Insulation in Alamo Heights, TX
Most crawl spaces in Alamo Heights were built between the 1920s and 1960s with zero vapor protection and minimal foundation sealing, which means moisture, mold, and wood rot are routine findings in the pier-and-beam homes that dominate the 78209 zip code. Our crews start every Crawl Space Encapsulation & Vapor Barrier job with a written price and a full inspection, because what looks like a simple moisture problem often traces back to unsealed duct boots or missing top plates in the attic above. If you’re seeing musty odors, sagging floors, or condensation under your home, call (830) 529-7780 - we answer live, 24/7.
Why Alamo Heights Homes Are Different
Alamo Heights is an independent municipality completely surrounded by San Antonio, with its own permit and inspection process - contractors who assume San Antonio jurisdiction applies here are wrong, and permits must be pulled through Alamo Heights City Hall. The city’s housing stock is almost entirely pre-1970 custom construction: brick exteriors, plaster-and-lath interior walls, pier-and-beam and early slab foundations, with many homes dating to the 1930s-1950s built under minimal or nonexistent insulation standards.
This matters for every job we do. Original insulation, when present at all, is often settled fiberglass batts or early cellulose - occasionally vermiculite in the oldest attics. The affluent, preservation-minded ownership means retrofits must work around irreplaceable original features rather than replace them. Summer attic temperatures here routinely exceed 150°F, and the February 2021 Winter Storm Uri exposed how catastrophically underprepared 1940s-1950s brick homes with minimal wall insulation are during hard freezes. Many older two-story homes along Broadway-corridor streets like Tuxedo and Fresno have uninsulated kneewall cavities and balloon-framed walls that create thermal bypass channels straight from roofline to living space - a failure mode rarely seen in newer San Antonio suburbs but a recurring discovery for crews working here.
Our Main Alamo Heights Services
Alamo Heights homeowners call us most often for attic work and dense-pack retrofits that preserve original plaster walls. Here is what each service involves in this market.
Attic Insulation in Alamo Heights
Attic jobs in Alamo Heights almost always begin with air sealing - top plates, can lights, duct boots, and penetrations - before any insulation goes in, because blowing material over an unsealed attic floor in a 150°F summer environment is throwing money away. We document every job with before-and-after blower-door readings and a photo record. For homes with kneewall cavities or balloon framing, we design custom baffles and blocking to stop thermal bypass without disturbing interior plaster. Attic Insulation in Alamo Heights.
Spray Foam Insulation in Alamo Heights
Spray foam is our go-to for wall retrofits in Alamo Heights because it allows us to insulate plaster-and-lath walls through small-diameter drill penetrations rather than gutting rooms. We specify open-cell Icynene or Demilec products for above-grade applications and closed-cell formulations for rim joists and crawl spaces, matched to the moisture conditions we find. Every installation includes a written scope, documented photos, and the 365-Day Done Right Promise. Spray Foam Insulation in Alamo Heights.
Blown-In Insulation in Alamo Heights
Blown-in cellulose from GreenFiber and Owens Corning fiberglass are our standard attic fill materials for Alamo Heights homes with accessible attics and intact existing structure. We dense-pack wall cavities in older homes where batt removal would damage plaster, achieving R-13 to R-15 in 2×4 walls without interior demolition. All blown-in work follows complete air sealing and includes blower-door verification. Blown-In Insulation in Alamo Heights.
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 Alamo Heights
The pier-and-beam homes that define Alamo Heights were built with vented crawl spaces and no vapor barriers, leaving floor joists and subflooring exposed to Central Texas humidity and seasonal groundwater fluctuation. Our Crawl Space Encapsulation & Vapor Barrier crews find rot, mold, and sagging floors on roughly half the inspections we perform in the 78209 zip code - problems that attic insulation alone cannot fix because the building envelope fails at ground level first.
Crawl Space Vapor Barrier
Signs you need it
Standing water after rain, white mineral deposits on block walls, or a persistent musty smell rising through floor registers in older homes along Castano or Patterson.
