Fast, Reliable Blown-In Insulation Across Kirby
Most blown-in insulation jobs in Kirby run between $1,800 and $4,500 depending on whether we’re treating the attic, the walls, or both. Our crews are typically on-site in Kirby within 24 to 48 hours of your call, and we bring the same blower-door rig and wall-cavity probe kit to every job. If your ranch home off Binz-Engleman Road or around Duffek Drive still has its original 1960s or 1970s insulation, you’re almost certainly living with R-values far below modern code and attic air leakage that’s costing you money every month. Call (830) 420-0953 for a free estimate with a written price before any work starts.
Why Topside Attic Insulation Converse Is Kirby’s Preferred Blown-In Insulation Company
We’ve worked on enough Kirby homes to know the pattern before we pull into the driveway. The post-WWII through early-1970s ranch stock here, built largely for Randolph Air Force Base workers and their families, was insulated to standards that wouldn’t pass a 1990 inspection, let alone 2026. Our Blown-In Insulation team treats Kirby as a concentrated retrofit market, not an afterthought suburb.
Kirby customers leave reviews mentioning the same thing: we show them the blower-door numbers, the wall-cavity photos, and the written scope before anyone touches a hose. Our 365-Day Done Right Promise applies to every job, and our San Antonio office dispatches crews to Kirby daily, so you’re not waiting for a contractor who “also serves” the area when it’s convenient. We know the difference between a 1962 slab-on-grade off FM 78 and a 1975 brick veneer near Kirby Boulevard, and we quote accordingly.
Background-checked, uniformed technicians. A live person answers calls 24/7. A Documented Photo Record on every visit. That’s the Haven Standard, and it’s how we’ve operated since 2016.
Our Blown-In Insulation Services in Kirby
Blown-In Cellulose
We use GreenFiber cellulose for Kirby’s dense-pack wall jobs and attic fills where moisture management and fire resistance matter. Cellulose is treated with borate, which means it resists pests and mold in Bexar County’s humid subtropical climate. For Kirby’s 1960s-70s ranches with empty wall cavities, blown-in cellulose dense-packed at 3.5 pounds per cubic foot creates an air-impermeable barrier that fiberglass batts never could. Most attic jobs with cellulose in Kirby run $2,200-$3,800 for a typical 1,200-1,600 square foot ranch.
Blown-In Fiberglass
We blow Owens Corning and Johns Manville fiberglass for attic top-ups and full re-insulations where the existing substrate is salvageable. Fiberglass doesn’t settle like cellulose and performs well in Kirby’s extreme attic heat, which routinely exceeds 150°F in July. If your attic has compressed, walked-on batts from decades of HVAC service calls, we remove the debris and blow fresh fiberglass to R-38 or R-49, depending on your roof pitch and energy goals. A full fiberglass attic job in Kirby typically runs $1,800-$3,200.
Dense-Pack Wall Insulation
This is where Kirby differs from every nearby suburb. Many 1960s-70s slab-on-grade ranches along the Randolph-adjacent streets have exterior walls with literally nothing between the drywall and the brick veneer. We probe before we quote. On a 1968 slab-on-grade ranch off Binz-Engleman Road, our tech pulled a baseboard outlet plate and probed the wall cavity down past the plate - clean drywall, empty air, then brick backing. We dense-packed the exterior walls with GreenFiber cellulose from the inside and topped the attic to R-38 with blown fiberglass, and the homeowner’s back bedrooms stopped cooking by mid-afternoon in July. Dense-pack wall work in Kirby runs $3,000-$5,500 depending on linear footage and interior access.
Blown-In Top-Up
Not every Kirby attic needs a full gut. If your existing insulation is relatively clean and uncompressed, we air-seal the top plates, can lights, and penetrations first, then blow additional material to bring you to modern R-value. But we won’t sell you a top-up if your walls are the real problem. The attic-only quote that ignores empty wall cavities is a half-measure we don’t offer. Top-up jobs in Kirby generally run $1,800-$2,800.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Before
AfterTrusted Brands We Service in Kirby
We source materials from Owens Corning, Johns Manville, Knauf, and Rockwool, among others. No proprietary lock-in, no brand kickbacks. For Kirby customers, this means we match the material to the application - GreenFiber cellulose for dense-pack walls, Owens Corning fiberglass for attic heat performance - and we stock common densities and R-values locally so your job isn’t delayed waiting on a freight shipment. Every bag is documented in your written scope, and every install is photographed for your record.
