Fast, Reliable Attic Insulation Across Kirby
Most attic insulation jobs in Kirby run $1,800-$4,200 depending on whether we’re topping off existing material or tearing out degraded 1960s fiberglass and starting fresh. Our crews are typically on-site in Kirby within 24-48 hours of your call, and dispatch is coordinated from our San Antonio office. Call (830) 549-6646 for a written price before any work starts.
Kirby’s a unique market for us. It’s a fully built-out enclave surrounded on all sides by San Antonio, with almost no vacant land left to build on. That means every attic insulation job we do here is a retrofit on a home built between 1950 and 1975, before modern energy codes existed. We don’t pull new-construction permits in Kirby; we pull out mouse-tunneled, compressed fiberglass batts and put in something that actually works.
Why Topside Attic Insulation Seguin Is Kirby’s Preferred Attic Insulation Company
We’ve sealed and insulated more than 9,000 homes since 2016, and Kirby’s older housing stock keeps our crews busy year-round. The 365-Day Done Right Promise applies to every job, backed by a written scope and written warranty delivered before anyone lifts a tool.
Our Kirby customers tend to find us after they’ve already gotten one quote elsewhere. We offer a Free Second Opinion on any written estimate; bring us a competing quote and we’ll read it with you line by line. Under Haven Standard Clause 1, you get a flat price, written scope, and written warranty before work starts - no exceptions.
Response time to Kirby is typically same-day or next-day for estimates, with crews often starting work within 48 hours. Every visit includes a Documented Photo Record, and on applicable jobs we publish before-and-after blower-door numbers so you can verify the air-sealing result in a single figure.
Calls are answered by a live person 24/7. No voicemail loops, no callback windows measured in business days.
Our Attic Insulation Services in Kirby
Attic Insulation Replacement
This is the bread-and-butter scope in Kirby. On a 1962 single-story home off Kirby’s eastern side, we pulled out original Owens Corning fiberglass batts that were compressed, mouse-tunneled, and reading near R-6 in the open attic bays. We ran baffles at the soffit vents to restore airflow, then blew in GreenFiber cellulose to bring the flat ceiling to current Texas code. The homeowner noticed the May cooling bill drop noticeably and the attic stopped radiating heat through the ceiling by mid-afternoon. Most full tear-outs and replacements in Kirby run $2,800-$4,200 for a typical 1,200-1,600 square foot single-story home.
Attic Insulation Top-Up
Sometimes the existing material is salvageable. If your original fiberglass batts are still reasonably intact, not compressed below half their original thickness, and show no sign of rodent activity, we can air-seal the attic floor first - top plates, can lights, plumbing and electrical penetrations - then blow new material over the top. In Kirby, this is less common than full replacement because the age of the housing stock works against it. When it applies, a top-up runs $1,800-$2,800. Our Attic Insulation team will tell you honestly which scope fits your attic.
Attic Batt Insulation
We install new fiberglass or mineral wool batts when the attic configuration calls for it - knee walls, vertical gable ends, or areas where blown material won’t stay put. In Kirby’s low-slope ranch roofs, batt installation is sometimes necessary in tight quarters near the eaves where a hose won’t reach. We source batts from Owens Corning and Johns Manville, cut to fit without compression gaps, and document the installation with photos.
Attic Baffles & Ventilation Prep
This is non-negotiable in Kirby. Pre-code attic ventilation is often undersized or completely blocked by insulation piled over soffit vents. Before we blow anything new, we install baffles - cardboard or foam channels that keep the vent path open from soffit to ridge - so 150°F summer air can exhaust instead of pressing against your ceiling deck. Without this step, new insulation becomes a dam, not a solution. Baffles and ventilation prep add $400-$800 to most Kirby scopes.
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 don’t lock you into proprietary products. Our materials come from Owens Corning, Johns Manville, GreenFiber, and Demilec, sourced through regional distributors with San Antonio-area inventory. For Kirby jobs, this means no multi-week waits for specialty material. We stock standard cellulose, fiberglass, and open-cell foam densities that match the retrofit reality of 1950s-1970s homes: flat ceilings, limited attic height, and the need to work around existing HVAC ducts and electrical runs.