What it costs in Alamo Heights
A 6-mil to 20-mil vapor barrier installation for a typical 1,200-square-foot crawl space runs $1,800-$3,400 in Alamo Heights, with thicker mil ratings and full seam sealing at the higher end.
How we do it
We remove debris, grade the soil surface, lay overlapping polyethylene sheets with sealed seams, and mechanically fasten to foundation walls to create a continuous moisture break.
Crawl Space Encapsulation
Signs you need it
Condensation on ductwork, warped hardwood floors, or HVAC systems that run constantly in summer because cool supply air is warming in a humid crawl space.
What it costs in Alamo Heights
Full encapsulation with closed-cell spray foam on walls, sealed vapor barrier, and mechanical dehumidification typically ranges $4,500-$8,200 for Alamo Heights pier-and-beam homes.
How we do it
We seal foundation vents, apply closed-cell foam to walls and rim joists, install a reinforced vapor barrier sealed to walls, and add a condensate-pumped dehumidifier with remote monitoring capability.
What Crawl Space Encapsulation & Vapor Barrier Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Vapor barrier only (6-20 mil) | $1,800 - $3,400 |
| Partial encapsulation (walls + barrier) | $3,200 - $5,800 |
| Full encapsulation with dehumidifier | $4,500 - $8,200 |
How long does crawl space encapsulation take in Alamo Heights?
Most Alamo Heights pier-and-beam homes require two to four working days for full encapsulation, depending on access clearance and whether we discover rot requiring sistered joists. We pull permits through Alamo Heights City Hall before starting, so add three to five business days for approval.
Will encapsulation fix my sagging floors?
Encapsulation stops the moisture that causes sagging, but structural repairs require a separate scope - we document joist condition with photos and provide a written price for any carpentry before proceeding. Call (830) 529-7780 for an inspection; estimates are free.
Radiant Barrier Installation in Alamo Heights
Summer attic temperatures in Alamo Heights routinely exceed 150°F, and the dark shingle roofs on 1940s-1960s brick homes absorb radiant heat that conducts straight through undersized or missing attic insulation into living spaces below. Our Radiant Barrier Installation crews measure roof deck temperatures above 170°F in July, then watch interior cooling loads drop 15-25% after proper radiant barrier and ventilation pairing - documented with before-and-after blower-door and thermal imaging records.
Attic Radiant Barrier
Signs you need it
Second-story rooms that stay hot past midnight, asphalt shingles curling prematurely, or AC units that cannot maintain setpoint on August afternoons.
What it costs in Alamo Heights
Foil-faced radiant barrier draped over attic rafters or stapled to roof decking runs $1.20-$2.10 per square foot in Alamo Heights, with most homes falling between $1,800 and $3,400 total.
How we do it
We install perforated aluminum foil with proper air gaps, avoid compressing against roof decking, and verify with thermal imaging that surface temperatures drop before we leave.
Radiant Barrier & Ventilation
Signs you need it
Attic fan motors that burn out annually, soffit vents blocked by insulation, or ridge vents that were never cut in during a prior re-roof.
What it costs in Alamo Heights
Combined radiant barrier with balanced intake and exhaust ventilation correction typically ranges $2,800-$5,200 for Alamo Heights homes with complex rooflines or multiple dormers.
How we do it
We calculate net free ventilation area, clear soffit chokes, install baffles to maintain airflow paths, and pair with radiant barrier so the attic becomes a ventilated buffer zone rather than a heat sink.
What Radiant Barrier Installation Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Radiant barrier (foil, attic install) | $1,800 - $3,400 |
| Radiant barrier with ventilation correction | $2,800 - $5,200 |
| Premium roof-deck spray-applied barrier | $3,500 - $6,800 |
Does radiant barrier work with existing insulation?
Yes - radiant barrier reduces radiant heat gain that passes through insulation, so it complements rather than replaces your existing R-value; we assess current depth and condition before recommending the pairing.
