Insulation in Kirby, TX
Crawl space encapsulation and vapor barrier work in Kirby, TX addresses a problem most homeowners don’t see until it’s costly: moisture rising through slab-on-grade foundations into floor systems and indoor air. Because Kirby’s 1950s-1970s ranch homes were built with minimal sub-slab protection and the city’s fully developed, landlocked position intensifies summer humidity, we regularly find crawl spaces and pier foundations with wood moisture content above 20%. Call (830) 402-5240 for a free written estimate with upfront pricing.
Why Kirby Homes Are Different
Kirby is a fully built-out enclave of roughly one square mile, completely surrounded by San Antonio, with a housing stock almost exclusively from the 1950s through 1970s. These slab-on-grade ranch homes were built economically for working-class and military-adjacent families near Randolph AFB, and with zero undeveloped land remaining, every insulation job here is a retrofit.
The original fiberglass batts in Kirby attics have spent 50+ years in brutal heat. Attics routinely hit 140-150°F from May through October, and Kirby’s position deep inside San Antonio’s urban fabric intensifies the heat island effect with no surrounding farmland to moderate temperatures. Wall cavities are frequently un-insulated or under-insulated, a common oversight in fast-built tract construction of that era. This makes attic blow-in upgrades to current R-38/R-60 standards the dominant and highest-ROI service in this market. Because Kirby permit records skew heavily toward reroof and HVAC retrofits on the same aging housing, we coordinate with active reroofing crews to reach homeowners when attic insulation is already exposed.
Our Main Kirby Services
Most Kirby homeowners start with one of these three services, though we provide the full envelope line.
Attic Insulation in Kirby
Kirby’s 1,200-1,600 square foot ranch homes typically need 8-14 inches of additional blown insulation to reach current IECC standards. We remove the settled, heat-damaged original batts, seal the attic floor, then blow Owens Corning or Johns Manville fiberglass to R-38 or R-60. Every job includes before-and-after blower-door numbers. Attic Insulation in Kirby details the full process.
Spray Foam Insulation in Kirby
Closed-cell spray foam at 2-3 inches on Kirby’s pier-and-beam crawl space floors or rim joists stops both air and moisture intrusion, critical in Climate Zone 2’s humidity. Open-cell foam works for attic roof decks in homes with HVAC systems in the attic. We source Demilec and Icynene products with published R-values and no proprietary lock-in. Spray Foam Insulation in Kirby covers applications.
Blown-In Insulation in Kirby
Blown-in fiberglass or cellulose is the most cost-effective retrofit for Kirby’s accessible attics. We blow GreenFiber cellulose or Owens Corning fiberglass over a sealed attic floor, typically achieving R-38 in a single pass. The material fills irregular joist bays and covers top plates that batts miss. Blown-In Insulation in Kirby explains material selection.
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.
Crawl Space Encapsulation & Vapor Barrier in Kirby
Kirby’s 1950s-1970s slab-on-grade homes were built with minimal sub-slab moisture protection, and the city’s fully landlocked position inside San Antonio means summer humidity stays trapped with no open space for ventilation. We regularly find crawl spaces and pier foundations with wood moisture content above 20%, creating conditions for mold, rot, and indoor air quality problems that slab construction was supposed to prevent. Crawl Space Encapsulation & Vapor Barrier is often the first step before any insulation goes in.
Crawl Space Vapor Barrier
Signs you need it
Musty odors from floor registers, warped laminate flooring near exterior walls, or visible condensation on ductwork in pier-and-beam crawl spaces indicate ground moisture migration.
What it costs in Kirby
A 6-mil to 20-mil polyethylene vapor barrier installed over bare earth in a Kirby crawl space typically runs $1,200-$2,800 depending on square footage and seam-sealing requirements.
How we do it
We remove debris, grade the soil for drainage, lay overlapping polyethylene sheets with sealed seams, and mechanically fasten to walls or piers, then provide photos of the completed barrier.
Crawl Space Encapsulation
Signs you need it
Standing water after rain, insect activity in floor insulation, or fiberglass batts hanging wet from joists mean the crawl space is exchanging unconditioned, moist air with the home above.
What it costs in Kirby
Full encapsulation with sealed vapor barrier, closed-cell spray foam on rim joists, and mechanical dehumidification in Kirby typically ranges $4,500-$8,500 for homes under 2,000 square feet.
How we do it
We install a complete air and moisture barrier on floors and walls, seal all penetrations, condition the space with a dedicated dehumidifier, and deliver before-and-after moisture readings.
