Insulation contractor in Cherry Creek, CO - attics and basements done in the right order
Reliable Castle Rock Insulation Services insulates and air seals attics, basements and walls for homes in Cherry Creek, CO, and handles commercial insulation for property managers, sealing the leaks first so new insulation actually does its job.
- Licensed and insured.
- Free in-person estimates.
- Expect a reply within 1 business day.
Houses and buildings we insulate in Cherry Creek
We're an insulation contractor based in Castle Rock, CO, and Cherry Creek is one of the cities we work in, along with Greenwood Village and Centennial. On jobs here I see a lot of houses that have been remodeled more than once, with finished basements, added rooms and attics that different owners topped up over the years. Property managers also call about offices and small commercial buildings. Homeowners usually call about the same few things, a room that's hot upstairs, cold floors or a power bill that keeps climbing.
A house that's been changed over the years usually has insulation from several rounds and a few leaks nobody sealed, so I look at what's up there and why before we talk about adding more. What I find also sets the price and the schedule. That mostly comes down to how much has to come out, how much sealing the attic needs, how easy the space is to reach and whether a permit is involved.
Our services in Cherry Creek, CO
- Attic air sealing
Remodeled houses here often have gaps around can lights, pipes and the attic hatch, and that's where your warm air slips out. We do air sealing first, closing those gaps before any insulation goes on, so the new layer isn't fighting a draft.
- Attic insulation
Many attics we open have insulation from several past projects, piled deep in the middle and thin at the edges, which is backward from what the rooms below need. We bring the coverage full depth out to the edges and keep the eave vents clear so the attic can still breathe.
- Basement insulation
Finished and half-finished basements bring a lot of calls here, usually about cold floors and a room that never warms up. Our basement insulation work starts with checking the concrete for dampness, because we won't seal moisture behind a new wall.
- Insulation removal
When old insulation is soaked or full of droppings, laying fresh material over it just buries the problem. We pull it out, clean the space and fix whatever caused it before anything new goes in.
- Closed-cell foam insulation
Rim joists and tight framing bays have little room and a lot of moving air, which is where closed-cell foam, a dense foam that also blocks moisture, earns its cost by sealing and insulating in one pass. Foam costs more than loose fill, so I'll tell you plainly when it's worth it and when sealing plus a top-up does the job.
- Commercial insulation
Property managers call us when an office or small commercial building needs work done to commercial standards. I spent my first years spraying foam and insulating warehouses, offices and metal buildings, and our installers bring that same discipline to every building we take on.
What Cherry Creek basements and additions need
A lot of Cherry Creek remodels start in the basement, and basements come with their own framing rule. Where Arapahoe County handles the permit, its remodel guide calls for walls built on concrete to have at least three inches of float space, a gap at the bottom that lets the slab move without lifting the wall, and the soil at your site can call for more. We insulate the concrete and the rim above it without packing that gap, and we check the walls for dampness first, because insulation over a wet wall only hides the water.
Additions are the other thing I watch for. When a house gets a new room or a finished space over the garage, the new part and the old part are often insulated to different depths and joined with gaps nobody sealed, so one room stays drafty while the rest of the house feels fine. I check each section on its own, and we seal the joins before we insulate.
Get a free on-site insulation estimate for your Cherry Creek home
Send us a few details about your Cherry Creek house or building, and we'll reply within one business day to set a time. I come out myself, look at the attic, basement or walls with you, and write the estimate, and our own installers do the work if you go ahead. The estimate is free and there's no obligation.
What careful insulation work looks like
Cherry Creek insulation questions answered
Do I need a permit to insulate my house in Cherry Creek, CO?
If your address is in unincorporated Arapahoe County, the county requires a building permit for the projects its residential and building codes list, and the Arapahoe County Building Division is the place to apply or to ask whether your job is one of them. The county takes applications online only. Before we start, we check which office covers your address, and when a permit is needed we apply for it and set up the inspections.
How long does Arapahoe County take to review a building permit?
Once a submittal is complete, first-round review averages 6 to 8 weeks for projects valued under $100,000 and 10 to 12 weeks for projects over $100,000, and the county bases those averages on its current workload and staffing. A permit also stops being valid if work hasn't started within 180 days of issue, so we plan the start date around the permit instead of the other way around.
Does my insulation contractor need an Arapahoe County license?
Yes, if the work needs a county building permit in unincorporated Arapahoe County, the contractor first needs a Building Division license of the right type. Each license lasts one year, and permits and permitted work wait until the license is active, so it's fair to ask any contractor to show you an active one. Owners doing repair or maintenance on their own property, and the people they hire for it, fall outside these license rules.
How do I find out if my Cherry Creek house is in a floodplain?
Look up your address on the effective FEMA flood map, because the Mile High Flood District says flood insurance requirements generally turn on whether a structure sits in the 100-year floodplain shown there. The district also posts draft maps that show possible future changes. When the county's floodplain regulations apply to your property, a permit also needs approval from the county's Floodplain Administrator, and it's worth knowing before we pick a material for your basement.
What does insulation cost for a house in Cherry Creek?
Your price depends on how many inches are already up there, whether old insulation has to come out first, how much sealing the space needs and which material fits, so I give you a number after I've seen the job. Foam costs more and seals while it insulates, but sealing the gaps and adding blown-in insulation, loose fill blown through a hose, usually wins unless your ductwork runs through the attic. The on-site estimate is free.
How long does attic insulation take, and do we have to leave the house?
Air sealing and blown-in work usually don't require you to leave, while spray foam does, because you stay out until the re-entry time, the point when it's safe for people and pets to come back, has passed. How long the crew is up there depends mostly on how much old material comes out and how easy your attic is to reach. I'll go over both for your house when I'm out there.