Can you install radiant barrier without entering the house?
Attic access is required for quality installation, but we coordinate with homeowners who prefer minimal contact - our technicians wear boot covers, mask, and text arrival times so you know exactly when we are on site.
Insulation Removal & Replacement in Alamo Heights
Alamo Heights attics contain some of the oldest insulation we encounter in the San Antonio metro - settled fiberglass from the 1970s, rodent-contaminated cellulose, and occasionally vermiculite in pre-1960 homes that requires specialized handling. Our Insulation Removal & Replacement crews start with a hazard assessment, because disturbing unlabeled legacy material without testing is a liability we do not accept; we document what we find with photos before touching anything.
Contaminated Insulation Removal
Signs you need it
Droppings visible in attic insulation, urine staining on ceiling drywall, or a sharp ammonia smell that intensifies when HVAC runs in heating mode.
What it costs in Alamo Heights
Contaminated insulation removal with HEPA containment, bagging, and disposal runs $2.50-$4.50 per square foot in Alamo Heights, with most attics between $2,200 and $4,800.
How we do it
We establish negative air pressure, remove material in sealed bags, apply EPA-registered sanitizer to substrate, and provide photo documentation of clean decking before any new insulation is considered.
Vermiculite & Old Insulation Removal
Signs you need it
Pebbly gray-brown granules that do not resemble modern fiberglass or cellulose, particularly in homes built before 1960 near Broadway or Alamo Heights Boulevard.
What it costs in Alamo Heights
Vermiculite removal with third-party asbestos testing and abatement-protocol disposal ranges $5,500-$11,000 for a typical Alamo Heights attic, depending on volume and access constraints.
How we do it
We collect samples for lab analysis, halt work if asbestos is detected, and coordinate with licensed abatement contractors under a written scope that separates our insulation work from hazardous material handling.
What Insulation Removal & Replacement Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Standard insulation removal (non-hazardous) | $1,400 - $3,200 |
| Contaminated insulation removal | $2,200 - $4,800 |
| Vermiculite removal with abatement protocol | $5,500 - $11,000 |
How do I know if my old insulation is hazardous?
We photograph samples and recommend lab testing for any material we cannot positively identify as modern fiberglass, cellulose, or mineral wool - never disturb unknown legacy insulation yourself. Call (830) 529-7780 for a no-cost assessment.
Can you remove insulation without damaging my plaster ceilings?
Attic removal does not touch interior plaster; we work entirely from above, with plywood walkboards to distribute weight across joists and protect your finished spaces below.
Attic Air Sealing in Alamo Heights
The balloon-framed walls and kneewall cavities common in Alamo Heights homes along Tuxedo, Fresno, and Castano create thermal bypass channels that bypass any insulation you add until they are sealed. Our Attic Air Sealing protocol - the foundation of every job we do - starts with a blower-door test to quantify exactly how much conditioned air your envelope is losing, then targets the leaks that matter most for this climate.
Top Plate & Penetration Sealing
Signs you need it
Dust streaks around ceiling light fixtures, cold drafts in exterior walls during winter, or rooms that never reach thermostat setpoint despite adequate insulation depth.
What it costs in Alamo Heights
Comprehensive top plate and penetration sealing for a typical Alamo Heights home runs $1,800-$3,400, with complex balloon-framed structures at the higher end due to extended linear footage.
How we do it
We foam-seal all top plates where interior walls meet exterior framing, caulk wire and pipe penetrations, and install fire-rated collars where required - then verify with a second blower-door test.
Can Light & Duct Boot Sealing
Signs you need it
Condensation on can light trim in summer, attic air blowing from supply registers when the system is off, or hot attic air drafting down interior walls.
What it costs in Alamo Heights
Sealing accessible can lights with fire-rated covers and mastic-sealing duct boots typically adds $800-$1,800 to an attic air sealing scope in Alamo Heights homes.