What Crawl Space Encapsulation & Vapor Barrier Costs in Kirby
| Item | Typical range in Kirby |
|---|---|
| Vapor barrier (6-20 mil, earth coverage only) | $1,200-$2,800 |
| Partial encapsulation (barrier + rim joist foam) | $3,200-$5,500 |
| Full encapsulation with dehumidification | $4,500-$8,500 |
Can crawl space work be done on Kirby’s slab-on-grade homes?
Most Kirby homes are slab-on-grade with no crawl space, but pier-and-beam additions and older sections near FM 78 do have accessible spaces. We assess the foundation type during our free estimate and recommend slab-edge sealing or interior drainage if no crawl space exists.
How long does crawl space encapsulation take in Kirby?
A typical vapor barrier installation completes in one day; full encapsulation with dehumidification requires two to three days. We provide a written schedule with the upfront price, and crews are background-checked and uniformed.
Radiant Barrier Installation in Kirby
Kirby’s attics routinely hit 140-150°F from May through October, and the city’s heat island position with no moderating open space makes radiant heat gain the dominant cooling load in these 1950s-1970s homes with dark shingle roofs. A properly installed radiant barrier can reduce attic surface temperatures by 20-35°F, dropping the demand on aging HVAC systems that were sized before current efficiency standards. Radiant Barrier Installation is particularly cost-justified here compared to suburban Bexar County neighbors with more tree cover or larger lots.
Attic Radiant Barrier
Signs you need it
AC running continuously after 2 p.m., ceiling registers blowing warm air, or upstairs rooms that never reach setpoint despite adequate insulation depth suggest radiant heat overwhelming the cooling system.
What it costs in Kirby
Radiant barrier foil stapled to attic rafters or laid over existing insulation in a typical 1,400-square-foot Kirby attic runs $1,100-$2,400 including labor and materials.
How we do it
We install perforated aluminum foil across rafter bottoms or truss chords, maintaining ventilation channels, and verify with infrared imaging that surface temperatures drop before we leave.
Radiant Barrier Roof Deck
Signs you need it
Dark shingles less than five years old with premature granule loss, or plans to reroof without addressing the thermal load, indicate the roof deck is absorbing and re-radiating excessive heat.
What it costs in Kirby
Radiant barrier applied directly to the roof deck during reroofing or as a retrofit spray coating in Kirby typically costs $1,800-$3,500 depending on roof complexity and access.
How we do it
We apply reflective coating or foil-faced sheathing to the roof deck underside, seal all seams, and document the installation with photos for the homeowner’s record.
What Radiant Barrier Installation Costs in Kirby
| Item | Typical range in Kirby |
|---|---|
| Attic radiant barrier (foil, rafter application) | $1,100-$2,400 |
| Radiant barrier roof deck application | $1,800-$3,500 |
| Radiant barrier with attic air sealing package | $2,200-$4,200 |
Does radiant barrier work with Kirby’s existing insulation?
Yes, radiant barrier complements rather than replaces insulation. In Kirby’s 50-year-old attics, we typically find R-11 batts degraded to effective R-8 or less; we air seal, add blown insulation to R-38, then install radiant barrier for the combined reduction in conductive and radiant heat gain.
Can radiant barrier be installed without removing my roof?
Absolutely. Most Kirby installations use foil stapled to rafter bottoms or laid over existing insulation. Roof deck application requires attic access, not shingle removal, though reroofing presents the optimal timing for integrated installation.
Insulation Removal & Replacement in Kirby
We regularly remove insulation contaminated by rodent activity, water damage from old roof leaks, or simple thermal breakdown, then replace to current IECC standards with documented before-and-after performance. Insulation Removal & Replacement follows our sealed-first protocol.
Attic Insulation Removal
Signs you need it
Insulation compressed below joist tops, visible water staining or mold on batts, or fiberglass that crumbles when touched indicates material past its functional life.
What it costs in Kirby
Removal and disposal of existing attic insulation in a typical Kirby ranch home runs $1.50-$3.00 per square foot, or $1,800-$4,200 for a 1,400-square-foot attic.
How we do it
We use HEPA-filtered extraction equipment, bag material on site, inspect decking for damage, and provide photos of the clean attic before any new insulation is specified.
Contaminated Insulation Removal
Signs you need it
Urine staining, rodent nesting material, or musty odors that persist after HVAC filter changes mean biological contamination requiring full removal and sanitization.
What it costs in Kirby
Contaminated insulation removal with attic sanitizing and deodorizing in Kirby typically adds $800-$1,500 to standard removal, for total project ranges of $2,600-$5,700.
How we do it
We remove all contaminated material, apply enzymatic sanitizer to decking and joists, install physical barriers at entry points, and document the clean condition before replacement begins.