Common Attic Insulation Problems We See in Kirby Homes
- Original 1960s fiberglass batts compressed and rodent-tunneled, sitting at R-6 to R-8 in attic bays. These batts were installed before modern energy codes and have settled, been walked on by homeowners and technicians, and tunneled through by rodents over six decades. They no longer insulate effectively and often harbor odors and allergens.
- Pier-and-beam construction leaves an exposed, under-insulated crawl space that pulls heat and humidity up into the living space. Many Kirby homes sit on pier-and-beam foundations with minimal or no crawl space insulation. Attic work alone won’t fix the stack effect; warm, humid air rises from below while hot attic air presses from above.
- Pre-code attic ventilation is undersized or blocked by insulation piled over soffit vents. Original builders often skipped baffles entirely, and decades of homeowner-added insulation has buried the vent openings. Trapped 150°F summer air superheats the ceiling deck and radiates into living spaces until late evening.
- February 2021 Winter Storm Uri freeze damage to poorly insulated pipes and attic bypasses. The sustained cold exposed every air leak and under-insulated cavity in Kirby’s older homes. Homeowners who’d ignored their attics suddenly faced frozen pipes, ice dams in valleys, and four-figure heating bills.
Pricing for Attic Insulation in Kirby, TX
Here’s what most Kirby homeowners pay, based on actual jobs we’ve completed in the enclave:
| Service | Typical Range |
|---|---|
| Attic Insulation Top-Up (air seal + blow over existing) | $1,800 - $2,800 |
| Attic Insulation Replacement (tear-out, air seal, new material) | $2,800 - $4,200 |
| Attic Baffles & Ventilation Prep | $400 - $800 |
| Crawl Space Encapsulation (pier-and-beam homes) | $2,200 - $3,800 |
| Full Home Energy Audit with Blower-Door Test | $350 - $500 |
What moves you within these ranges: attic square footage, whether we need to remove existing material, accessibility (low-slope ranch roofs take longer), and whether the home needs crawl space work to complement the attic. Every job begins with a written price - no work starts without it. Call (830) 549-6646 for your exact number; estimates are free.
We Also Serve Cities Near Kirby
Our crews work throughout the San Antonio metro corridor. If you’re just outside Kirby, we also provide Attic Insulation in Kirby and surrounding areas including Seguin, New Braunfels, Cibolo, and Schertz. Same written-price standard, same documented photo record, same 365-Day Done Right Promise.
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
In Kirby, the old material usually has to come out first. The original fiberglass batts in these 1950s-1970s homes are typically compressed to half their original thickness, tunneled by rodents, and reading R-6 to R-8. We inspect during the estimate and will show you photos of what we find. If the existing material is clean and reasonably intact, a top-up may work; otherwise, we quote tear-out and replacement. Call (830) 549-6646 and we’ll give you a straight answer after seeing the attic.
Because warm, humid air rises. Many Kirby homes are pier-and-beam with little or no crawl space insulation. You can have a perfectly insulated attic and still feel drafts, humidity, and temperature swings as air pulls up from below. We often pair attic work with crawl space encapsulation or vapor barrier installation so the building envelope is addressed as a system, not a single surface.
Poorly. Original Kirby homes were built without baffles, and decades of insulation additions have buried soffit vents. Before we install any new insulation, we clear and protect the vent path with baffles. Without this step, blown cellulose or foam would block airflow, trap 150°F air against the deck, and potentially cause moisture problems. Baffles and ventilation prep are standard on our Kirby replacement scopes.
Essentially no. Kirby is landlocked with no vacant lots left for new development. Our Kirby work is 100% existing-home retrofit - tear-out of degraded material, air sealing, and installation of new insulation in homes built 50 to 70 years ago. We have never pulled a new-construction permit in Kirby.
GreenFiber cellulose blown to R-38 or R-49 is the most common choice for Kirby’s flat-ceiling ranches. It fills irregular cavities around ducts and wiring, and its density helps with both thermal performance and sound dampening during summer rain on the roof deck. In very tight attics with limited headroom, we sometimes use Johns Manville fiberglass batts in the eave areas where a blower hose won’t reach. We’ll recommend the right material after measuring your specific attic.
Written by Wes Okafor, Owner at Topside Attic Insulation Seguin, serving Kirby and the San Antonio metro since 2016.