How we do it
We install pre-formed fire-rated enclosures over IC and non-IC cans, seal with high-temperature caulk, and apply mastic - not tape - to all duct boot connections for permanent closure.
What Attic Air Sealing Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Basic attic air sealing (top plates, penetrations) | $1,200 - $2,400 |
| Comprehensive sealing with blower-door verification | $1,800 - $3,400 |
| Full sealing with can lights and duct boots | $2,600 - $5,200 |
Why do you seal before insulating?
Insulation does not stop air movement - it only slows conductive heat transfer - so blowing material over leaky attic floors creates a filter that traps dust and loses R-value to wind washing; we seal first, insulate second, and prove the result with numbers.
How much does air sealing save on energy bills?
Alamo Heights homeowners with pre-1970 construction typically see 15-30% reduction in heating and cooling load after comprehensive attic air sealing, with payback periods of three to six years depending on current energy rates and HVAC efficiency.
Wall Insulation in Alamo Heights
The plaster-and-lath walls in Alamo Heights homes were built with empty stud cavities or minimal rock wool, leaving occupants exposed to summer heat gain and winter freeze risk - a vulnerability the 2021 Winter Storm Uri made painfully visible. Our Wall Insulation approach for this market uses injection foam and dense-pack techniques that fill cavities through exterior or interior drill penetrations without destroying irreplaceable original finishes.
Injection Foam Wall Insulation
Signs you need it
Exterior walls that radiate heat in summer, interior wall surfaces below 60°F in January, or rooms that require space heaters despite central HVAC operation.
What it costs in Alamo Heights
Open-cell injection foam for standard 2×4 stud walls runs $3.50-$6.50 per square foot in Alamo Heights, with most whole-home retrofits between $4,500 and $9,200 depending on wall area and access.
How we do it
We drill 5/8-inch holes at stud-bay intervals, inject slow-rise foam that fills without bowing lath, patch with matching plaster or paint-ready compound, and verify fill completeness with thermal imaging.
Drill & Fill Wall Insulation
Signs you need it
Knob-and-tube wiring still active in walls, irregular stud spacing from 1920s construction, or homeowner preference for cellulose over foam due to chemical sensitivity concerns.
What it costs in Alamo Heights
Dense-pack cellulose drill-and-fill for Alamo Heights homes with plaster walls typically ranges $2.80-$5.20 per square foot, with hand-mixed plaster patching adding $400-$800 for color-matched finishes.
How we do it
We remove exterior siding courses or drill interior plaster, dense-pack GreenFiber cellulose to 3.5 pounds per cubic foot to prevent settling, and patch with period-appropriate materials approved by the homeowner.
What Wall Insulation Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Drill-and-fill cellulose (per sq ft) | $2.80 - $5.20 |
| Injection foam (open-cell, per sq ft) | $3.50 - $6.50 |
| Whole-home wall retrofit (typical range) | $4,500 - $9,200 |
Will drill-and-fill damage my plaster walls?
We minimize plaster disturbance by drilling at baseboard or crown molding lines where possible, and our patching includes hand-mixed plaster for historic homes - not quick-set drywall compound that cracks differently.
Can you insulate walls with knob-and-tube wiring present?
Active knob-and-tube requires electrical evaluation first - we will not insulate walls containing uninspected vintage wiring because both foam and cellulose can create fire hazards if conductors are deteriorated; we coordinate with licensed electricians when needed.
Attic Cleaning & Rodent Proofing in Alamo Heights
Mature oak canopy and established neighborhoods in Alamo Heights support robust squirrel, rat, and raccoon populations that exploit construction gaps in pre-1960 homes to nest in attics, contaminating insulation and compromising air quality. Our Attic Cleaning & Rodent Proofing crews find active infestations in roughly one-third of the older homes we inspect, with entry points often hidden behind gutter lines or through rotted fascia on second stories.
Rodent Proofing & Exclusion
Signs you need it
Scratching sounds in walls at dawn or dusk, gnawed PVC vent pipes in the attic, or droppings concentrated near eave returns and chimney shoulders.