What Insulation Removal & Replacement Costs in Kirby
| Item | Typical range in Kirby |
|---|---|
| Standard attic insulation removal (1,400 sq ft) | $1,800-$4,200 |
| Contaminated insulation removal + sanitizing | $2,600-$5,700 |
| Removal + replacement to R-38 with air sealing | $3,800-$7,500 |
Is it cheaper to add new insulation over old in Kirby?
Rarely. Kirby’s original batts are often moisture-compromised and compressed; burying them traps humidity and reduces new insulation effectiveness. We remove, inspect, seal, then install - the Haven Standard: sealed first, then insulated.
How do I know if my Kirby home has vermiculite?
Vermiculite in pre-1990 homes, especially near military housing, requires professional assessment. We do not disturb suspected vermiculite; if found, we refer to certified abatement and resume work after clearance. Call (830) 402-5240 for inspection.
Attic Air Sealing in Kirby
Kirby’s 1950s-1970s ranch homes were built before continuous air barriers were code, and decades of thermal cycling in 140°F attics have opened gaps at top plates, wiring penetrations, and can light housings that original construction left unsealed. We regularly measure 4,000-6,000 CFM50 on Kirby homes before sealing, dropping to 2,500-3,500 after - a reduction that makes any insulation added afterward perform to its rated R-value rather than losing effectiveness to wind washing. Attic Air Sealing is mandatory before we install any new insulation.
Top Plate & Penetration Sealing
Signs you need it
Dust streaks around ceiling registers, cobwebs concentrated at wall-ceiling joints, or rooms that stay uncomfortable despite adequate insulation depth indicate unsealed top plates and penetrations.
What it costs in Kirby
Sealing top plates, electrical penetrations, and plumbing stacks in a typical Kirby attic runs $800-$1,800 as a standalone service, or is bundled with insulation replacement.
How we do it
We use two-part polyurethane foam and fire-rated caulk to seal all top plate gaps, wire and pipe penetrations, and chase openings, then verify with blower-door testing.
Can Light & Duct Boot Sealing
Signs you need it
Can lights that flicker in high wind, conditioned air leaking into attic spaces around duct boots, or summer humidity spikes when the AC runs suggest failed or missing seals at these common failure points.
What it costs in Kirby
Sealing can light housings with fire-rated covers and mastic-sealing duct boots in Kirby typically costs $600-$1,400 depending on fixture count and duct configuration.
How we do it
We install pre-formed fire-rated enclosures over non-IC can lights, seal with fire-rated caulk, and apply mastic tape to all duct boot connections before testing.
What Attic Air Sealing Costs in Kirby
| Item | Typical range in Kirby |
|---|---|
| Top plate and penetration sealing | $800-$1,800 |
| Can light and duct boot sealing | $600-$1,400 |
| Full attic air sealing (comprehensive) | $1,400-$3,200 |
Can air sealing alone reduce my Kirby cooling bills?
Yes, typically 10-20% in Kirby’s leakiest homes. The blower-door test quantifies the improvement, and we provide the before-and-after numbers in writing. Most homeowners combine sealing with insulation upgrade for maximum return.
How long does attic air sealing take in Kirby?
A typical Kirby ranch home requires one day for comprehensive sealing; homes with extensive can light retrofits or complex duct systems may extend to two days. We provide a written schedule with the upfront price.
Wall Insulation in Kirby
Kirby’s fast-built 1950s-1970s tract homes frequently left wall cavities empty or with minimal insulation, an economy measure that current IECC standards would not permit. The slab-on-grade construction means walls are the primary thermal boundary after the attic, and uninsulated studs create thermal bridging that infrared imaging reveals as 10-15°F surface temperature differences on exterior walls. Wall Insulation retrofit is often the most impactful improvement after attic work is complete.
Drill & Fill Wall Insulation
Signs you need it
Exterior walls that are hot to the touch in summer, cold in winter, or rooms with two exterior walls that never maintain temperature indicate empty or under-filled cavities.
What it costs in Kirby
Drill-and-fill cellulose or fiberglass in Kirby’s 1,200-1,600 square foot ranch homes typically runs $2,200-$4,500 for all exterior walls, including patching and painting.
How we do it
We drill 2-inch holes at stud bay top and bottom, blow GreenFiber cellulose to density, seal holes with matching plugs, and provide photos of fill consistency via borescope.
Injection Foam Wall Insulation
Signs you need it
Air infiltration felt at outlets and baseboards, or walls that transmit neighborhood noise, suggest cavities with air gaps that fiber insulation cannot seal.
