Insulation in Alamo Heights, TX
Crawl space encapsulation and vapor barrier installation in Alamo Heights typically runs $3,500-$7,500 for homes in this market, with most jobs scheduled within 48 hours. Because Alamo Heights sits entirely within San Antonio’s heat island but operates its own permitting and inspections, we dispatch crews from our San Antonio office and coordinate directly with the city’s independent building department on every job. Call (830) 549-6646 for a written price before any work starts.
Why Alamo Heights Homes Are Different
Alamo Heights is a self-governing enclave surrounded by San Antonio, dense with 1920s-1950s Period Revival homes built with stone, brick, and stucco exteriors that were never meant to hold modern insulation. The plaster-on-lathe interiors and solid masonry walls in many of these homes mean there’s often no stud cavity at all, so standard batt installation is impossible without gutting rooms. After February 2021’s Winter Storm Uri, we saw a measurable wave of calls from Alamo Heights homeowners who realized their beautiful, uninsulated masonry homes couldn’t hold heat when it mattered.
Summer attic temperatures in these older homes regularly exceed 140°F, which makes attic work the highest-ROI upgrade for cooling costs in this specific climate. The city’s independent permitting and inspection process, separate from San Antonio’s, also means every retrofit needs documentation that preserves historic facades and original plaster walls. We factor that into every written scope.
Our Main Alamo Heights Services
Most Alamo Heights homeowners who call us start with attic work or whole-envelope spray foam. Here is what those jobs look like in this market.
Attic Insulation in Alamo Heights
Attic insulation in Alamo Heights usually means dealing with compressed original fiberglass from the 1960s or no insulation at all in pre-WWII homes. We start with a blower-door test to measure air leakage, then seal top plates and penetrations before adding anything. The documented photo record shows every step, and the before-and-after CFM50 numbers go to the homeowner in writing. Attic Insulation in Alamo Heights covers our full process for these older attics.
Spray Foam Insulation in Alamo Heights
Spray foam is often the only viable option for Alamo Heights homes with no wall cavities, applied to attic planes and rim joists without disturbing original plaster. We use open-cell and closed-cell products from Icynene and Demilec, selected by application, not by brand loyalty. Every job gets a written price before work starts and a documented photo record when the crew leaves. Spray Foam Insulation in Alamo Heights details our approach.
Blown-In Insulation in Alamo Heights
Blown-in dense-pack cellulose from GreenFiber lets us insulate Alamo Heights walls through drilled holes, preserving historic exteriors while filling cavities that were never meant to hold insulation. This is the standard approach for Tudor and Spanish Colonial homes where gutting walls isn’t an option. The crew patches holes to match existing mortar or stucco texture. Blown-In Insulation in Alamo Heights explains the technique.
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.
Before
AfterCrawl Space Encapsulation & Vapor Barrier in Alamo Heights
Crawl space encapsulation in Alamo Heights addresses a specific problem: the 1920s-1950s homes here were built with vented crawl spaces that pull humid San Antonio air under the house year-round, rotting floor joists and feeding mold. Because many of these homes sit on pier-and-beam foundations with limited clearance, encapsulation requires low-profile work and careful moisture management. Crawl Space Encapsulation & Vapor Barrier is our full service line for this.
Crawl Space Vapor Barrier
Signs you need it
Musty odors rising through floorboards, visible condensation on joists, or hardwood cupping above the crawl space indicate vapor intrusion.
What it costs in Alamo Heights
A 6-mil to 20-mil vapor barrier installed across the crawl floor typically runs $1,200-$2,800 in Alamo Heights, depending on square footage and obstacle density.
How we do it
We remove debris, grade the soil, seam-seal the barrier with tape, and mechanically fasten it to walls and piers so nothing shifts.
Crawl Space Encapsulation
Signs you need it
Standing water after rain, fungal growth on joists, or insulation falling from the subfloor means the crawl space is actively damaging the structure.
What it costs in Alamo Heights
Full encapsulation with sealed walls, dehumidifier, and sump pump if needed generally falls between $4,500 and $9,500 for Alamo Heights homes.
