QC Coatings | Nanotechnology Roof Protection — Quad Cities, IL & IA
A two-storey home with an asphalt shingle roof on a clear day
Davenport · Bettendorf · Moline · Rock Island

Quad Cities roofs don't wear out.
They dry out.

Hail, river humidity and a hundred freeze–thaw swings a year pull the oils straight out of your shingles until they go brittle and start shedding granules. We put those oils back — in a single day, with no tear-off and no dumpster in your driveway.

Free roof inspection Done in one day Warranty-backed Locally owned
$10,204
What the average roof replacement runs in Davenport right now.
15 yrs
Added roof life we can put in writing on a qualifying roof.
1 day
Most homes are inspected, treated and finished before dinner.
40–60 nm
Particle size. Small enough to sink into the shingle, not sit on it.
Why roofs fail early here

Four things are quietly taking years off your roof

A shingle is asphalt held together by oil, with a layer of granules glued on top. Everything the Mississippi valley throws at it attacks one of those two things. Lose the oil and the shingle cracks. Lose the granules and the asphalt cooks.

None of it happens overnight, which is exactly why most homeowners don't act until there's a stain on a bedroom ceiling.

Close view of an aging asphalt shingle roof against a blue sky Granule loss on a 14-year-old roof

Freeze and thaw

Water gets into a hairline crack, freezes overnight, expands, and widens it. The Iowa–Illinois border runs through that cycle over and over from November to April.

Hail and straight-line wind

A storm doesn't have to tear shingles off to hurt you. It knocks granules loose and breaks seal strips, and the damage only shows up years later.

UV and summer heat

Sun bakes the volatile oils out of the asphalt. A dried-out shingle stops flexing with the temperature and starts cracking instead.

Ice dams and algae

Meltwater refreezes at the eaves and backs up under the shingles. River humidity feeds the black streaking that eats at the granule layer.

Your actual options

Most people think there are two choices. There are three.

If your roof is somewhere between "fine" and "finished," you've probably been told to either spend five figures now or wait until it leaks. Neither is a great plan.

Wait and see

$0 today
Until it isn't
  • Shingles keep drying out on their own
  • Small problems become deck and drywall problems
  • Insurers often value an older roof at cash value, not replacement
  • Costs nothing this year

Tear off and replace

$8,400 – $15,000
Typical Quad Cities range
  • A genuinely new roof with a new warranty
  • Two to three days of crews, noise and a dumpster
  • Your old shingles go to landfill
  • Often years earlier than the roof actually needed it
What we do

Restore what you have

A fraction of replacing
Quoted in writing at the inspection
  • Puts the lost oils back into the shingle
  • One day, no tear-off, nothing in the driveway
  • Adds up to 15 years of usable roof life
  • Keeps a repairable roof out of the landfill
What the coating does
The part you can actually see

Same rain. Same shingle. Two very different mornings.

The coating is invisible once it cures — you won't see it from the street. What you will see is what water does when it lands.

Untreated shingle
Water soaks in, sits in the mat, and works on it every time the temperature crosses freezing.
Protected by QC Coatings
Water beads up and runs straight off, carrying dirt and algae spores with it.
The money part

You are being quoted for a new roof. You may only need a treated one.

Replacement is the right call for a roof that's genuinely finished — storm-torn, leaking at the deck, or past twenty years. It's an expensive answer to a roof that's simply dried out.

  • We tell you honestly which one you have
  • Your written quote comes at the inspection, not over the phone
  • If your roof is too far gone, we say so and don't take the job
$10,204 Average cost to replace a roof in Davenport, based on 2026 contractor pricing and local roof sizes.
A fraction of it What a qualifying restoration costs instead — priced by roof size and condition, quoted in writing before anything starts.
Start to finish

Four steps, one day on site

No sales appointment at your kitchen table. No financing pitch. Someone climbs on the roof, looks at it, and tells you what it needs.

01

Free roof check

A local specialist gets on the roof, photographs what they find, and tells you whether restoration is even the right answer.

02

Small repairs first

Loose or lifted shingles get fixed before anything else. There's no point sealing a roof that isn't sound underneath.

03

Treatment goes on

The full roof surface is treated evenly. It soaks into the shingle rather than sitting on top, so your roof still looks like your roof.

04

Warranty in hand

You get your paperwork, your photos, and a warranty covering the treated roof for the term your inspection qualified for.

The short version

A particle 30,000 times smaller than a hair

The reason this works and roof paint doesn't is size. Coatings that sit on the surface trap moisture underneath and peel. The particles we use are 40 to 60 nanometers across — for scale, a sheet of paper is about 150,000 nanometers thick.

That's small enough to travel down into the shingle mat, bond with the asphalt, and rebuild the flexibility it lost — while the roof still breathes normally.

  • Restores flexibility so shingles stop cracking
  • Creates a water-shedding barrier through the surface, not over it
  • Locks granules down and reflects UV
Animation comparing the scale of a human hair to a treatment nanoparticle
The offer, in full

What the free roof check gets you

Three things, whether or not you ever book work with us. There is no second appointment, no financing pitch, and nothing to sign on the day.

Photographs of your own roof

Taken from up there, not guessed at from the driveway. You keep them, and they are worth having on file whoever ends up doing the work.

A straight yes or no

Whether restoration is right for your roof, or whether it needs a repair, a replacement, or simply nothing at all this year. We turn down roofs that are too far gone.

A written quote

Priced on your roof's size, pitch and condition. It does not expire when we pull out of the driveway, and there is no discount for deciding on the spot.

Where we work

Both sides of the river, all year

We're based in the Quad Cities and we only work in the Quad Cities. If you're not sure whether your street is in range, ask — the answer takes one phone call.

Davenport IA Bettendorf IA Moline IL Rock Island IL East Moline IL Silvis IL Milan IL Eldridge IA LeClaire IA Coal Valley IL
Before you book

The questions we get every week

If yours isn't here, the full list is on the questions page — or just call and ask a person.

Is this just paint for my roof?

No, and the difference matters. Paint and sealers form a film on top of the shingle, which traps moisture underneath and eventually peels. Our treatment is a liquid carrying particles small enough to travel down into the shingle mat and bond with the asphalt itself. The roof keeps breathing, and the colour of your shingles doesn't change.

How long does the job actually take?

Most Quad Cities homes are done in a single day. We need dry weather and a roof that's dried out from any recent rain, so we watch the forecast and will move your date rather than apply in poor conditions.

What does it cost compared to a new roof?

A meaningful fraction of what replacement costs, and the gap grows on bigger or steeper roofs. We won't quote a number over the phone because the price depends on your roof's size, pitch and condition. You get a written quote at the free inspection with no obligation attached.

How do I know if my roof qualifies?

Broadly, asphalt shingle roofs that are aging rather than failing. Roofs with active leaks, storm-torn sections, or damage down to the decking usually need repair or replacement instead — and we'll tell you that. The free inspection exists to answer this question honestly, in both directions.

What's the warranty?

Qualifying roofs carry a warranty of up to 15 years on the treatment. The exact term depends on what condition your roof is in when we inspect it, and the full terms are handed to you in writing before you agree to anything.

Find out what your roof actually needs

Two minutes to answer a few questions about your roof. If it's a candidate, we'll come look at it for free and put a real number in your hand.

Start my free roof check Or call (309) 861-9551
Mon–Sat 8–6 · Sun 9–4