What it costs in Kirby
Injection foam in Kirby exterior walls typically costs $3,500-$6,500 for a complete home, with higher density and air-sealing performance than blown fiber.
How we do it
We inject slow-rise foam through exterior or interior holes, monitor expansion to prevent bowing, trim excess, and patch all access points to match existing finish.
What Wall Insulation Costs in Kirby
| Item | Typical range in Kirby |
|---|---|
| Drill-and-fill cellulose/fiberglass | $2,200-$4,500 |
| Injection foam (complete home) | $3,500-$6,500 |
| Interior wall soundproofing (select rooms) | $1,800-$3,800 |
Will drill-and-fill damage my Kirby home’s interior?
We drill from exterior where possible on brick or siding homes; for painted wood or stucco, interior access with professional patching minimizes visible disruption. We match texture and paint, included in the written scope.
Can you insulate walls without removing drywall in Kirby?
Yes, both drill-and-fill and injection foam are retrofit methods requiring only small access holes. For Kirby’s intact 1970s interiors, this preserves original finishes while bringing walls to modern performance.
Attic Cleaning & Rodent Proofing in Kirby
Kirby’s mature tree canopy, established neighborhoods, and 50-year-old construction with multiple roof penetrations create sustained rodent pressure on attics, while decades of accumulated debris, old insulation, and forgotten storage make these spaces hazardous to enter unprotected. We regularly find active infestations in original soffit construction with deteriorated screens, and the 140°F summer attic environment accelerates decomposition of any organic material left behind. Attic Cleaning & Rodent Proofing restores safe, usable space.
Attic Cleanout & Sanitizing
Signs you need it
Visible droppings on insulation, ammonia odors detectable at attic access, or stored items with gnaw marks indicate active infestation requiring professional cleanout before any insulation work.
What it costs in Kirby
Complete attic cleanout, HEPA vacuuming, and enzymatic sanitizing in a typical Kirby ranch attic runs $1,400-$3,200 depending on debris volume and contamination extent.
How we do it
We remove all debris and contaminated insulation, HEPA-vacuum surfaces, apply hospital-grade sanitizer, and provide photos of the cleaned space with a written condition report.
Rodent Proofing & Exclusion
Signs you need it
Scratching sounds in walls at dawn or dusk, new gnaw marks on attic access framing, or recurring infestation after previous trapping indicate entry points that exclusion alone can permanently close.
What it costs in Kirby
Comprehensive rodent exclusion with metal flashing, hardware cloth, and sealant at all identified entry points in Kirby typically costs $900-$2,200 with one-year revisit guarantee.
How we do it
We inspect roofline, soffits, vents, and foundation with borescope and ladder, install metal barriers at all active and potential entries, and document each sealed point with photos.
What Attic Cleaning & Rodent Proofing Costs in Kirby
| Item | Typical range in Kirby |
|---|---|
| Attic cleanout and sanitizing | $1,400-$3,200 |
| Rodent proofing and exclusion | $900-$2,200 |
| Combined cleanout + proofing + insulation replacement | $3,800-$7,500 |
Do you remove dead rodents from Kirby attics?
Yes, removal and sanitizing are part of our cleanout service. We locate carcasses with infrared and odor tracing, remove with proper PPE, and treat affected areas to eliminate biological hazard.
How do I know rodents won’t return after proofing?
We guarantee exclusion work for one year with free revisit if activity recurs. The key is metal barriers at gnaw points; foam and caulk alone fail. We show you every sealed entry in your photo record.
Home Energy Audit in Kirby
Kirby’s 1950s-1970s homes present a complex interaction of aging insulation, original single-pane windows, unsealed attics, and HVAC systems often replaced without addressing the envelope that loads them. A home energy audit isolates which improvements deliver the highest return in this specific house, rather than applying generic recommendations that may not match Kirby’s retrofit reality. Home Energy Audit provides the documented baseline for all our work.
Blower Door Test
Signs you need it
Unexplained high cooling bills, rooms that never reach temperature, or drafts despite closed windows indicate envelope leakage quantifiable only with pressurized testing.
What it costs in Kirby
A standalone blower-door test with written report in Kirby costs $350-$550; when bundled with thermal imaging and insulation inspection, typically $600-$900 total.
How we do it
We install a calibrated fan in an exterior door, depressurize to 50 Pascals, measure CFM50 leakage, and identify leak locations with smoke pencil and infrared correlation.
Thermal Imaging Inspection
Signs you need it
Visible temperature stripes on exterior walls after sunset, ice dam history on north slopes, or rooms with 5°F+ variation from thermostat reading indicate insulation gaps invisible to visual inspection.
