Air sealing services in Castle Rock CO - a tighter house with fewer drafts
Cold drafts by the outlets, a hot upstairs and a power bill that keeps climbing usually trace back to gaps we can find and close.
What does air sealing do for a drafty house?
Air sealing services in Castle Rock close the gaps where air slips in and out of your house, around door frames, pipes, wires, vents, fans, ducts and up in the attic, so rooms stop feeling drafty and the insulation you already have can do its job.
Most people call us about a cold floor, a hot room over the garage or an upstairs that won't stay comfortable, and the leaks behind it are usually in the attic, buried under insulation where you'd never spot them. The price moves with how deep the old insulation is, how much storage and flooring has to come out of the way, how many lights, pipes and wires go through the ceiling, and whether new insulation goes in afterward. The schedule turns on whether a test happens first, how quickly the attic can be cleared and whether your address needs a permit for the work, so I'll walk your house and write an estimate that gives you your own number.
How our air sealing services work, step by step
I start in the attic with a flashlight, because that's where most of the leaking happens and the old insulation shows me what's been going on, like wet spots, droppings or eave vents that got buried. Before a big sealing job we like to have a blower door test done, where a fan set in an outside door pulls air out of the house so the leaks show up as a measurement instead of a guess. I'll point out the easy leaks you can seal yourself, and our crew takes the ones buried under insulation, pulling it back to seal around can lights, wires, pipes, ducts and the attic hatch, then laying it back down evenly so the edges are as deep as the middle. If the old material is soaked or full of droppings, we pull it out first, because new insulation laid over a problem just hides it.
Sealing usually leads into other work. If your ductwork lives in the attic, closed-cell foam insulation, a dense foam that blocks air and moisture at once, is worth what it costs because it seals and insulates in one layer, but anywhere else I'd rather seal the gaps and top up loose fill. Down at the foundation, the rim where the house frame sits on the concrete is a common draft, and we often close it up as part of basement insulation.
Why Castle Rock homeowners call us for air sealing
I write every estimate myself
I come out to look at your house and write the estimate myself, and our own installers do the work. That way the person explaining what's in your attic is the person who actually looked at it, and I'll go over it as many times as you need.
Commercial training, homes since 2017
I learned the trade spraying foam in warehouses and offices for a big commercial company, then started this business in Castle Rock in 2017, and we now work across the cities around it, from Monument up through Parker, Highlands Ranch and Centennial. That's where our habit of sealing first and insulating second comes from, so a leak doesn't end up hidden under new material.
Licensed, insured, permits checked first
We're licensed and insured, and the Town of Castle Rock wants a contractor's liability insurance, plus workers' comp where it applies, shown before a building permit application. Before we start, we check which city or county office covers your address, and when a permit is needed we apply for it and set up the inspections.
When you call (720) 408-0974 or send us a note, tell us how old the house is, whether it has gas appliances, whether insulation is in your plans and how much is stored in the attic, so I come out ready to look at the right things.
Get a free on-site estimate for air sealing
Send the form and we'll reply within one business day to set a time that works for you. I'll come out, look through your attic and the rest of the house, and write your estimate myself. It's free and there's no obligation.
What air sealing work looks like
What homeowners ask about air sealing
How much does air sealing cost in Castle Rock?
Air sealing is priced house by house, because the cost turns on what's hidden in your attic, so a real number has to come from looking at it. The Town of Castle Rock also collects a use tax on building materials, on work that needs a Town permit and on changes that don't, so it's worth knowing about when you budget. Call (720) 408-0974 and I'll come out and price your house.
How do I know if I need a blower door test before air sealing?
Colorado State University's extension service recommends a blower door test by a professional energy auditor before any significant air sealing job. The test shows whether the house is too leaky or tight enough to need mechanical ventilation, a fan system that brings fresh air in, so you know what the job calls for before work starts. A handful of obvious gaps isn't that kind of job, and I'll tell you at the estimate which side of the line your house falls on.
Can I seal the air leaks in my house myself?
Yes, for the obvious leaks around door frames and where pipes, vents and wires come through the walls, doing it yourself usually works. It won't catch the small, hard-to-find leaks, especially in an attic under layers of insulation, and that's the part worth handing to a crew.
What is the best way to add insulation to an attic that needs air sealing?
Seal first, then insulate, because most insulation, apart from foam and very densely blown-in loose fill, still lets air pass right through it. Leaks covered by new insulation are much harder to find and plug later, so if insulation is in your plans, schedule the sealing ahead of it.
Who is allowed to do air sealing work in Castle Rock?
Contractors have to register with the Town of Castle Rock and pay its fee before construction, alteration or repair work on buildings its contractor rules cover, and anyone applying for a permit needs a valid license from a place that tests contractors to the national code standard. The Town also lets homeowners act as their own contractor on residential additions, alterations and repairs, which it explains on its residential permits page.
Is it safe to air seal a house with a gas furnace or water heater?
It can be, as long as any spot that may be feeding fresh air to a fuel-burning appliance stays unsealed, which is what the state extension service advises. If it isn't clear which spots those are, a BPI-certified technician can run a combustion appliance zone test, a check of how those appliances behave once the house is tighter, to help decide what should be sealed.
Work that often goes with air sealing
- Closed-cell foam insulation
If your ducts run through the attic or a rim joist leaks badly, dense foam closes the gap and insulates it in a single layer.
- Basement insulation
Cold floors upstairs often start in a basement where the walls and rim were never insulated, so it's the next place to look once the attic is tight.