What it costs in Alamo Heights
Comprehensive rodent exclusion with one-way doors, gap sealing, and metal flashing typically runs $1,400-$3,200 for Alamo Heights homes, with steep-pitch second stories and ornate cornice details at the higher end.
How we do it
We install one-way exit devices on active entry points, seal all gaps larger than 1/4 inch with stainless steel mesh and polyurethane sealant, and provide a written map of every location addressed.
Attic Sanitizing & Decontamination
Signs you need it
Visible urine staining on attic decking, a persistent organic odor that recurs after standard cleaning, or HVAC return air drawing from contaminated attic space through bypass leaks.
What it costs in Alamo Heights
Attic sanitizing with enzyme treatment, HEPA vacuuming, and fogged disinfectant runs $1,800-$3,800 in Alamo Heights, with full decking replacement adding $2,200-$4,600 if rot is present.
How we do it
We remove contaminated insulation, HEPA-vacuum all surfaces, apply enzyme digesters that break down organic material at the molecular level, and fog with EPA-registered disinfectant before any new material is installed.
What Attic Cleaning & Rodent Proofing Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Rodent exclusion (sealing, one-way doors) | $1,400 - $3,200 |
| Attic sanitizing and decontamination | $1,800 - $3,800 |
| Full attic restoration (cleaning + new insulation) | $4,200 - $8,600 |
How do rodents get into Alamo Heights attics?
Squirrels leap from oak branches to rooflines, rats climb downspouts and exploit construction gaps in ornate cornice details, and raccoons tear through rotted fascia - we identify every species-specific entry route during inspection.
Will rodents come back after you seal?
Our exclusion work carries the 365-Day Done Right Promise - if rodents re-enter through any location we sealed, we return and correct it at no charge; we also identify landscaping and tree-trimming needs that reduce future access.
Home Energy Audit in Alamo Heights
A Home Energy Audit in Alamo Heights reveals what decades of incremental repairs and additions have concealed - balloon-framed walls that bypass insulation, ductwork running through 150°F attics, and combustion appliances backdrafting because the envelope is too loose or suddenly too tight. Our Home Energy Audit protocol, developed for pre-1970 housing stock, documents every finding with photos, blower-door numbers, and thermal images so you can prioritize investments by actual cost-effectiveness rather than guesswork.
Blower Door Test
Signs you need it
Rooms that never reach temperature, excessive dust even with new filters, or a recent energy bill spike that does not correlate with weather or rate changes.
What it costs in Alamo Heights
A standalone blower-door test with written report runs $350-$650 in Alamo Heights; when bundled with thermal imaging and combustion safety testing, the full audit ranges $550-$950.
How we do it
We install a calibrated fan in an exterior door, depressurize the house to 50 Pascals, and measure CFM50 - the cubic feet per minute of air leakage - to establish a baseline for improvement tracking.
Thermal Imaging Inspection
Signs you need it
Cold spots on interior walls in winter, hot ceiling patches in summer, or suspicion that prior insulation work was incomplete in kneewall or vaulted ceiling areas.
What it costs in Alamo Heights
Thermal imaging as part of a comprehensive audit adds $200-$400 to the base blower-door test, or $450-$750 as a standalone inspection focused on specific problem areas.
How we do it
We scan with FLIR cameras during blower-door depressurization to make air leakage visible as temperature differentials, then mark findings on floor plans for reference during repair scoping.
What Home Energy Audit Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Blower-door test with written report | $350 - $650 |
| Full home energy audit (blower door + thermal + combustion) | $550 - $950 |
| Thermal imaging inspection (standalone) | $450 - $750 |
What does a home energy audit include in Alamo Heights?
Our full audit includes blower-door testing, thermal imaging, combustion appliance zone testing, insulation depth verification, and duct leakage assessment - delivered as a written report with prioritized recommendations and projected cost-benefit for each measure.
