Fast, Reliable Blown-In Insulation Across Kirby
Most attic blow-in jobs in Kirby run $1,800-$3,400 for a full upgrade to R-38 or R-49, and our crews typically reach Kirby homes within 45 minutes of dispatch from our San Antonio office. We’re familiar with the tight access points that come with a fully built-out one-square-mile city: alley gates off FM 78, narrow driveways near Kirby Middle School, and slab-on-grade ranches on streets like Duffek and Ackerman where the original 1960s insulation has been cooking for sixty years. Call (830) 402-5240 for a written price before any work starts - that’s Haven Standard Clause 1, no exceptions.
Why Topside Attic Insulation Schertz Is Kirby’s Preferred Blown-In Insulation Company
We’ve completed blown-in insulation work on hundreds of homes in the Kirby 78219 ZIP, and the pattern is consistent: post-WWII and 1960s-70s slab-on-grade ranches with 3-4 inches of collapsed fiberglass batt that stopped performing decades ago. Our Kirby customers leave reviews mentioning the blower-door numbers we publish, the photo record they receive, and the fact that we text when the technician is en route - no vague arrival windows.
Response time to Kirby averages under an hour because we dispatch from the San Antonio office and know the local streets. We understand which Kirby neighborhoods have alley-only access, where the narrowest gates are, and how to run hose from the street when a truck won’t fit. That local logistics knowledge saves an hour on every job.
Our Blown-In Insulation team has worked alongside Kirby’s active reroofing crews for years. We know the rhythm of this market: when a roof comes off, the attic opens up, and that’s the moment to seal and insulate properly.
Our Blown-In Insulation Services in Kirby
Blown-In Cellulose
Blown-in cellulose is our most specified product for Kirby’s aging ranch stock. We use GreenFiber cellulose treated with borate fire retardant, blown to R-49 depth over a fully sealed attic floor. In Kirby’s climate - attics hitting 148°F by June - cellulose’s denser pack and better resistance to convection looping outperforms old fiberglass batts that were never designed for this heat load. We never blow over an unsealed surface; top plates, can lights, and wire penetrations get sealed first.
Blown-In Fiberglass
For homeowners who prefer fiberglass, we blow Owens Corning AttiCat or Johns Manville Climate Pro to specified depth with marked ruler measurements photographed every fifty square feet. In Kirby’s 1950s-70s homes with shallow rafters, fiberglass can achieve target R-value with less weight load on aging drywall ceilings. We still air-seal first. Always.
Dense-Pack Wall Insulation
This is the critical upgrade most Kirby homeowners miss. Fast-built tract ranches on streets near Randolph AFB frequently have empty wall cavities - not under-insulated, but completely uninsulated. We dense-pack those cavities with Johns Manville fiberglass or cellulose at 3.5 pounds per cubic foot, filling the gap between studs so west and south walls stop radiating afternoon heat inward. A blown-in attic upgrade alone won’t fix this. The wall work adds $800-$1,600 to a typical Kirby job but drops interior surface temperatures by 8-12°F on summer afternoons.
Blown-In Top-Up
Some Kirby homes had insulation added in the 1990s or 2000s but never got enough depth to reach current IECC standards. We measure existing depth with a ruled probe, photograph the reading, and calculate exactly how much additional blown material is needed to reach R-38 or R-60. No guesswork. If the existing material is contaminated or improperly installed, we’ll tell you before we add anything. Haven Standard: written scope before any work starts.
What happens when you call
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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.
Trusted Brands We Service in Kirby
We stock GreenFiber cellulose and Owens Corning fiberglass in our San Antonio warehouse, with Johns Manville dense-pack material available on two-day order. No proprietary lock-in - we specify by performance, not by brand rebate. For Kirby jobs, this means we can match material to the specific retrofit condition: cellulose for attics with complex air-sealing geometry, fiberglass for shallow rafter bays, dense-pack for empty wall cavities. Every bag is documented in your photo record.
Common Blown-In Insulation Problems We See in Kirby Homes
- Settled batts topped with loose fill, never sealed. We find this constantly in Kirby’s 1960s ranches: original R-11 fiberglass compressed to R-6, then a previous contractor blew six inches of cellulose on top without sealing the attic floor first. The new insulation filters hot air through the gaps, and within two summers the effective R-value is half what the depth suggests.
- Equipment access stretched too far. Kirby’s alley-load homes and narrow townhome doors mean hose runs of 75-100 feet aren’t unusual. Without proper blower calibration and staged hopper placement, the far end of the attic gets thin coverage - especially over the conditioned-space boundary where it’s needed most.
