Insulation Contractor in Davenport, IA - Drafty Houses Sealed, Then Insulated
D&K Davenport Insulation Company is an insulation contractor in Davenport, Iowa. We seal the gaps in attics, walls and crawl spaces first, then insulate, so the drafty rooms and cold floors in Davenport houses warm up.

Book an insulation estimate for your Davenport house
I go up in the attic myself, measure what's there, and show you what I find.
Request an estimateDavenport: older houses, thin attic insulation
I learned this trade in Davenport attics on my dad's crew, and most of our calls here still come from the same kinds of houses. Plenty of older homes have a few inches of settled insulation over the ceiling, outside walls with little or nothing in them, and a bedroom over the garage that never feels right. Newer houses call too, usually about one room that runs hot upstairs or a power bill that keeps climbing.
Houses across the river in Rock Island are a lot like ours, and we run those jobs the same way. In an older Davenport house, the job usually starts with what's already up there, because insulation that got wet or filled with droppings has to come out before anything new goes in.
Working in Davenport: permits, licenses and what moves the price
In Davenport, permits come from the city's Building Counter, and the city's permits page sets out what owners need to know. The city's list names remodels and any new or improved heating and air conditioning, but it doesn't name insulation, and the city says the list isn't complete, so we check your job before we start. If it needs a permit, we take care of it with the city and tell you up front, since contractors here pull the permit for the owner, and that step can push the start date back. Before you hire anyone, ask if they're registered with the state, because Iowa requires a contractor to register before doing construction work, and the city generally wants building and specialty work done by a licensed and bonded contractor.
The price mostly comes down to what I find in the attic: how many inches are up there now, whether old material has to come out, how many gaps around lights, pipes and the hatch need sealing, and whether foam or loose fill is the right call. The schedule turns on those same things, plus any permit and, on foam jobs, the re-entry time, which is how long you stay out before you can come back in. I come out, look at the job and write the estimate, so you get a figure for your house instead of a guess over the phone. We do the same walk-through for homeowners in Bettendorf and the other cities around Davenport.
Services in Davenport, IA
Attic insulation
A lot of Davenport attics have old fill that has settled and gone thin at the edges, which is right where the heat slips out. We top it up with blown-in insulation, loose fill blown through a hose, built up evenly out to the eaves without burying the vents.
Attic air sealing
Gaps around can lights, plumbing pipes and the attic hatch are why a room stays drafty even under a thick layer of insulation. We seal those first, so the new insulation isn't fighting a draft.
Insulation removal
In older houses we often find insulation that was soaked by an old roof leak or is full of droppings. We pull it out and clean up before anything new goes in, and if the roof is still leaking, I'll tell you to fix that first.
Wall insulation
Many older Davenport homes were built with empty outside walls, which is why those walls feel cold to the touch. We fill the closed walls through small holes and patch them, so you don't lose the wall to get insulation in.
Crawl space insulation
Cold floors over a crawl space are one of the most common calls we get here, especially under additions. We check that the space stays dry, then seal and insulate it, because insulation in a damp crawl space just holds the moisture.
Spray foam insulation
When the ductwork runs through the attic or the room over the garage won't stay comfortable, spray foam insulation is usually worth the higher cost, because it seals the air while it insulates. When that isn't your situation, I'll tell you that sealing the gaps and topping up loose fill usually does the job.
Get a free insulation estimate for your Davenport home
Send the form or call, and we'll reply within one business day to set a time. I come out to your Davenport house, look over the attic and whatever room is bothering you, and write the estimate there, free and with no obligation. If you hire us, my crew does the work and I check the finished job with you.
- Phone
- (563) 265-6737
- Location
- Davenport, IA 52801
- Hours
- Mon–Fri: 7 AM–10 PM, Sat–Sun: 8 AM–9 PM
- Credentials
- Licensed and insured.
What Davenport homeowners can count on
We're based in Davenport, Iowa, and cover 16 insulation services in the 12 cities listed on this site, plus plenty more on both sides of the river. Every job starts with a free on-site estimate.
- Based in
- IA
- Davenport
- Services
- 16
- Service areas
- 12
- Licensed and insured.
- Free on-site estimates.
- We respond within 1 business day.
Frequently asked questions
How much does it cost to insulate an attic in Davenport?
The cost of a Davenport attic depends on what's up there now and what has to happen before new insulation goes in, so I give you a written figure after I've seen it. A top-up over clean insulation is the simplest job, while removing old material, heavy sealing or choosing foam over loose fill adds to it. The estimate is free and done at your house.
Can I insulate my own house in Davenport without a contractor license?
Yes, if you hold title to a single-family house in Davenport, the city lets you do new construction, remodeling or renovation on it without a contractor license, though that doesn't cover mechanical, electrical or plumbing work. If your project needs a permit, you'd take it out yourself at the city's Building Counter in the Davenport Public Works Center. Iowa's contractor registration rule also leaves out people working on their own property.
How do I find out if my Davenport house is in a flood zone?
Check the city's floodplain maps, which show whether your property sits in a Special Flood Hazard Area, also called the 100-year flood plain. Any work on a property in one may need an approved floodplain development permit application, so it's worth knowing before we work in a basement or crawl space. For questions, Community Planning and Economic Development at City Hall takes calls at 563.326.7765.
Can an Illinois insulation contractor work on my house in Davenport?
Yes, but they have to register with the state of Iowa first, like any contractor doing construction work here. With few exceptions, a contractor whose main place of business is outside Iowa also has to file a $25,000 bond to register, so ask before you hire.
How long does it take to insulate an attic in an older Davenport house?
Topping up an attic over clean insulation is our quickest job, and it takes longer when old insulation has to come out first or there are a lot of gaps to seal. A permit can add time before we start, and foam adds a wait before you can go back inside. I'll give you the timing for your house with the estimate.
What causes the room over the garage to be so cold in Davenport houses?
Usually it's thin insulation and open gaps in the floor and short walls around that room, because it has unheated space under it and on more sides than the rest of the house. We seal those gaps and insulate the floor and walls, and when ductwork runs through there, foam is often the better fix.
Talk to us about your Davenport house
If your house doesn't need more insulation, I'll tell you that too. Call (563) 265-6737 or send the form.