How we do it
We seal all vents, install rigid foam board on walls, lay the vapor barrier, add a commercial dehumidifier, and verify with humidity readings.
What Crawl Space Encapsulation & Vapor Barrier Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Vapor barrier (6-20 mil, floor only) | $1,200 - $2,800 |
| Partial encapsulation (walls + floor, no mechanical) | $3,500 - $5,500 |
| Full encapsulation with dehumidifier/sump | $4,500 - $9,500 |
How long does crawl space encapsulation take in Alamo Heights?
Most Alamo Heights crawl spaces are finished in two to four days, though tight clearance under 18 inches can add a day for material handling. Call (830) 549-6646 for a written price and timeline.
Will encapsulation affect my historic home’s ventilation?
No, controlled mechanical dehumidification replaces the failed passive ventilation these homes were originally built with, and we document the humidity differential you walk away with.
Radiant Barrier Installation in Alamo Heights
Radiant barrier installation in Alamo Heights targets the single biggest thermal load these homes face: attic temperatures that exceed 140°F for months, radiating heat through ceilings into living spaces with little original insulation to stop it. For 1920s-1950s homes with high ceilings and minimal attic floor insulation, a radiant barrier can reduce ceiling heat gain by 20-35% before we even add insulation. Radiant Barrier Installation covers our full specifications.
Attic Radiant Barrier
Signs you need it
Upstairs rooms that stay hot after sunset, AC running continuously past 8 p.m., or touchable ceiling heat in summer indicate radiant ceiling gain.
What it costs in Alamo Heights
Attic radiant barrier installation in Alamo Heights typically runs $1,500-$3,200 for homes in this size range.
How we do it
We staple perforated foil across rafter bottoms or lay it over existing insulation, maintaining ventilation channels and documenting placement with photos.
Radiant Barrier Roof Deck
Signs you need it
Shingle roofs less than ten years old with failing HVAC performance, or plans to reroof soon, make roof-deck application the better long-term investment.
What it costs in Alamo Heights
Roof-deck radiant barrier applied during reroofing or retrofit typically costs $2,000-$4,500 in Alamo Heights.
How we do it
We apply foil-faced sheathing or liquid radiant coating to the roof deck interior, sealed at seams, with before-and-after attic temperature readings.
What Radiant Barrier Installation Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Attic radiant barrier (foil, rafter or floor) | $1,500 - $3,200 |
| Radiant barrier roof deck application | $2,000 - $4,500 |
| Radiant barrier with attic air sealing package | $2,800 - $5,500 |
Does radiant barrier work with my old attic insulation?
Yes, radiant barrier complements rather than replaces existing insulation, and we assess compression levels before installation to recommend whether addition or replacement makes sense. Call (830) 549-6646 for a written evaluation.
How much cooler will my attic get?
Typical Alamo Heights attics see a 20-35 degree drop in peak surface temperatures, with the biggest gains in homes with dark shingles and minimal existing insulation.
Insulation Removal & Replacement in Alamo Heights
Insulation removal and replacement in Alamo Heights is common in homes where original fiberglass has compressed to half its labeled R-value, or where rodent activity, water damage, or fire remediation has made the existing material hazardous. The 1920s-1950s housing stock here often contains multiple eras of DIY additions layered over nothing, creating inconsistent thermal performance that shows up as hot rooms and high bills. Insulation Removal & Replacement details our containment and disposal process.
Contaminated Insulation Removal
Signs you need it
Visible droppings, urine staining, mold growth, or musty smells that intensify when the HVAC runs mean the insulation is a health hazard, not a thermal asset.
What it costs in Alamo Heights
Contaminated insulation removal with full PPE, HEPA containment, and disposal in Alamo Heights typically runs $2,000-$4,500.
How we do it
We seal the attic, run negative air machines, remove material in bagged loads, HEPA-vacuum all surfaces, and deliver photos of clean joists before anything new goes in.
