Fast, Reliable Attic Insulation Across Kirby
Most attic insulation jobs in Kirby run $1,800-$4,200 for a full blow-in upgrade to R-38, and our crews typically book within 48 hours of your call. We dispatch from our San Antonio office and carry enough Owens Corning and GreenFiber stock to complete standard Kirby ranches in a single day. Call (830) 402-5240 for a written price before any work starts.
We know Kirby’s housing stock intimately: the 1950s-1970s slab-on-grade ranches off Ackerman Road and FM 78, the alley-load homes with narrow attic hatches, the original fiberglass batts that have spent fifty-plus summers baking at 140°F. Our Attic Insulation team treats every Kirby job as a retrofit with specific access challenges and a specific thermal failure pattern to solve.
Why Topside Attic Insulation Schertz Is Kirby’s Preferred Attic Insulation Company
We’ve sealed and insulated over 9,000 homes since 2016, and Kirby’s one-square-mile footprint means we return to the same streets repeatedly. Homeowners on Sterling Drive and Thompson Place have left reviews citing our blower-door documentation and the fact that we text technician names and arrival times. Our response time to Kirby is same-day or next-day for standard bookings; emergency calls reach a live person 24/7, no voicemail loop.
What separates us in Kirby specifically is our coordination with active reroof and HVAC crews. Because this city is fully built-out and landlocked by San Antonio, permit records show constant retrofit activity on the same aging housing cohort. When a Kirby homeowner’s roof comes off or their air handler gets swapped, their attic insulation is already exposed and disturbed. We work with those trade schedules so you’re not paying twice for attic access.
Every job closes with a Documented Photo Record and, on applicable work, before-and-after blower-door numbers. Under Haven Standard Clause 1, you get a written price, written scope, and written warranty before anyone lifts a tool. The 365-Day Done Right Promise applies to all completed work.
Our Attic Insulation Services in Kirby
Blown-In Attic Insulation
This is the dominant service in Kirby for a reason. The 1960s ranch homes that make up most of this city’s housing were built with 3-4 inches of fiberglass batt, often R-11 or less, compressed and moisture-wicked after decades in attic heat that routinely hits 140-150°F from May through October. We remove the collapsed batts, air-seal top plates and plumbing penetrations, install baffles at the soffits, then blow Owens Corning or GreenFiber fiberglass to R-38 or R-60 depending on your joist depth. The material fills irregular cavities and covers the bare spots batts always miss.
Attic Batt Insulation
We rarely recommend new batts for Kirby’s standard ranch stock, but they have a place in specific applications: knee walls in partial second-story additions, vertical gable ends, or when a homeowner needs to maintain walkable attic storage lanes. When we do use batts, we source from Johns Manville and install only after air sealing is complete. Blown-in remains the better thermal and economic choice for most Kirby attics.
Attic Insulation Top-Up
Some Kirby homes have had partial upgrades, maybe R-19 blown over original batts in the 1990s, now settled and uneven. A top-up adds new material to reach current code, but only after we verify what’s there. We pull core samples, check for moisture staining or rodent activity, and air-seal any penetrations that were missed the first time. Most Kirby top-ups run $1,200-$2,800 and take four to six hours.
Attic Insulation Replacement
When original batts have compressed to 2 inches, when there’s been roof leak saturation, or when previous insulation was installed without air sealing, we strip to the attic floor and start over. This is the full Kirby treatment: removal, deck cleaning, air sealing, baffles, blow-in to R-38 with radiant barrier backing. On a tight alley-load ranch off Ackerman Road in Kirby, our crew found a 1968 slab-on-grade home with original R-11 batts compressed to about 2 inches and a bare attic floor. We pulled the collapsed batts, air-sealed the top plates and plumbing penetrations, baffled the soffits, and blew in Owens Corning fiberglass to R-38-then backed the whole deck with a radiant barrier. The homeowner called two weeks later to say their August electric bill had dropped for the first time in years.
Attic Baffles & Ventilation Prep
Kirby’s older ranches often have soffit vents blocked by insulation or never baffled at all. Without proper intake ventilation, blown-in material creates wind-wash zones that strip heat right out of the insulation layer. We install propper or cardboard baffles at every soffit bay, verify exhaust venting at the ridge or gables, and document the airflow path in your photo record. This step is non-negotiable on every full replacement we do.
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.