Common Blown-In Insulation Problems We See in Kirby Homes
- Uninsulated attic hatches short-circuiting new R-38. The builder-grade attic hatch or drop-down stair door in your 1960s ranch is a 2-foot-square hole in the ceiling plane. We see this constantly on Kirby jobs. We blow R-38 across the attic floor, but the unsealed hatch leaks conditioned air like an open window. We fix this with a sealed, insulated hatch cover as part of the air-sealing phase.
- Compressed, walked-on fiberglass batts performing at a fraction of labeled R-value. Decades of HVAC technicians crawling past your furnace or air handler have compressed your original batts into dusty pancakes. They look like insulation. They aren’t. We remove the debris and start fresh.
- Empty wall cavities behind brick veneer radiating attic heat straight into living space. Kirby’s 150°F+ summer attic temperatures don’t stay in the attic. They transfer through uninsulated exterior walls, turning back bedrooms into ovens by 3 PM. An attic top-up alone won’t solve this. The wall probe tells us whether you need dense-pack.
- Top plates and can lights leaking conditioned air into the attic. Every electrical penetration, every plumbing stack, every partition wall top plate is a potential chimney for your heated or cooled air. We seal these with foam and gasket before any insulation goes in. Sealed first, then insulated. In that order.
Pricing for Blown-In Insulation in Kirby, TX
| Service | Typical Range in Kirby |
|---|---|
| Attic top-up (blown fiberglass or cellulose) | $1,800 - $2,800 |
| Full attic re-insulation (remove + replace) | $2,500 - $4,200 |
| Dense-pack wall insulation (exterior walls) | $3,000 - $5,500 |
| Combined attic + wall package | $4,200 - $7,800 |
What moves the number: attic square footage, wall linear footage, whether existing material needs removal, accessibility (steep roof pitches, tight crawl spaces), and whether we find unsealed penetrations that need pre-work. We give you a flat, written price before any work starts. No add-ons after the crew arrives. Bring us a competing written estimate and we’ll give you a free second opinion, line by line. Call (830) 420-0953 to schedule.
We Also Serve Cities Near Kirby
Our crews work daily across Bexar County, including Kirby, Converse, Universal City, Live Oak, and Windcrest. Dispatch and scheduling are coordinated from our San Antonio office, with local crews serving each community without the delay of out-of-town contractors.
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
Usually yes, if they’re compressed, moisture-stained, or contaminated with rodent debris. We inspect during our initial assessment and photograph what we find. Clean, lightly settled batts can sometimes be topped up after air sealing, but Kirby’s 60-year-old original installs are rarely in that condition. Call (830) 420-0953 and we’ll show you exactly what’s up there.
Because many Kirby ranches built in the 1960s and 1970s have literally empty wall cavities behind the brick veneer. We pull an outlet plate and probe with a borescope. If we find drywall against brick, your walls are the priority, not the attic. An attic-only quote in that situation wastes your money. The probe takes two minutes and changes the entire scope.
Yes, almost certainly. Winter Storm Uri exposed catastrophic thermal envelope failures in Kirby’s older housing stock. Homes with adequate attic and wall insulation, plus sealed penetrations, maintained safe temperatures even during the multi-day outage. If your pipes froze in interior walls, you likely had empty cavities or failed attic insulation allowing heat loss. We assess this with a blower-door test and thermal imaging.
Yes. We access wall cavities through small holes drilled at the top of each stud bay, either from inside or through the exterior mortar joints if the brick pattern allows. Holes are patched and painted to match. Most Kirby dense-pack jobs are completed in one day with minimal interior disruption. The written scope specifies access method and patch responsibility before we start.
We measure existing depth, inspect for compression and contamination, and run a blower-door test to quantify air leakage. If your attic has 4-6 inches of clean, uncompressed material, a top-up after air sealing may suffice. If we find 2 inches of blackened, walked-on debris from 1968, we recommend full removal and replacement. You’ll see the photos and the numbers before you decide. Call (830) 420-0953 for a free estimate.
Written by Wes Okafor, Owner at Topside Attic Insulation Converse, serving Kirby and surrounding communities since 2016.