Insulation Replacement
Signs you need it
Original fiberglass flattened below joist tops, R-values under R-19 in a climate that calls for R-38 to R-60, or rooms that vary by more than 8 degrees from the thermostat setting.
What it costs in Alamo Heights
New insulation replacement with air sealing in Alamo Heights attics typically falls between $2,500 and $6,000 depending on square footage and access.
How we do it
We remove old material, seal all top plates and penetrations, install new insulation to uniform depth, and verify with blower-door and depth documentation.
What Insulation Removal & Replacement Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Contaminated insulation removal only | $2,000 - $4,500 |
| Standard insulation removal (non-hazardous) | $1,000 - $2,500 |
| Removal + replacement with air sealing | $2,500 - $6,000 |
Can you remove insulation without tearing out my ceiling?
Yes, attic insulation is removed from above through the access hatch or by adding a temporary roof vent; we never open finished ceilings for attic work. Call (830) 549-6646 for a written scope.
Do I need to leave during removal?
Contaminated removals require temporary evacuation of the home during active work; we coordinate timing and provide HEPA clearance documentation before you return.
Attic Air Sealing in Alamo Heights
Attic air sealing in Alamo Heights is the foundation of every job we do, because blowing new insulation over an unsealed attic floor is sealing in the leaks that are costing you money. The 1920s-1950s homes here have decades of electrical, plumbing, and HVAC penetrations that were never sealed, plus original plaster gaps at top plates that act as chimneys for conditioned air. Attic Air Sealing is our standalone service for homeowners who want to measure and fix leakage before adding insulation.
Top Plate & Penetration Sealing
Signs you need it
Dust streaks around ceiling fixtures, cobwebs concentrated at wall-ceiling joints, or rooms that pressurize when doors are closed indicate top plate leakage.
What it costs in Alamo Heights
Top plate and penetration sealing in Alamo Heights typically runs $800-$2,000, with blower-door verification included.
How we do it
We foam-seal all top plates, wire penetrations, pipe chases, and chimney gaps from the attic side, then retest with the blower door to quantify the reduction.
Can Light & Duct Boot Sealing
Signs you need it
LED retrofit cans that leak attic air, duct boots pulling 120°F attic air into supply lines, or visible gaps around HVAC ceiling connections.
What it costs in Alamo Heights
Can light sealing with fire-rated covers and duct boot sealing in Alamo Heights typically costs $400-$1,200 depending on count and accessibility.
How we do it
We install pre-fabricated fire-rated enclosures over cans, mastic-seal duct boots to drywall, and verify with smoke pencil and blower-door differential.
What Attic Air Sealing Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Top plate and penetration sealing | $800 - $2,000 |
| Can light and duct boot sealing | $400 - $1,200 |
| Full attic air sealing (comprehensive) | $1,500 - $3,500 |
How much does air sealing reduce my bills?
Typical Alamo Heights homes see a 15-25% reduction in heating and cooling load after comprehensive attic air sealing, with the biggest gains in pre-1950 construction. Call (830) 549-6646 for a written estimate with projected savings.
Can you seal my attic without adding insulation?
Yes, we perform standalone air sealing with blower-door documentation for homeowners who want to phase the work or verify contractor claims from other bids.
Wall Insulation in Alamo Heights
Wall insulation in Alamo Heights presents a specific challenge that contractors from outside this market often miss: a significant share of 1930s-1940s homes here were built with solid masonry or full-brick walls and no interior stud cavity whatsoever. When we open walls for assessment and find no cavity to fill, the job changes completely, and we’ve learned to price and scope for that possibility from the start. Wall Insulation covers our full range of retrofit approaches.
Drill & Fill Wall Insulation
Signs you need it
Exterior walls that match outdoor temperature on the inside, or homes with confirmed stud cavities but no insulation, are candidates for drilled dense-pack.
What it costs in Alamo Heights
Drill-and-fill cellulose or fiberglass in Alamo Heights homes with accessible cavities typically runs $2,500-$5,500 for a full house.
How we do it
We drill 2-inch holes at stud bay spacing, dense-pack cellulose to 3.5 pounds per cubic foot, patch with matching mortar or stucco, and photo-document every bay.
