Fast, Reliable Blown-In Insulation Across Kirby
Blown-in insulation in Kirby, TX typically runs $1.80-$3.40 per square foot for attic applications, with most complete retrofits on mid-century ranch homes falling between $2,400 and $5,800 depending on attic size and whether existing material needs removal. Our crews are dispatched from the San Antonio office and carry Kirby-specific permits on every truck, which means we can usually inspect your attic and begin work within 48 hours of your call. If you’re on a street like Ackerman Road or near Kirby City Hall, we’ve likely already handled a house on your block, and we know the permitting office on Bauman Street by name. Call (830) 243-6352 for a written price before any work starts.
Why Topside Attic Insulation New Braunfels Is Kirby’s Preferred Blown-In Insulation Company
We’ve insulated enough Kirby attics to know the pattern: a 1968 ranch on slab, original fiberglass batts compressed to half their labeled thickness, and an attic floor that was never air-sealed because there was no code requirement when the house was built. Our Blown-In Insulation team treats every Kirby job as a full envelope retrofit, not a material dump.
Homeowners in Kirby’s neighborhoods around Sterling Oaks and the streets near Friendship Park have left us reviews citing the blower-door numbers we publish, the photo records we deliver, and the fact that we pull the right permit the first time. We’re not guessing at Kirby’s building department requirements; we’ve filed there repeatedly since 2016.
Response time to Kirby is same-day or next-day for most calls. Because we’re coordinating from the San Antonio metro office, we don’t waste a morning driving in from Seguin or Cibolo. That matters when your attic is hitting 150°F and your HVAC is running nonstop.
Our Blown-In Insulation Services in Kirby

Blown-In Cellulose
We use GreenFiber cellulose on most Kirby attic retrofits because it performs well in the extreme heat that builds under these shallow-pitched ranch roofs. Cellulose settles less than you’d expect when it’s blown to proper depth, and it handles the humidity spikes that come with Kirby’s position in the San Antonio climate zone. A typical Kirby ranch attic, roughly 1,200-1,800 square feet, takes four to six hours to strip old batts, seal top plates and can-light penetrations, and blow fresh cellulose to R-38 or R-49. We document the before-and-after blower-door reading so you can see the air-leakage reduction in CFM50, not just feel it on your light bill.

Blown-In Fiberglass
For detached workshops and garages in Kirby, we often spec Owens Corning blown-in fiberglass. It doesn’t absorb moisture the way cellulose can, which matters in an unconditioned shop where the door gets opened thirty times a day. We were called to a 1962 ranch on a Kirby street where the homeowner ran a detached workshop behind the house and wanted the whole property handled in one visit - no return trips. The attic had the original compressed fiberglass batts and a shop side with nothing at all; our crew brought GreenFiber cellulose for the house and Owens Corning blown-in fiberglass for the shop, topped both to modern depth, and verified airflow at the heavy shop door before we left. The homeowner’s only note was that we didn’t have to come back for anything.

Dense-Pack Wall Insulation
Kirby’s mid-century ranch homes were built with empty wall cavities - no insulation, no consideration for thermal bridging through the studs. Dense-pack cellulose fills those cavities without tearing down drywall, using a two-hole method that most homeowners never notice after repair. This is slower work than attic blowing, and it requires a crew that understands how these older Bexar County homes were framed. We dense-pack walls on about one in four Kirby jobs, usually after the attic is sealed and insulated, because the attic is where the worst heat gain lives.

Blown-In Top-Up
Some Kirby homeowners had insulation added in the 1990s or 2000s, but it was blown over unsealed attic floors and has since settled, shifted, or degraded. A top-up without prep work is a waste; we inspect first, photograph the existing condition, and either level and supplement or recommend full removal if the old material is contaminated or compressed. Our written price distinguishes between these scenarios so you’re not paying for a top-up when you need a reset. Most Kirby top-up jobs, when they’re viable, run $1,200-$2,400.

