Insulation contractor in Castle Rock, CO - air sealed first, then insulated
Reliable Castle Rock Insulation Services is an insulation contractor based in Castle Rock, CO. We seal the gaps in attics, crawl spaces and walls first, then add loose-fill insulation or spray foam so drafty, hot upstairs rooms even out.
- Licensed and insured.
- Free in-person estimates.
- Expect a reply within 1 business day.
Older homes and new builds across Castle Rock
Castle Rock is where I started this business in 2017, and it's still home base for our crew. We work in the older houses around downtown, in the newer subdivisions that keep spreading up the hills, and in the shops and offices that property managers look after. We also work across the cities around it, from Monument up through Parker, Highlands Ranch and Centennial.
Because the houses here were built over so many different years, the attic in one tells me very little about the one next door, so every job starts with me going up the ladder and looking.
Our services in Castle Rock, CO
- Attic air sealing
In a lot of Castle Rock houses, the draft upstairs comes through gaps around can lights, pipes, wires and the attic hatch rather than through thin insulation. We do attic air sealing, closing those gaps with foam and caulk before any insulation goes down, so the new layer isn't fighting moving air.
- Spray foam insulation
When the ductwork runs through the attic or the room over the garage won't stay comfortable, spray foam insulation seals the air and insulates in one pass. It costs more than loose fill, so I'll suggest it only where the ducts, the framing or the room above make it worth paying for.
- Blown-in insulation
Plenty of attics here just need a top-up after years of settling, and blown-in insulation, loose fill we blow through a hose, gets into corners and around framing better than rolls do. We check how many inches you already have, then bring it up evenly across the whole attic.
- Insulation removal
If the old insulation got soaked from a roof leak or has mouse droppings in it, laying new material on top just buries the problem. We vacuum it out, seal the gaps the mice came through and clean up before anything new goes in.
- Crawl space insulation
Cold floors over a crawl space are a common call, and the fix usually starts with sealing where the house framing sits on the foundation. Our crew seals those gaps and then insulates the crawl space walls or floor, depending on how the space is built and whether ducts run through it.
- Commercial insulation
Property managers in Castle Rock call us for offices, shops and metal buildings that need work done to commercial standards. I spent my first years in the trade spraying foam and insulating buildings like these, so we plan the job around the people who work there.
What Castle Rock houses ask of an attic
In the newer neighborhoods, the room over the garage and the upstairs bedrooms are where people feel it first, hot upstairs and cold floors below. Those houses often have ductwork in the attic and a lot of can lights and pipes coming through the ceiling, so we seal those openings before adding insulation, and where the ducts live up there, closed-cell foam, a dense foam that also blocks moisture, can be a better call than another layer of loose fill. How many inches are already up there and how much sealing the house needs are what set the price and how long our installers are in your attic, and I'll give you your own number once I've seen it.
The older houses near the middle of town tend to have a different problem, a few inches of insulation that's packed down, piled deep in the middle and thin at the edges. That's backward, because the edges over the outside walls are where heat gets out, so we build those up and keep the eave vents clear so the attic can still breathe.
Get a free insulation estimate for your Castle Rock home
Send the form or call (720) 408-0974, and we'll reply within one business day to set a time. I come out to your Castle Rock house myself, look at the attic or crawl space and write a free estimate with no obligation. If you go ahead, our own installers do the work.
What good insulation work looks like
Castle Rock insulation questions answered
Do I need a permit to insulate my attic in Castle Rock?
Ask the city before you assume either way, because insulation isn't on the list of residential permits the Town of Castle Rock posts, which names work like re-roofs, furnaces, AC and water heaters. You can call the Building Division at 720-733-3527, and any permit that is needed has to be approved before work starts. Before we begin, 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.
What does a contractor need to work on a house in Castle Rock?
Every business working in Castle Rock needs a business license from the city, and before a contractor can apply for a building permit they also need a license earned through an ICC or equivalent code exam, a certificate of liability insurance, workers' comp where it applies and current registration with the city. Working on a covered structure before registering is against city code, so it's fair to ask any contractor about it at the estimate. We're licensed and insured, and I'm happy to go over it with you.
Can a homeowner be their own contractor in Castle Rock?
Yes, Castle Rock lets homeowners act as their own contractor for residential additions, alterations and repairs, and you'll sign a homeowner affidavit when you take on the general contractor role. If you're topping up your own attic, the two things I see go wrong most are gaps around lights and the hatch left unsealed and eave vents buried under the new fill.
What causes foundation and floor movement under Castle Rock homes?
An older regional study by the Colorado Geological Survey pointed to the soils, finding that windblown soils appear prone to collapse or settle a lot when they get wet or carry weight, and that claystone soils hold clays that swell and heave when wet. The study said each lot or building pad should get its own geologic and soils investigation. That's why I look for cracks, gaps and damp spots in crawl spaces and basements before we seal or insulate, and if something looks like the ground moving, I'll tell you to have it checked before we cover it up.
How much does insulation cost for a house in Castle Rock?
The price comes down to the size of the attic or crawl space, which material we use and how much prep the house needs before anything new goes in. Spray foam costs more than blown-in fill, pulling out old insulation adds a step, and a tight hatch or a low roof slows the crew down. I write every estimate myself after seeing the space, so the number you get is for your house.
How long does attic insulation take in Castle Rock, and do we have to leave the house?
With air sealing and blown-in fill you can usually stay home while we work, but spray foam is different, because you leave and stay out until the re-entry time, the wait before it's safe to come back in, that the foam maker sets. How long the crew is up there depends on your attic and what it needs, and I'll walk you through the day, including when the kids and pets can come back, before we start.