Injection Foam Wall Insulation
Signs you need it
Narrow or irregular cavities, balloon framing in pre-1940 homes, or walls where batts have settled to half the bay height need foam’s expansion and adhesion.
What it costs in Alamo Heights
Injection foam wall insulation in Alamo Heights typically costs $3,500-$7,500 depending on wall area and cavity condition.
How we do it
We inject slow-rise foam through drilled ports, monitor expansion to prevent bowing, trim excess after cure, and patch finishes to match existing texture.
What Wall Insulation Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Drill-and-fill cellulose/fiberglass | $2,500 - $5,500 |
| Injection foam wall insulation | $3,500 - $7,500 |
| Exterior wall insulation with air sealing | $4,000 - $8,500 |
What if my walls have no cavities?
We pivot to interior foam board with finished covering or exterior insulation with cladding, scoped and priced before any demolition begins. Call (830) 549-6646 for a written assessment.
Will drill-and-fill damage my plaster?
We drill through mortar joints in brick homes and repair with color-matched mortar; in stucco, we core and patch to blend, with photos of every repair.
Attic Cleaning & Rodent Proofing in Alamo Heights
Attic cleaning and rodent proofing in Alamo Heights addresses a recurring problem in the 1920s-1950s housing stock: mature trees, established neighborhoods, and pier-and-beam foundations that give roof rats and squirrels multiple access points. The original construction gaps at eaves, unsealed vent screens, and plumbing penetrations in these older homes create entry paths that newer construction doesn’t have. Attic Cleaning & Rodent Proofing is our complete service for this.
Rodent Proofing & Exclusion
Signs you need it
Scratching at dusk or dawn, gnawed wiring visible in the attic, or droppings concentrated near eaves and soffits indicate active entry points.
What it costs in Alamo Heights
Rodent proofing with exclusion work in Alamo Heights typically runs $1,200-$3,000 depending on entry point count and roof complexity.
How we do it
We inspect every linear foot of roofline, seal gaps with rodent-proof mesh and foam, install chimney caps and vent guards, and provide a written exclusion map.
Attic Sanitizing & Decontamination
Signs you need it
Visible urine staining on joists, saturated insulation that holds odor, or health concerns after confirmed rodent activity require decontamination before reinsulation.
What it costs in Alamo Heights
Attic sanitizing with enzymatic treatment, HEPA vacuuming, and decontamination in Alamo Heights typically costs $1,500-$3,500.
How we do it
We remove contaminated material, apply enzyme treatment to break down organic matter, HEPA-vacuum all surfaces, and deliver clearance photos before any new insulation.
What Attic Cleaning & Rodent Proofing Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Rodent proofing and exclusion | $1,200 - $3,000 |
| Attic sanitizing and decontamination | $1,500 - $3,500 |
| Full attic restoration (cleaning + proofing + insulation) | $3,500 - $8,000 |
How do I know if rodents are in my attic right now?
Listen for movement at dawn and dusk, check for droppings near attic access, and look for gnawed wiring or compressed insulation trails. Call (830) 549-6646 for a written inspection scope.
Will they come back after you seal?
Our exclusion work carries the 365-Day Done Right Promise; if rodents re-enter through any sealed point, we return and fix it at no charge.
Home Energy Audit in Alamo Heights
A home energy audit in Alamo Heights gives owners of 1920s-1950s homes a documented baseline of where conditioned air is escaping and where heat is entering, specific to the masonry construction and high ceilings common here. The audit results become the written scope for any subsequent work, with prioritized recommendations and projected savings attached to each line item. Home Energy Audit details our full diagnostic protocol.
Blower Door Test
Signs you need it
Drafts you can’t locate, rooms that never reach set temperature, or plans to invest in insulation without knowing current leakage volume.
What it costs in Alamo Heights
A standalone blower-door test in Alamo Heights typically runs $300-$600, or is included free with any proposal for work.
How we do it
We install a calibrated fan in an exterior door, depressurize to 50 Pascals, and measure CFM50 to quantify total envelope leakage in one number.