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.
Before
AfterTrusted Brands We Service in Kirby
We stock GreenFiber, Owens Corning, and Johns Manville materials on our San Antonio-area trucks, which means Kirby jobs don’t wait on a supplier run. We don’t push proprietary products or lock you into a single manufacturer; we spec what performs for your specific attic geometry and budget. Knauf fiberglass is available for jobs where moisture resistance is the priority. Every bag is documented in your photo record, so you know exactly what went into your home.
Common Blown-In Insulation Problems We See in Kirby Homes

- Insulation blown over compressed original batts without removal or leveling. A crew blows new material into a Kirby ranch attic without first removing or leveling the original mid-century fiberglass batts, so the new material sits unevenly and R-value falls short of what the homeowner paid for. We strip or level first, every time.
- Wrong permit jurisdiction stalls the job. Contractors assume Kirby permits run through San Antonio and either skip the city of Kirby permit or file with the wrong jurisdiction, stalling the job and leaving the homeowner exposed on inspection. We pull Kirby permits specifically; it’s on our checklist before we load the truck.
- No air sealing before the blow. Blown-in is added over an attic with no baffles or air sealing, so rising heat and the 140°F+ summer attic air push the loose fill around and degrade coverage near the eaves. Our crews seal top plates, wire penetrations, and can-light boxes before any insulation goes in.
- Detached workshops treated as afterthoughts. Kirby’s lots often include a shop or garage that was never insulated, and homeowners get quoted for the house only. We measure and price the full property, and we bring the right material density for workshop doors that see heavy use.
Pricing for Blown-In Insulation in Kirby, TX
| Service | Typical Range (Kirby Market) |
|---|---|
| Blown-in cellulose attic retrofit (remove old + seal + blow new) | $2,400 - $5,800 |
| Blown-in fiberglass attic (new construction or clean attic) | $1,800 - $4,200 |
| Blown-in top-up over existing (viable condition only) | $1,200 - $2,400 |
| Dense-pack wall insulation (per square foot of wall) | $2.20 - $3.80 |
| Detached workshop or garage (typical 400-600 sq ft) | $900 - $1,800 |
These ranges reflect Kirby’s mid-century housing stock: smaller footprints than newer suburbs, but often requiring more prep work because of age and original construction quality. The final written price depends on attic square footage, current insulation condition, accessibility, and whether we need to install baffles or repair soffit ventilation. We deliver that written price on-site before any work starts - Haven Standard Clause 1, no exceptions. Call (830) 243-6352 to schedule a free inspection and written estimate.
We Also Serve Cities Near Kirby

Our crews handle Kirby and surrounding communities including New Braunfels, Cibolo, Seguin, and Schertz. Dispatch is coordinated from our San Antonio metro office, so we’re never routing from distant hubs. If you’re in Kirby proper, you get the same crew availability as our closest neighbors.
Serving Kirby, TX - Our Local Coverage Area
We’re based in the Kirby 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 - Blown-In Insulation in Kirby

You need a City of Kirby permit specifically; San Antonio’s building department has no jurisdiction inside Kirby’s enclave boundaries. Our office files with Kirby’s permit desk on Bauman Street for every job, and we include the permit number in your written scope before work begins. Call (830) 243-6352 and we’ll confirm permit status on your estimate.
No, and we wouldn’t recommend it. These homes often have bare drywall ceilings or thin, compressed original batts that would undermine new material. We remove or level the existing layer, seal air leaks at top plates and penetrations, then blow fresh insulation to consistent depth. Most Kirby ranches from this era need the full retrofit sequence.
Kirby attics routinely exceed 140°F for weeks each summer, and uninsulated or under-insulated ceilings let that heat radiate directly into living spaces. Your HVAC runs longer, wears faster, and still can’t keep up. Proper blown-in insulation with air sealing can cut attic heat transfer by 40-60%, which is why it’s the highest-ROI upgrade we specify in this climate. Call (830) 243-6352 for a free estimate.
Yes, and we prefer to. We bring separate material specs for conditioned versus unconditioned spaces, and we size the crew and truck load for the full property. One trip means one written price, one photo record, and no scheduling gaps. Mention the workshop when you call so we account for it in the estimate.
It helps both. The February 2021 freeze exposed how severely under-insulated older Bexar County slab homes are for cold events; Kirby’s 1960s ranches lost heat rapidly through uninsulated attics and walls. Blown-in insulation slows heat loss in winter just as it blocks heat gain in summer. The same upgrade addresses both failure modes.
Written by Wes Okafor, Owner at Topside Attic Insulation New Braunfels, serving Kirby since 2016.