- Attic upgraded, walls ignored. A Kirby ranch with a fresh R-49 attic but empty wall cavities still radiates heat through west and south walls from 2 PM to sunset. The electric bill drops some, but not nearly what it could. We measure wall cavity fill with a thermal camera before we quote; if they’re empty, we tell you.
- Missed coordination with reroof or HVAC timing. Because Kirby has zero undeveloped land and no new construction, attic access typically happens only when a roof tear-off or air-handler swap exposes the space. Homeowners who don’t plan insulation into that sequence end up paying for attic access twice - or never getting it at all.
Pricing for Blown-In Insulation in Kirby, TX
A typical full attic blow-in to R-49 in a 1,200-1,800 square foot Kirby ranch runs $2,200-$3,400, including air sealing of top plates and penetrations. Blown-in top-up jobs, where existing insulation is viable, run $1,200-$1,900. Dense-pack wall insulation for a three-bedroom ranch with empty cavities adds $800-$1,600. These are Kirby-specific ranges; our heat-island location and all-retrofit housing stock mean labor factors differ from suburban Bexar County markets with newer construction and easier access.
What moves the number: attic square footage, existing material condition, accessibility (street vs. alley), whether wall cavities need dense-pack, and whether radiant barrier is specified. Every variable is itemized in your written price before work starts. Free estimates. Free second opinion on any competing written quote. Call (830) 402-5240.
We Also Serve Cities Near Kirby
Our crews work Kirby and the surrounding corridor daily: Schertz, Cibolo, Universal City, and Selma. Same written-price standard, same blower-door documentation, same live-person answering at (830) 402-5240.
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
We stage the blower unit at the street and run reinforced hose through side gates, carports, or ground-floor windows - whatever the narrowest point allows. For a 1962 slab-on-grade ranch near the Randolph AFB edge of Kirby, the alley-side gate was too narrow for our truck, so we ran hose from the street, then blew GreenFiber cellulose over a sealed radiant barrier to R-49 and dense-packed the west wall cavity with Johns Manville fiberglass that had been completely empty since the house was built. The homeowner’s July electric bill dropped noticeably and the attic stayed under 118°F on the same thermostat settings. We’ll walk your access with you during the estimate and specify the hose run in the written scope.
Blown material fills irregular joist bays, covers top plates, and surrounds wiring and ductwork in ways batts cannot - critical in Kirby’s economically built ranches where framing isn’t always on standard centers and gaps are common. Batts also require someone to crawl and fit every piece; blown insulation covers more square feet per hour with fewer disturbance points to your ceiling drywall. For a retrofit market with no new construction, blown-in is simply the practical choice. Call (830) 402-5240 and we’ll show you the depth marks from our last Kirby job.
Yes, if the wall cavities are empty - and in fast-built 1950s-70s Kirby tract homes, they frequently are. A thermal camera reading during our estimate will show whether your west and south walls are radiating heat inward while your newly insulated attic holds temperature. The attic upgrade handles the roof load; dense-pack handles the wall load. We quote them separately so you can phase if needed, but we won’t pretend an attic job alone solves a whole-envelope problem. Written scope, no surprises.
We coordinate with Kirby’s active reroofing and HVAC crews regularly - it’s the dominant pattern in a city with no undeveloped land and no annexation room. When your roof is off or your air handler is swapped, the attic is already exposed. That’s the moment to seal and insulate, before new drywall or roofing closes access. Give us your contractor’s schedule and we’ll align our crew. We’ve done this on Duffek Street jobs, on Ackerman Avenue reroofs, and throughout the 78219 ZIP. The coordination costs you nothing; missing the window costs you access.
More than it helps a rural Bexar County home with open land to moderate temperatures. Kirby’s position deep inside San Antonio’s urban fabric, with no surrounding farmland, means atticles here run 140-150°F from May through October - 10-15 degrees hotter than exurban equivalents. High-density blown insulation with proper air sealing drops attic temperature to 110-120°F, which translates directly to reduced HVAC runtime and lower peak demand charges. The ROI calculation favors Kirby specifically because the problem is more severe here. We’ll show you before-and-after blower-door numbers from comparable Kirby jobs when you call (830) 402-5240 for your free estimate.
Ready for a written price? Call (830) 402-5240. A live person answers 24/7. Your estimate is free, your scope is written before any work starts, and your job closes with a Documented Photo Record and published blower-door numbers.
Written by Wes Okafor, Owner at Topside Attic Insulation Schertz, serving Kirby since 2016.