Thermal Imaging Inspection
Signs you need it
Hot or cold spots on walls and ceilings, suspected missing insulation behind finished surfaces, or verification of air sealing quality after work.
What it costs in Alamo Heights
Thermal imaging as part of a full audit in Alamo Heights typically costs $200-$400 when bundled, or $400-$700 standalone.
How we do it
We scan every exterior surface with a calibrated IR camera during controlled temperature differential, marking thermal bypasses and insulation voids for the written report.
What Home Energy Audit Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Blower-door test (standalone) | $300 - $600 |
| Full home energy audit with thermal imaging | $400 - $800 |
| Audit bundled with proposal for work | Included at no charge |
What does the audit report include?
You receive a written priority list with blower-door and thermal images, specific recommendations with projected savings, and a fixed-price proposal for any work. Call (830) 549-6646 to schedule.
How long does the audit take?
Most Alamo Heights audits take two to three hours for homes in this size range, with the blower-door test running 30 minutes and thermal imaging done at multiple times of day if needed.
Brands We Service in Alamo Heights
We stock and install Owens Corning, Johns Manville, Knauf, Icynene, Demilec, and GreenFiber products, selected by application rather than by exclusive arrangement. No proprietary lock-in means we specify what performs for your specific Alamo Heights home. See our brands for detailed specifications.
Pricing for Insulation in Alamo Heights, TX
| Service | Typical range in Alamo Heights |
|---|---|
| Vapor barrier (crawl floor) | $1,200 - $2,800 |
| Full crawl space encapsulation | $4,500 - $9,500 |
| Attic radiant barrier | $1,500 - $3,200 |
| Radiant barrier roof deck | $2,000 - $4,500 |
| Contaminated insulation removal | $2,000 - $4,500 |
| Insulation removal + replacement | $2,500 - $6,000 |
| Attic air sealing (comprehensive) | $1,500 - $3,500 |
| Drill-and-fill wall insulation | $2,500 - $5,500 |
| Injection foam wall insulation | $3,500 - $7,500 |
| Rodent proofing and exclusion | $1,200 - $3,000 |
| Attic sanitizing and decontamination | $1,500 - $3,500 |
| Full home energy audit | $400 - $800 |
Prices in Alamo Heights push toward the higher end when homes have limited attic access, solid masonry without cavities, or active contamination requiring PPE and HEPA containment. Every job still begins with a written price before any work starts, under Haven Standard Clause 1.
Neighborhoods We Serve in Alamo Heights
We work across the full Alamo Heights city limits, from the older homes near the country club to the mid-century pockets closer to Broadway. Response time is typically same-day or next-day for assessments, with crews dispatched from our San Antonio office.
- Olmos Park Terrace
- Terrell Hills adjacencies
- Country Club area
- Broadway corridor
- Alamo Heights Historic District
Service Area - Cities Near Alamo Heights
Our crews serve Alamo Heights directly and also work regularly in Seguin, TX, New Braunfels, TX, Cibolo, TX, and Schertz, TX. Scheduling and dispatch are coordinated from our San Antonio office, with local crews assigned by job location.
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 operates its own permitting and inspections independently of San Antonio, and we handle all applications as part of our written scope. Historic District properties may have additional review requirements for exterior modifications.
We typically schedule assessments within 24-48 hours, with emergency calls answered by a live person 24/7 and same-day response when the schedule allows. Crews are dispatched from our San Antonio office for all Alamo Heights jobs.
Our standard approaches for Alamo Heights, dense-pack through drilled holes and spray foam in attic planes, are specifically chosen to preserve original plaster walls and historic facades. We photograph every surface before work begins and document the condition when we leave.
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 60-minute.
- 4You approve before work beginsNothing starts until you say go.
What Alamo Heights 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."The winter gas bill dropped by about a third. They had estimated a quarter, so they under-promised."
- Genevieve R."Crawl space encapsulation done properly. Photographs of the vapour barrier at every seam, and the damp smell in the hallway is gone."
- Ainsley P.