Attic air sealing in Columbia MO - a ceiling that stops leaking air into the attic
Drafty rooms and a hot upstairs often start with gaps in the ceiling. We find them, check safety first, and seal them tight.
- Licensed and insured.
- Free estimates at your property.
- We reply within 1 business day.
Why is my upstairs hot or drafty when the attic already has insulation?
Attic air sealing in Columbia closes the gaps between your rooms and the attic, around light fixtures, wiring, plumbing pipes and flues, so the air you paid to heat or cool stays in the house instead of escaping overhead. We do it before any insulation goes in, because that's when the insulation can do its full job.
Most calls I get about this start with an upstairs that runs hot all summer or an older house that feels drafty, and the insulation up there usually looks fine. The trouble is the openings under it, where wires, pipes, light boxes and flues pass through your ceiling, and air rides up through them all year. The price moves with how many of those openings there are, how easy they are to reach and whether anything has to be fixed first, and those repairs are also what the schedule mostly turns on. My written estimate lists every area, material and step, so you see your own figure and what it covers before anything's booked. If the insulation is thin as well, we usually pair the sealing with retrofit insulation.
How can you tell air is leaking through your ceiling into the attic?
Hot bedrooms upstairs
The upstairs runs hot all summer while downstairs feels fine, even with the AC working hard. That's usually cooled air slipping up through ceiling gaps while attic heat pushes down, and every summer you wait, the AC runs longer to keep up.
Drafts at lights and the hatch
On a cold day you can feel air moving around ceiling lights, the bath fan or the attic hatch. Those spots are open to the attic, so warm air keeps leaving all winter and carries moisture up where it can show up later as damp framing.
Dark streaks in the insulation
If you lift the hatch and see gray or black patches on the insulation over wires and pipes, air has been pulling through it like a furnace filter. The dirt marks the leak, and new insulation laid on top won't stop it.
Often done alongside air sealing
Retrofit insulation
When the attic insulation is thin, packed down or uneven, this brings an older house up to a proper depth once the leaks are closed.
Spray foam insulation
For attics with ducts or tight framing, foam can close the gaps and add insulation in a single pass.
How we handle attic air sealing
I start by finding every fuel-burning appliance in the house, like the furnace or water heater, because a tighter house can change how they vent and I want to know that before we seal around them. Then our crew pulls the insulation back where it hides the gaps and seals the tops of the walls, the holes for wires and pipes, and the openings around ceiling lights. Around chimneys and flues we use heat-rated material only, since ordinary foam doesn't belong against something that gets hot. We fit the attic hatch so it shuts tight, because a loose hatch is often the biggest single hole in the ceiling, and then the insulation goes back over the sealed openings.
On most attics, sealing the gaps and then topping up with loose fill we blow in through a hose gives you the most for the money, and that topping up is part of our retrofit insulation work. If your ductwork runs through the attic, I'll usually steer you toward spray foam insulation instead, because foam costs more but seals and insulates in one layer, and that matters when the ducts sit up there in the heat.
Seal and top up with loose fill
This suits most attics with room to crawl and no ducts up there. It closes the leaks and brings the insulation back to an even depth, edges included, for less than foam.
Seal with spray foam
This suits attics where the ductwork runs or where the space is too tight to work by hand. It costs more, but the foam stops the air and insulates at the same time.
Get a written air sealing estimate for your attic
Send the form and we'll reply within one business day to set a time for a free estimate at your house, with no obligation. If you'd rather talk, call (573) 289-3994.
Call (573) 289-3994Why Columbia homeowners call us to seal their attics
The owner measures your attic
I come out myself to look at your attic, measure and write the estimate, and our install crew does the work. At the end I check it with you, so the person who quoted the job is the one answering for it.
Based in Columbia since 2023
I started this business in Columbia in 2023, after years selling insulation jobs and then learning the install side under seasoned installers. Most of our calls here and in the cities around it, like Jefferson City, Fulton, Moberly and Boonville, come from hot upstairs rooms and drafty older houses, so that's the work we know best.
Licensed and insured for attic work
We're licensed and insured. That counts in an attic, where the crew works over your ceiling and close to wiring and flues.
On this job, nothing should get sealed until the attic is safe to seal. To have me look at yours, send a request or call (573) 289-3994.
What happens after you call about attic air sealing?
Call or send the form
Call (573) 289-3994 any day from 6 AM to 11 PM, or send the form. We'll set a time for me to come out to your house.
I measure and photograph the attic
I measure, take photos of the attic and note anything that has to be fixed before sealing. You get a written estimate listing each area, the materials and the steps, so you can see exactly what the price pays for.
We seal first, then insulate
Before we schedule, we check with the building office for your address about whether a permit is needed, and if one is, we apply for it and tell you what we found. Then our crew does the sealing first and the insulation second.
Walk the finished attic together
I walk the finished job with you and show where each material went, from the hatch to the flues. Your satisfaction, guaranteed.
Common questions
How much does attic air sealing cost in Columbia, MO?
I can't give you a fair number until I've been in your attic, because the price follows how many openings there are and how hard they are to reach. A floored attic where boards have to come up, older recessed lights that need a sealed box built over them, and chimneys or flues that need heat-rated material all add work, while an open attic with clear access keeps it down. Any repair that has to come first, and whether insulation gets topped up afterward, shows up in the total too.
What has to be fixed before attic air sealing?
A leaking roof, live knob and tube wiring, vermiculite insulation, bath fans that blow into the attic, and an unvented kerosene heater or gas fireplace all get dealt with before any sealing. If your furnace or water heater burns fuel and vents up a flue, a combustion safety test should come first to make sure fumes aren't spilling back into the house, and any problem it finds gets fixed before sealing goes ahead. I'd rather tell you up front that the roof needs work than seal and insulate over a leak.
Can I just add more insulation to my attic instead of air sealing?
No, because fluffy insulation slows heat but doesn't stop air, so a draft keeps moving right through it. Narrow gaps get caulk, foam or a spray sealant, and bigger openings get a rigid piece cut to fit and sealed in place. Plan the sealing as its own step, ahead of the insulation.
How do I know how tight my house should be after air sealing?
A blower door test, where a fan set in an outside doorway pulls air through the house, measures how airtight it is before work starts, and the guidance for a good job uses it to set a target that's handed to the owner. That way you know the goal from the first day instead of finding out after. It's a fair question to ask anyone bidding your attic.
What is the best way to air seal an attic without blocking the vents?
Seal the openings that come up from the rooms below and leave the soffit, ridge and gable vents and any combustion air duct open, because those only work with air moving through them. The vents at the eaves get buried easily when insulation goes back in, so we keep them clear and the attic keeps breathing.
Are there rebates for attic air sealing in Columbia, MO?
Yes, Columbia's home energy program lets you qualify for rebates on work like air sealing and insulation after a certified contractor does a whole-home assessment of your house. ENERGY STAR reported that in 2022, Columbia Water & Light offered rebates up to $1,200, loans up to $15,000 and free energy audits for homes in targeted neighborhoods. Those were 2022 offers, so check with the program for what's available now.
Get your attic checked and sealed right
When you call, have a few notes ready on how you get into the attic, which appliances burn fuel and any roof leaks you've seen, so I know what to look at first.