Can I use audit results for CPS Energy rebates?
Yes - we format our reports to meet CPS Energy Home Efficiency Program documentation requirements, and we note which recommended measures qualify for current rebate schedules so you can stack incentives with our written scope.
Brands We Service in Alamo Heights
We install Owens Corning fiberglass, GreenFiber cellulose, Icynene open-cell spray foam, and Demilec closed-cell formulations - sourced through standard distribution, not proprietary lock-in, so you get material matched to your home’s conditions rather than a one-product-fits-all approach. Most Alamo Heights jobs can be scheduled within one to two weeks of written approval. our brands
Pricing for Insulation in Alamo Heights, TX
| Service | Typical range in Alamo Heights |
|---|---|
| Crawl space vapor barrier | $1,800 - $3,400 |
| Full crawl space encapsulation | $4,500 - $8,200 |
| Radiant barrier installation | $1,800 - $3,400 |
| Radiant barrier with ventilation | $2,800 - $5,200 |
| Standard insulation removal | $1,400 - $3,200 |
| Contaminated insulation removal | $2,200 - $4,800 |
| Vermiculite removal | $5,500 - $11,000 |
| Attic air sealing (comprehensive) | $1,800 - $3,400 |
| Wall insulation (injection foam, whole home) | $4,500 - $9,200 |
| Rodent exclusion | $1,400 - $3,200 |
| Attic sanitizing | $1,800 - $3,800 |
| Full home energy audit | $550 - $950 |
Prices in Alamo Heights run higher than outer San Antonio suburbs when plaster patching, custom scaffold access, or Alamo Heights City Hall permit fees apply - we disclose every line item in your written price before any work starts, with no add-ons after signature. The Haven Standard: flat price, written scope, written warranty, always.
Neighborhoods We Serve in Alamo Heights
Our crews work throughout the 78209 zip code and adjacent Alamo Heights addresses, with dispatch coordinated from our San Antonio office and typical arrival within 30-45 minutes for scheduled appointments. These are the neighborhoods where we most commonly find the pre-1970 construction details that define our approach.
- Olmos Park Terrace
- Terrell Hills adjacent
- Broadway corridor (Tuxedo, Fresno, Castano)
- Alamo Heights Boulevard historic district
- Patterson area pier-and-beam homes
Service Area - Cities Near Alamo Heights
We serve Alamo Heights directly and coordinate scheduling for surrounding communities from our San Antonio office. Homeowners in Boerne, TX, Fair Oaks Ranch, TX, Scenic Oaks, TX, and Helotes, TX can request the same building-envelope service line, written pricing, and documented photo records that Alamo Heights homeowners receive.
Serving Alamo Heights, TX - Our Local Coverage Area
We’re based in the Alamo Heights 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 Alamo Heights
Yes - Alamo Heights is an independent municipality with its own permit and inspection process, separate from San Antonio; we pull all required permits through Alamo Heights City Hall before starting work, and the cost is included in your written price.
We answer calls live 24/7 and typically schedule inspections within 48 hours for Alamo Heights addresses; emergency water intrusion or compromised envelope situations get same-day assessment when conditions warrant.
Our protocols for Alamo Heights homes assume irreplaceable finishes - we use small-diameter drill penetrations, plaster-matching compounds, and walkboards that distribute weight across joists rather than concentrating it on lath; photo documentation shows exactly what we touched and how we left it.
Ready to see what your home’s building envelope is actually doing? Call (830) 529-7780 for a free estimate. We’ll provide a written price before any work starts, documented photos when we finish, and before-and-after blower-door numbers on every air-sealing job so you can verify the performance you paid for. The Haven Standard: Have it in writing.
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 Alamo Heights Customers Say
"They photographed rodent damage in the old insulation that we had no idea about, and priced the exclusion work separately so we could decide."
- Harriet N."Crawl space encapsulation done properly. Photographs of the vapour barrier at every seam, and the damp smell in the hallway is gone."
- Ainsley P."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.