What it costs in Kirby
Thermal imaging inspection of a typical Kirby ranch home, including attic, walls, and foundation, runs $400-$650 as a standalone service or bundled with blower-door testing.
How we do it
We scan all building surfaces with FLIR infrared camera during heating or cooling season, mark anomalies on floor plans, and correlate with visual inspection for definitive diagnosis.
What Home Energy Audit Costs in Kirby
| Item | Typical range in Kirby |
|---|---|
| Blower-door test with written report | $350-$550 |
| Thermal imaging inspection | $400-$650 |
| Comprehensive audit (blower door + thermal + insulation + duct) | $600-$950 |
Will a Kirby energy audit tell me which insulation to replace first?
Yes, the audit prioritizes improvements by cost-effectiveness for your specific home. In Kirby, attic air sealing and insulation replacement typically rank first; wall insulation and window replacement follow based on measured performance.
How long does a home energy audit take in Kirby?
A comprehensive audit requires 3-4 hours on site, with the written report and prioritized recommendations delivered within 48 hours. We schedule audits with live dispatch from our San Antonio office, with Kirby appointments typically available within one week.
Brands We Service in Kirby
We install and service materials from Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber with no proprietary lock-in, selecting products by measured performance for each Kirby home’s specific conditions. Common attic and wall stock is kept on hand for next-day starts after written approval. See our brands for full specifications.
Pricing for Insulation in Kirby, TX
| Service | Typical range in Kirby |
|---|---|
| Crawl space vapor barrier | $1,200-$2,800 |
| Crawl space full encapsulation | $4,500-$8,500 |
| Radiant barrier (attic) | $1,100-$2,400 |
| Radiant barrier (roof deck) | $1,800-$3,500 |
| Insulation removal (standard) | $1,800-$4,200 |
| Contaminated insulation removal | $2,600-$5,700 |
| Attic air sealing (comprehensive) | $1,400-$3,200 |
| Wall insulation (drill-and-fill) | $2,200-$4,500 |
| Wall insulation (injection foam) | $3,500-$6,500 |
| Attic cleanout and sanitizing | $1,400-$3,200 |
| Rodent proofing and exclusion | $900-$2,200 |
| Home energy audit (comprehensive) | $600-$950 |
Prices in Kirby run toward the higher end when attics contain active rodent contamination, when roof pitch exceeds 6:12 requiring specialized equipment, or when original construction used materials like vermiculite requiring abatement referral. Every job begins with a written price before any work starts - Haven Standard Clause 1 - and we provide free second opinions on any competing written estimate.
Neighborhoods We Serve in Kirby
Kirby’s compact, fully developed layout means our crews reach any address within 15 minutes of dispatch from our San Antonio office. These are representative neighborhoods where we regularly work:
- Kirby Manor
- Windfield
- Rolling Acres
- Kirby Terrace
- FM 78 corridor
Same-day estimates are typically available for Kirby calls received before noon.
Service Area - Cities Near Kirby
We serve Kirby and surrounding Bexar County communities including Schertz, TX, Cibolo, TX, Universal City, TX, and Selma, TX. Dispatch and scheduling are coordinated from our San Antonio office; all crews are background-checked, uniformed, and equipped for same-day blower-door testing.
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 About Insulation in Kirby
Kirby requires permits for structural modifications and HVAC changes but not for straightforward insulation retrofit in existing attics or walls. We handle all permit research as part of our written scope, and reroof-coordinated jobs already have permit coverage.
Our San Antonio dispatch coordinates Kirby appointments with typical next-day availability for estimates and 48-hour scheduling for most work. Emergency calls for active water intrusion or failed HVAC in extreme heat receive same-day priority.
Kirby has no undeveloped land and no new-construction pipeline; every job is a retrofit on aging housing with original insulation degraded by 50+ years of attic heat. This concentration means we understand the specific construction methods, common failure modes, and highest-ROI improvements for this exact housing stock.
Call (830) 402-5240 for a free written estimate with upfront pricing. A live person answers 24/7, and every Kirby job begins with a written price before any work starts.
What happens when you call
- 1A real person answersNo phone trees - talk to a local insulation pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3A background-checked tech heads outLicensed & insured, typically within the hour.
- 4You approve before work beginsNothing starts until you say go.
What Kirby Customers Say
"They air-sealed the attic floor before insulating and showed me the blower-door number before and after. The upstairs is finally the same temperature as downstairs."
- Marisol D."Turned up on time, protected the hallway, and the written scope matched what was actually done."
- Bruno S."The winter gas bill dropped by about a third. They had estimated a quarter, so they under-promised."
- Genevieve R.