Trusted Brands We Service in Kirby
We stock Owens Corning L77 loose-fill fiberglass and GreenFiber stabilized cellulose on every Kirby truck, with Johns Manville batts available for specific applications. No proprietary lock-in: we select material based on your attic’s moisture history, joist spacing, and whether we’re matching existing insulation or starting fresh. Because we carry inventory locally, most Kirby jobs don’t wait on material delivery.
Common Attic Insulation Problems We See in Kirby Homes
- Original batts compressed to uselessness. That 3-4 inches of 1960s fiberglass in your Kirby attic has likely settled to 2 inches or less, with an effective R-value below R-8. It was never enough for Climate Zone 2, and fifty years of 140°F summers finished it off.
- Moisture-wicked and disintegrated material. Kirby’s humidity, combined with attic air leaks carrying conditioned moisture upward, leaves batts that crumble when touched. We see this on almost every pre-1980 ranch we open.
- Unsealed top plates and can lights bleeding conditioned air. Fast-built tract construction skipped air sealing entirely. Your Kirby home’s attic floor is likely perforated with dozens of gaps, each one a chimney stack in reverse during cooling season.
- Disturbed insulation left by reroof or HVAC crews. Because Kirby has no undeveloped land, retrofit trades are constantly in these attics. Crews that don’t coordinate with insulation contractors compact, scatter, or remove material without replacing it.
Pricing for Attic Insulation in Kirby, TX
| Service | Typical Range in Kirby |
|---|---|
| Attic insulation top-up (to R-38) | $1,200 - $2,800 |
| Full removal + replacement to R-38 | $2,800 - $4,200 |
| Full removal + replacement to R-60 | $3,400 - $5,500 |
| Air sealing + baffles only (no insulation) | $800 - $1,600 |
| Radiant barrier installation | $1,000 - $2,200 |
What moves you within these ranges: attic square footage, current insulation condition, accessibility (standard scuttle versus narrow hatch or alley-load constraints), and whether we’re coordinating with an active reroof or HVAC schedule. Every Kirby job gets a written price before work starts, with no change orders unless you add scope. Bring us any competing written estimate; we provide a Free Second Opinion and will read it with you line by line.
We Also Serve Cities Near Kirby
Our crews work daily in Schertz, Cibolo, Universal City, and Selma, with dispatch coordinated from our San Antonio office. If you’re near the Kirby city limits on FM 78 or Selma Road, we likely cover your address. Call (830) 402-5240 to confirm.
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 - Attic Insulation in Kirby
Blown-in material fills the irregular joist bays and top-plate gaps that batts never seal in fast-built 1960s construction, and it achieves R-38 in a single pass without the compression points batts create. Your Kirby ranch was built quickly with uneven framing; blow-in conforms to that reality rather than fighting it. Call (830) 402-5240 for a written price on your specific attic.
Kirby’s position deep inside San Antonio’s urban fabric, with no surrounding farmland or open space to moderate temperatures, pushes attic peak heat higher and extends the cooling season by weeks compared to rural Bexar County. We spec higher-density blown material and prioritize radiant barrier backing here because the thermal load is measurably more severe. The payoff period on upgraded insulation is shorter in Kirby than in outlying areas because the baseline energy waste is greater.
Yes. We use reduced-diameter hose assemblies and portable blowers that fit through 22-inch scuttles, and our crews have worked dozens of alley-load ranches in Kirby with hatches in closets or garage ceilings. The material goes up dry and light; access constraints add time but don’t change the outcome. We’ll note any access limitation in your written scope and price before we start.
Absolutely, and this is the single highest-ROI timing window in Kirby’s market. Because this city is fully built-out with constant retrofit activity, your attic is already open and exposed during reroof or HVAC work. Scheduling insulation concurrently saves the cost of separate access, lets us air-seal before the new mechanicals or roofing go in, and means you’re not living with disturbed, compacted batts after the other crew leaves. We coordinate directly with your roofer or HVAC contractor on timing.
We primarily install Owens Corning L77 loose-fill fiberglass and GreenFiber stabilized cellulose on Kirby jobs, with material selected based on your attic’s moisture history and whether we’re matching existing insulation. Both products are stocked locally; no waiting on delivery. Call (830) 402-5240 for a Free Second Opinion if you’ve received another written estimate specifying different material.
Ready for a written price on your Kirby attic? Call (830) 402-5240. A live person answers 24/7. We’ll schedule a technician to measure your attic, assess your current insulation, and deliver a flat written price with scope and warranty before any work starts. Estimates are free. The 365-Day Done Right Promise applies to every job.
Written by Wes Okafor, Owner at Topside Attic Insulation Schertz, serving Kirby since 2016.