed, who should pull it, what the inspector checks, and why a roofer asking you to pull it is a warning sign.
A sagging roofline on a Des Moines house: undersized rafters, cut framing, wet decking, two shingle layers and snow load. Fix costs and when it's urgent.
Attic condensation or a roof leak? Drips with no rain, frost on the nails, winter stains that come and go: how Des Moines homeowners tell, and fix each.
Most roof repair in Des Moines runs $300 to $1,500. A pipe boot or a handful of wind-lifted shingles sits at the low end; rebuilding chimney flashing on a Beaverdale brick chimney or replacing rotted decking under a valley is toward the top. If more than a third of the roof needs work, ask to see replacement numbers side by side.
Architectural shingles installed run $450 to $750 per square (100 sq ft) in the metro, so a typical 1,800 sq ft home with a 22–28 square roof is $10,000 to $20,000. Steep pitches, a second layer to tear off, and decking repairs add to that. Steel is roughly two to three times the price.
A good one will. Expect the contractor to photograph and chalk the damage on the roof, write a scope your adjuster can read line by line, and meet the adjuster on site if you ask. Be wary of anyone offering to pay or absorb your deductible; check with your insurer or the Iowa Attorney General's office before agreeing to anything like that.
Iowa doesn't license roofers. It requires contractors to register with the Iowa Division of Labor and to show proof of workers' compensation and unemployment insurance coverage. Ask any contractor for the registration and insurance certificates before a crew arrives, and look them up on the state's registration search; it takes a minute.
Active leaks are usually scheduled ahead of routine work. If water is coming in right now, expect a tarp first and the permanent repair once the roof is dry. Emergency roof repair in Des Moines after a storm is triaged by how much water is getting in, not by who called first.
The safe method is low-pressure steam, which cuts through the ice without tearing the shingles underneath. A good contractor then looks at why it formed — almost always warm air leaking into the attic — and prices the air-sealing and ventilation work that stops it. See the ice dam repair page.
Call for a free estimate. Mon–Sat 7am–7pm.