Insulation Company in Castle Hills, TX
Insulation in Castle Hills means working on 1950s and 60s ranch homes that were built long before anyone thought about Texas cooling loads. Most of these houses still carry their original thin fiberglass batts, and many have vented attics sitting at R-values nowhere near what Castle Hills summers demand. We are Thistledown Attic Insulation, and we handle attic insulation and spray foam for these older homes with written pricing, shoe covers at the door, and a 365-Day Done Right Promise on every job. Call (903) 437-9164 and a live person answers, any hour.
Why Castle Hills Homes Are Different
Castle Hills is a pocket of mid-century construction, mostly single-story ranch homes from the 1950s and 60s. Those houses went up when energy was cheap and insulation was an afterthought. Walk into an original attic here and you will usually find a few inches of settled fiberglass, if anything at all. Some homes around the older streets near the HEB still have uninsulated exterior walls, which means the air conditioner fights the stud cavities all afternoon.
The climate does not help. Castle Hills gets long, brutal summers with cooling loads that run for months, and while winter is usually mild, hard freezes do happen. After the 2021 freeze, we saw a spike in calls from Castle Hills homeowners asking about attic air-sealing and pipe insulation – people had watched pipes burst and wanted to stop both heat gain in July and frozen lines in February. That combination of aging housing stock and real freeze risk makes attic work here a different job than it is in newer suburbs.
Most Castle Hills attics are vented, which matters for how we approach moisture and airflow. We work around the original framing carefully, and we always match the product to the attic rather than forcing every home into the same material.
Our Main Castle Hills Services
Homeowners in Castle Hills call us most often for two things: bringing an under-insulated attic up to modern performance, and sealing problem areas with spray foam where air leaks and pipe runs meet. Each service has its own Castle Hills page with full details and pricing.
Attic Insulation in Castle Hills
Most Castle Hills attics we walk into are running on whatever was installed when the house was built – often three or four inches of compressed fiberglass that stopped doing its job years ago. We remove or top up what is there, air-seal the attic floor where needed, and install the right product for the home. On these mid-century ranch houses, that usually means blown-in fiberglass or cellulose, chosen for how it fills the irregular joist bays you find in 1950s framing. Homeowners with pets or young children often ask about product safety, and we choose pet-safe options where a choice exists. Details and exact pricing are on the Attic Insulation in Castle Hills page.

Spray Foam Insulation in Castle Hills
Spray foam earns its keep in Castle Hills homes where air leaks are the real problem – around can lights, plumbing penetrations, and the rim joists in older construction. Closed-cell foam also adds structural rigidity, which matters on aging rooflines, and it handles the humidity of a Texas attic without sagging. We carry both open-cell and closed-cell options from brands we trust, and we match the foam to the specific attic, not to a generic spec sheet. If you are wondering whether foam is worth it for your home, the Spray Foam Insulation in Castle Hills page breaks down cost and expected performance.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Castle Hills
We install several insulation brands in Castle Hills and stock common material locally so scheduling stays tight. You will see Owens Corning, GreenFiber, and Icynene on our trucks most often, and we match each product to the attic rather than pushing one line. See our brands for the full range and what we recommend for Texas attics.
Pricing for Insulation Company in Castle Hills, TX
| Service | Typical range in Castle Hills |
|---|---|
| Basic attic insulation top-up | $1,200 – $2,800 |
| Full attic insulation replacement | $2,500 – $5,500 |
| Attic air sealing (floor and penetrations) | $600 – $1,800 |
| Open-cell spray foam attic | $3,000 – $8,000 |
| Closed-cell spray foam attic | $5,000 – $12,000 |
| Rim joist spray foam | $800 – $2,200 |
| Pipe insulation (attic runs) | $200 – $700 |
| Attic hatch insulation and sealing | $150 – $400 |
Prices in Castle Hills move with attic size, access difficulty, and how much old material needs to come out first. Ranch homes with low-slope roofs and tight attic hatches take longer to work in, and that shows up in the labor line. Whatever the number is, you get it in writing before any work begins – that is not an estimate range, it is your exact price.
Neighborhoods We Serve in Castle Hills
We work across Castle Hills, from the original streets near the HEB and the schools to the quieter cul-de-sacs on the northeast side. Our technicians know these ranch layouts well enough to find the attic hatch on the first try and set up drop cloths before the ladder goes up. Typical response time for a Castle Hills estimate is same-day or next-day, depending on when you call.
- Castle Hills proper, including streets near the HEB
- North Castle Hills
- The avenues east of NW Military Highway
- The residential pockets off West Avenue
- Homes bordering the golf course on the west side
Service Area – Cities Near Castle Hills
Our Castle Hills crews also cover the surrounding metro, so if you are a few minutes outside the city line we can still reach you quickly. We regularly serve San Antonio, TX, New Braunfels, TX, Boerne, TX, and Cibolo, TX. Dispatch and scheduling coordinate from the brand’s Dallas-Fort Worth office, and the Castle Hills crews work locally, so you are never waiting on someone driving in from across the state.
Serving Castle Hills, TX - Our Local Coverage Area
We’re based in the Castle Hills area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Insulation Company in Castle Hills
In most cases we can be at a Castle Hills home for an estimate the same day you call, or by the next morning. Our crews work this part of the metro regularly, and scheduling is handled by a live person, not a call-back queue. Call (903) 437-9164 and ask for the soonest available slot.
Insulation work inside the attic rarely triggers a Castle Hills permit, but some HOAs want notice before a truck parks on the street. We can tell you what is typical for your street when we quote, and we clean up the driveway and curb area before we leave. The written price covers all labor and material – no permit surprises at the end.
Yes, and most of our Castle Hills jobs happen exactly that way. The crew wears shoe covers from the front door to the attic hatch, lays drop cloths across the hallway, and keeps tools as quiet as possible when kids or pets are napping. We choose pet-safe insulation products where a choice exists, so the dog can stay home during the job.
If your Castle Hills attic still has its original insulation, it is time to see what a modern upgrade does for your summer cooling and winter freeze protection. Call (903) 437-9164 for a free estimate and a written price before any work starts.
What happens when you call
- 1A real person answersNo phone trees - talk to a local insulation pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3A background-checked tech heads outLicensed & insured, typically within 30-60 min.
- 4You approve before work beginsNothing starts until you say go.
What Castle Hills Customers Say
"Careful and clean from start to finish. They covered the hallway, wore booties, and hauled off all the old material without leaving a speck. Respectful of the home the whole time."
- Brett Yamamoto"Attic insulation with a baby in the house. The crew was quiet, clean, and protected every floor they crossed. Took away all the debris and left it tidy. Already feeling the difference in comfort."
- Omar Leon"Attic insulation with a newborn in the house. The crew was quiet, laid protection on every floor they crossed, and hauled off all the old material. Left it spotless and the house is cozier already."
- Corinne Dyer