Thermal Burnsville Insulation CompanyThermal Burnsville Insulation Company

Air sealing services in Burnsville MN - fewer drafts and an attic that holds your heat

Drafty rooms, cold floors or a heating bill that keeps climbing usually trace back to hidden leaks, and we seal them so your house holds its heat.

Attic with spray foam coating the roof and walls, exposed framing, and flexible ducts running across the floor.

Why is my house drafty when the attic already has insulation?

Our air sealing services in Burnsville, MN close the gaps where warm air slips out of your house, mostly hidden ones in the attic around lights, pipes, wires, ducts, fans and the hatch, so the rooms below stop feeling drafty and your insulation can finally do its job.

Most calls I get start with a bedroom that's cold no matter what the thermostat says, a room over the garage that's hot upstairs all summer, or ice dams along the roof edge. Insulation can't fix that while air is moving straight through it, so I start by finding where your house leaks. The price moves with how many openings there are to seal, how easy your attic is to get around in and whether anything has to be fixed first. That last part sets the schedule too, because a roof leak or a bath fan venting into the attic gets handled before we seal, and I'll give you your own figure after I've been up there.

What our air sealing services cover

You can caulk and weatherstrip the easy gaps around your doors yourself, so we put our time into the leaks you can't see, mostly the ones buried under attic insulation. Before we tighten anything, I look at your furnace, water heater and any other appliance that burns fuel. Then our crew pulls back the insulation, seals around the lights, pipes, wires and hatch, and puts the insulation back. We leave the vents that are meant to breathe wide open, the soffit, ridge and gable vents and any combustion air duct, because blocking them traps moisture in the attic or starves an appliance of air. If you're adding insulation, the sealing comes first so nothing gets buried again.

Leaks don't stop at the attic. The rim joist, where the house framing sits on the foundation, is a common spot for cold air, so we often pair sealing with basement insulation. Foam costs more and seals air while it insulates, but in most attics sealing the gaps and topping up loose fill does the job for less. The exception is when your ductwork runs up there, and that's when closed-cell foam insulation, a dense foam that also blocks moisture, earns its price.

Air sealing services in Burnsville, permits and the attics we find

The City of Burnsville issues residential building permits and wants them in hand before a project starts, but its list names jobs like roofing, windows and remodels and doesn't mention air sealing, so the list alone won't tell you whether your job needs one. We check with the city before work starts and take care of the permit when a job calls for one, and if an inspection is part of it, we set it up and meet the inspector. If you'd rather ask yourself, the city takes permit questions at 952-895-4444, and its residential building permit page has the details.

Most attics we open here share the same weak spots, ceiling lights cut into the drywall, holes drilled for plumbing and wiring, an unsealed hatch and now and then a bath fan blowing into the attic instead of outside. We see the same thing on jobs in Apple Valley and Eagan, and we work in many of the other cities around Burnsville too. On a separate note, Dakota County Public Health recommends testing every home in the county for radon, and it says the colder months are a good time, since heating tends to draw the gas in from the soil.

How air sealing works with us

  1. Call or send a message

    Call (952) 234-9016 or use the form, and tell us what you're noticing, like cold rooms, ice dams or a high bill. We'll get back to you and set a time for me to come out.

  2. I look at your attic

    I come out myself, get up in the attic and check for anything that has to come first, like a roof leak, a bath fan venting into the attic or old insulation that needs to go. You get a price, the order the work will happen in and a clear note of anything another trade should fix before we start.

  3. Our crew seals the leaks

    Our install crew does the work the way we planned it at the estimate, sealing the hidden gaps and keeping the vents that need air clear. If you're adding insulation, it goes on only after the sealing is done.

  4. Walk the finished job together

    I walk the finished job with you before we leave, so you can see what we sealed and ask about anything. If something doesn't look right to you, that's the time to say so.

A room is enclosed in thick white spray foam across its walls and ceiling, with supplies stacked at the back.

Get an on-site air sealing estimate for your attic

We reply within 1 business day to set up a visit. I'll look at your attic in person and leave you a free estimate, and there's no pressure to book.

Call (952) 234-9016

Questions before you book air sealing

Can I seal air leaks in my house myself?

Yes, for the obvious ones, like gaps around door frames and openings in the walls, but doing it yourself won't catch the small, hard to find leaks. That's especially true in an attic covered by layers of insulation, where hidden leaks call for a pro, who usually tracks them down with a blower door, a fan that pulls air through the house so the gaps show up, and a thermal camera that shows where heat escapes.

Do I have to seal the attic before adding insulation in Minnesota?

Yes. Minnesota's energy code rule says attic insulation can't go in until the attic bypasses you can reach have been sealed, and a bypass is any path air takes between your heated rooms and the unheated attic. So if more insulation is on your list, plan the sealing first, and that's the order we work in.

Can air sealing affect fuel-burning appliances?

It can, because an appliance that burns fuel runs poorly without enough oxygen and can release dangerous gases like carbon monoxide into your house. That's why the appliances get looked at before the house gets tighter, and an assessor can also check how well the house is ventilated, which keeps water vapor and harmful gases from building up.

How much do air sealing services cost in Burnsville?

The price is set by your attic, not a chart, so I give you a figure only after I've seen the space. Sealing on its own usually costs less than sealing plus new insulation, and old insulation that's been soaked or is full of droppings has to come out before anything goes on top, which adds to the job.

What causes ice dams and drafty rooms upstairs?

Usually it's warm house air leaking into the attic through gaps around lights, pipes, wires and the hatch, which warms the roof so snow melts and refreezes at the cold edge. Insulation that's deep in the middle of the attic and thin at the edges makes it worse, so we pay as much attention to the edges as to the middle.

How do I get an energy check on my Burnsville home?

The City of Burnsville points residents to the Center for Energy and Environment, whose Home Energy Squad visits include an insulation inspection and help with next steps. It's a fair place to start if you want an outside look, and you're welcome to bring what they found to our estimate.

Why Burnsville homeowners call Thermal Burnsville Insulation Company for air sealing

  • The owner sees every attic

    I come out to look at every job and put the estimate together myself, then check the finished work with you after our install crew is done. You talk to the person who planned your job from the first visit to the last.

  • In business since 2021

    I learned insulation working next to my dad in attics and crawl spaces, and I started this business in Burnsville in 2021. Attic sealing and insulation done in the right order is what we're best known for.

  • Licensed and fully insured

    Minnesota's Department of Labor and Industry requires a license from contractors who work in more than one skill area, while a specialty contractor doing only insulation can work without a state license. We're licensed and fully insured, so you know where we stand before anyone climbs into your attic.

  • Told straight what comes first

    If your roof leaks or a bath fan dumps into the attic, I'll tell you to get that fixed before we seal, even when it means another trade goes first. Satisfaction guaranteed on every job, and that starts with not selling you work that won't help.

If your house feels drafty, request an estimate or call (952) 234-9016, and I'll come take a look at what's going on up there.

  • Basement insulation

    If the floors feel cold over your basement, insulating the rim and walls down there stops the drafts coming up from below.

  • Closed-cell foam insulation

    When ducts run through your attic or a spot needs to keep moisture out, this dense foam seals and insulates in one layer.

Have your attic checked for hidden leaks

If you know of a bath fan venting into the attic, a roof leak, vermiculite insulation, the gray-brown pebbly kind, or a plan to add attic insulation, mention it when you call (952) 234-9016 so I know what to look at first.

A worker in protective gear vacuums loose attic insulation through a hose as dust rises nearby.
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