Insulation Company in Alamo Heights, TX
Insulation work in Alamo Heights, TX means something different than it does in a newer subdivision. Most homes here were built between the 1920s and 1950s, and many still have their original uninsulated walls and attics that hold a thin layer of something that used to pass for insulation. We plan every Alamo Heights job around that reality: pier-and-beam foundations, wood framing, generous attic spaces, and plaster walls that deserve to be left intact. If you’re looking for an insulation company that treats an older Alamo Heights home with care instead of treating it like a new-build tract house, call us at (903) 437-9164.
Why Alamo Heights Homes Are Different
Alamo Heights sits just northeast of downtown San Antonio, but its housing stock has almost nothing in common with the sprawling newer developments around it. The streets are lined with custom and Craftsman-style homes from the 1920s through the 1950s, many of them architect-designed and built before central air conditioning was standard. That means the original builders counted on shade trees and cross-breezes, not insulation. When we open an attic hatch in Alamo Heights, we regularly find a thin layer of compacted rock wool or, in some bungalows, shredded newspaper from decades ago. It has to come out before anything new goes in, and that removal step changes both the timeline and the price. The climate adds another layer: hot, humid summers push cooling costs up, and high humidity means moisture control matters as much as thermal performance. Homes with pier-and-beam foundations also let air move under the floor, so attic and wall work has to be planned with the whole house in mind, not just one cavity. We don’t rush through that planning.
Our Main Alamo Heights Services
Most Alamo Heights homeowners call us about one of two things: the attic that’s doing almost nothing against the Texas heat, or walls they want insulated without losing the original plaster detail. Here’s how each service works in this specific city.
Attic Insulation in Alamo Heights
Attic insulation in Alamo Heights almost always starts with removal. The older bungalows and two-story homes here tend to have decades-old material that has settled, compacted, or gotten damp in the humid summers. We remove what’s there, assess the framing and any knob-and-tube wiring that older homes sometimes still have, and then blow in new insulation matched to the attic’s depth and the family’s priorities. We work quietly enough that a napping toddler won’t wake up, and we leave a photo of the cleaned-up attic before we pull away. Read more on our dedicated Attic Insulation in Alamo Heights page.

Spray Foam Insulation in Alamo Heights
Spray foam makes sense in many Alamo Heights homes because it seals air leaks that older construction was never built to stop. Applied to the roofline or in rim joists, it cuts the humidity that creeps into attics during San Antonio-area summers and keeps cooled air where it belongs. We use foam products chosen for the specific cavity and the family’s needs, and we take extra care around original trim and plaster so the character of the home stays untouched. Every job starts with a written price, so there’s no surprise when the invoice arrives. Details are on our Spray Foam Insulation in Alamo Heights page.

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 Alamo Heights
We install products from CertainTeed, GreenFiber, and Demilec, among the eight brand lines we carry. We match the product to the home: a pet-safe blown-in option for a bungalow with original ceilings, closed-cell foam for a humid attic, or GreenFiber for a homeowner who wants recycled content. To see the full lineup, visit our brands page.
Pricing for Insulation Company in Alamo Heights, TX
Here’s what Alamo Heights homeowners can generally expect to invest. Your written quote will reflect your attic’s exact square footage, access difficulty, and what needs to be removed first.
| Service | Typical range in Alamo Heights |
|---|---|
| Old insulation removal | $1.25 – $2.50 per sq ft |
| Air sealing (attic floor, can lights, top plates) | $800 – $1,600 |
| Blown-in fiberglass attic insulation | $2,800 – $5,600 |
| Blown-in cellulose attic insulation | $3,000 – $6,000 |
| Batt insulation installation | $1,800 – $3,800 |
| Radiant barrier | $1,400 – $3,000 |
| Spray foam (closed-cell, full attic) | $6,000 – $14,000 |
What pushes the number up in Alamo Heights? Compacted old material that takes longer to remove, tight attic access in some of the older bungalows, and the extra care required around original plaster and trim. Whatever the final figure is, you’ll have it in writing before any work begins – that’s standard on every Thistledown job.
Neighborhoods We Serve in Alamo Heights
We work throughout Alamo Heights, from the tree-lined streets near Broadway to the quieter pockets closer to the Olmos Basin. Here are a few of the neighborhoods we regularly serve:
- The area around Cambridge Oval and Argyle Avenue
- Streets off of Lamont Avenue near the high school
- The Olmos Park border area
- Homes along and near Broadway
- The neighborhood streets around North New Braunfels
Crews are scheduled from our San Antonio office, and we’re typically able to reach most Alamo Heights homes within a day or two of a quote.
Service Area – Cities Near Alamo Heights
Thistledown Insulation serves homeowners across the San Antonio region, including San Antonio, TX, New Braunfels, TX, Boerne, TX, and Cibolo, TX. If you’re just outside Alamo Heights and wondering whether we cover your street, call (903) 437-9164 and ask.
Serving Alamo Heights, TX - Our Local Coverage Area
We’re based in the Alamo Heights 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 Alamo Heights
Most attic and spray foam insulation work in Alamo Heights does not require a city permit, but some neighborhoods with historic overlay rules ask for advance notice. We’ll help you sort out what your street needs before the crew arrives, and we can adjust scheduling around any HOA restrictions on work hours or vehicle parking.
Most Alamo Heights jobs can be scheduled within a few days to a week of the quote, depending on the season and how much old material needs removal first. If you have a specific window that works for your family – like while the kids are at school – call us and we’ll find a slot.
For attic work, we need a clear path from the front door to the attic hatch only. We lay drop cloths along that route and wear shoe covers the entire time. For wall retrofits, we’ll discuss access needs with you before the quote so there are no surprises on the day of the job.
If you’re ready to talk about insulation in your Alamo Heights home, call us at (903) 437-9164. We’ll answer in person, answer your questions, and put a written price in your hands before any work begins.
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 Alamo Heights Customers Say
"Removed the old flattened insulation and blew in new. They were so careful not to track anything through the house, booties on, drop cloths down. Cleaned up spotless after."
- Kelvin Osei"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