Attic air sealing in Castle Rock CO - a ceiling that keeps warm air downstairs
Drafty rooms, a hot upstairs or dirty gray patches on your attic insulation usually mean air is leaking through the ceiling. We close those gaps.
Will sealing my attic fix the drafts and the hot upstairs?
Attic air sealing in Castle Rock means closing the holes and joints in the ceiling under your attic, around flues, can lights, wires and the tops of walls, so warm air stops slipping up into the attic and the insulation over it can do its job.
Most people call because the room over the garage won't stay warm, the upstairs bakes all summer, or they've noticed dirty spots on the insulation, which is usually air carrying dust up through a gap below it. The price moves with how many openings your ceiling has, how much room there is to crawl around up there, and whether old insulation has to be moved or pulled out first. The schedule depends on what has to happen before we seal, such as a test, a roof repair or a permit, and once I've looked in your attic, the estimate gives you the figure for your house.
How we handle attic air sealing
At the estimate I look for anything that has to be fixed before sealing, and I note every furnace, water heater and fireplace, since anything that burns fuel changes how careful we have to be. If the old insulation is soaked or full of droppings, it comes out first, because sealing underneath it leaves the problem in place. Then our installers work hole by hole, closing the gaps around flues, can lights, wires and pipes and along the tops of walls where the drywall meets the framing, with sheet metal or other heat-safe material near anything that gets hot. We keep the eave vents along the edges clear so the attic can still breathe, and we weatherstrip the hatch so it closes tight, which leaves the ceiling ready for insulation on top.
Plenty of older attics need more insulation once the sealing is done, and topping them up is retrofit insulation work. Spray foam insulation seals and insulates in one layer but costs more, so I usually recommend sealing the gaps and adding blown-in loose fill, which goes in through a hose, unless your ductwork runs through the attic.
Why Castle Rock homeowners call Reliable Castle Rock Insulation Services for attic air sealing
I check your attic myself
I come out, go up through the hatch with a flashlight and write the estimate myself, and our own installers do the sealing. You get your answers from the person who actually saw your attic, and I'll explain what I'm seeing as many times as it takes.
Sealing comes before any insulation
I spent my first years spraying foam and insulating warehouses for a big commercial company, and I started this business in Castle Rock in 2017 to bring that discipline to homes. That means problems get fixed and holes get sealed before anything is laid over them, because insulation over a leak only hides it.
Licensed and insured for attic work
We're licensed and insured, which matters when a crew is working above your ceiling around wiring and hot flues. When the job is done, our promise is simple, your satisfaction, guaranteed.
Permits checked for your address
Before we start, we find out which city or county office covers your address, and when a permit is needed we apply for it and set up the inspections. In Castle Rock that's the Town of Castle Rock, where permits have to be approved before work begins, and we handle it the same way from Monument up through Parker, Highlands Ranch and Centennial.
Up in an attic, what matters most is the order, with safety checks and repairs first, then sealing, then insulation. Request an estimate or call (720) 408-0974, and if you can, jot down any gas appliances, ceiling can lights or roof leaks so we can talk them through when I come out.
Get a free estimate for sealing your attic
We reply within one business day, and the estimate is free, done at your house and comes with no obligation. Once you send this, we'll set a time for me to come out, look in your attic with you and write the estimate myself.
Attic sealing work, up close
Questions before you book attic air sealing
How much does attic air sealing cost in Castle Rock?
There isn't a set price, because it depends on how many holes your ceiling has and how hard they are to reach. Flues, can lights, wire and pipe holes and wall tops all add up, low rooflines and deep old insulation slow the work, and can lights that aren't ICAT-rated, meaning rated airtight and safe for insulation contact, need covers built over them. I'll look in your attic and write you a figure for your house.
Do I need a blower door test before sealing my attic?
Colorado State University Extension recommends one, done by a professional energy auditor, before any major air sealing. The test, a fan set in a doorway to see how leaky the house is, shows whether your home is too leaky or needs mechanical ventilation, a fan system for fresh air, so you can plan the sealing around the result. If you've already had one, have the results handy for the estimate.
Is it safe to air seal an attic in a house with a gas furnace or water heater?
It can be, but any opening that may be bringing fresh air to something that burns fuel needs extreme care. CSU Extension's advice is to leave those spots unsealed when in doubt and have a BPI-certified technician run a combustion appliance zone test, which helps judge what sealing suits your house. That test comes before the sealing, so tell me about any furnace, water heater, boiler or gas fireplace when I come out.
What is the best way to air seal an attic before adding insulation?
Seal first and insulate second, because most insulation lets air pass right through it, apart from foam and very densely blown-in loose fill. Leaks buried under new insulation are harder to find and plug later, so if more insulation is in your plans, get the sealing done before it goes in.
How do I know if my attic is ready for air sealing?
Your attic isn't ready if it has active knob and tube wiring, the old kind strung on ceramic posts, vermiculite insulation, a pebbly gray-brown fill, or bathroom fans venting into it. A federal attic air sealing guide says to hold off for those, and for a leaking roof or an unvented kerosene heater or gas fireplace in the house, until they're dealt with. I'll point out any of them I see at the estimate.
Who can do attic air sealing work in Castle Rock?
A contractor registered with the city can, or you can as your own contractor. Castle Rock requires contractors to apply, pay a fee and register before construction, alteration or repair work on buildings, and homeowners who act as their own general contractor on residential work have to file the city's Homeowner Affidavit. Either way, the city charges building use tax on the cost of construction materials, whether or not the work needs a permit.
Work that often follows the sealing
- Retrofit insulation
If your attic only has a few inches of old insulation, topping it up once the gaps are closed is usually the next step.
- Spray foam insulation
When ducts run through your attic, foam that seals and insulates in one layer can be worth pricing out.