Insulation in Alamo Heights, TX
Most Alamo Heights homes were built between the 1920s and 1950s with little to no insulation, and retrofitting these vintage envelopes is the core of our work here. We start every job with a blower-door test to measure exactly how much conditioned air the home is losing, then seal leaks before adding any insulation. Call (830) 420-0953 for a written price before any work starts.
Why Alamo Heights Homes Are Different
Alamo Heights sits entirely inside San Antonio’s city limits, but its housing stock developed decades earlier than the surrounding subdivisions. The large, custom-built homes here feature plaster-on-lath walls, balloon framing in the oldest sections, and attics that were often left completely bare or received thin fiberglass batts that have compressed to near-uselessness over 70-plus years. Multiple additions from different eras mean a single home may contain three or four distinct wall and attic assemblies, each needing its own approach.
Summer attic temperatures in Alamo Heights routinely exceed 140°F, turning those thin or absent attic layers into a major energy drain. The February 2021 Winter Storm Uri exposed how poorly these vintage homes retain heat during hard freezes, and we’ve seen lasting demand for envelope upgrades that handle both extremes. Many pre-1950s attics still contain original knob-and-tube wiring running through joist bays, a code barrier that must be resolved before blown-in insulation can legally be installed, a complication almost never found in post-1980s construction just across the city line.
Our Main Alamo Heights Services
Alamo Heights homeowners call us most often for attic work and spray foam retrofits in older homes with complex rooflines and finished interiors they want to preserve.
Attic Insulation in Alamo Heights
Attic insulation in Alamo Heights means working around original plaster ceilings, irregular joist spacing, and sometimes knob-and-tube wiring that must be addressed first. We measure what exists, identify thermal bypasses with blower-door guidance, and specify materials from Owens Corning or Johns Manville that fit the assembly without damaging finishes. Every job closes with a documented photo record and, when applicable, before-and-after blower-door numbers. Attic Insulation in Alamo Heights
Spray Foam Insulation in Alamo Heights
Spray foam insulation in Alamo Heights is often the only practical way to insulate finished walls without gutting original plaster. Open-cell foam allows wall assemblies to dry while adding R-value, and we use it in attics with complex geometry where batts cannot fit properly. We source from Icynene and Demilec among others, and we never spray until air sealing of top plates and penetrations is complete. Spray Foam Insulation in Alamo Heights
Blown-In Insulation in Alamo Heights
Blown-in insulation in Alamo Heights requires careful prep because of the wiring era in these homes. We inspect for knob-and-tube, seal the attic floor first, then blow GreenFiber cellulose or Owens Corning fiberglass to the depth the assembly needs. The material choice depends on what we find during inspection and what the homeowner’s goals are for air tightness and sound control. 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.
Before
AfterCrawl Space Encapsulation & Vapor Barrier in Alamo Heights
Crawl space encapsulation in Alamo Heights addresses a specific problem in these older homes: many were built with vented crawl spaces that allow humid Gulf air to flow beneath the floor, saturating joists and subflooring during our long cooling season. Because the homes are built out and landlocked by San Antonio, additions and renovations have often compromised original drainage patterns, leaving some crawl spaces wetter than when first constructed. Crawl Space Encapsulation & Vapor Barrier is the systematic fix we install after diagnosing moisture sources.
Crawl Space Vapor Barrier
Signs you need it
Musty odors rising through floor registers, sagging insulation between joists, or visible mold on subflooring indicate ground moisture is migrating upward unchecked.
What it costs in Alamo Heights
Most crawl space vapor barrier installations in Alamo Heights run between $1,200 and $2,800 depending on square footage, existing debris, and whether the foundation walls need sealing.
How we do it
We remove degraded material, grade the earth, lay 6-mil or thicker polyethylene sheeting with sealed seams, and extend it up foundation walls to create a continuous ground cover.
Crawl Space Encapsulation
Signs you need it
Standing water after rain, hardwood cupping above, or HVAC ducts sweating in summer mean the crawl space is acting as a thermal and moisture liability.
What it costs in Alamo Heights
Full crawl space encapsulation in Alamo Heights typically ranges from $3,500 to $7,500 for complete wall and floor sealing with dehumidification.
How we do it
We seal all vents, install rigid foam board on walls, apply vapor barrier across the floor and up walls, add a dehumidifier sized to the volume, and verify with humidity readings.
What Crawl Space Encapsulation & Vapor Barrier Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Crawl space vapor barrier (ground only) | $1,200 - $2,800 |
| Partial encapsulation (walls + floor, no dehumidifier) | $2,800 - $4,500 |
| Full encapsulation with dehumidification | $3,500 - $7,500 |
How long does crawl space encapsulation take in Alamo Heights?
Most crawl space encapsulation jobs in Alamo Heights finish in two to four days, depending on debris removal needs and whether we find active leaks that need repair first. Call (830) 420-0953 for a written scope and timeline.
Will encapsulation fix my hardwood floor cupping?
Stopping moisture migration from below often stabilizes cupping within one to two heating seasons, though severely damaged boards may still need refinishing. We document pre-existing conditions with photos before starting.
Radiant Barrier Installation in Alamo Heights
Radiant barrier installation in Alamo Heights targets the single biggest thermal load these older homes face: attic temperatures that routinely hit 140°F in summer, radiating heat downward through undersized or absent insulation. Because many Alamo Heights attics contain original knob-and-tube wiring, we cannot simply bury the space in loose-fill without inspection, making radiant barrier a lower-risk first step that cuts radiant heat gain without disturbing existing wiring. Radiant Barrier Installation works by reflecting infrared energy rather than absorbing it.
Attic Radiant Barrier
Signs you need it
Second-floor rooms that stay hot past midnight, AC running continuously on June afternoons, or ductwork in the attic that feels hot to the touch all point to excessive radiant heat gain.
What it costs in Alamo Heights
Attic radiant barrier installation in Alamo Heights typically runs between $1,500 and $3,200 for a standard 2,000-square-foot home.
How we do it
We staple perforated foil across rafter bottoms or lay it over existing insulation, maintaining ventilation paths and keeping it free of dust accumulation that would reduce reflectivity.
Radiant Barrier Roof Deck
Signs you need it
New roof installation or major repair is the right time for roof-deck application, since the barrier goes on the underside of decking before new roofing is laid.
What it costs in Alamo Heights
Radiant barrier roof deck application during reroofing in Alamo Heights adds $1,800 to $3,800 to the roofing project depending on pitch and accessibility.
How we do it
We apply foil-faced sheathing or spray-applied low-emissivity coating to the underside of roof decking, creating a reflective surface that blocks 95% of radiant heat before it enters the attic.
What Radiant Barrier Installation Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Attic radiant barrier (foil, existing roof) | $1,500 - $3,200 |
| Radiant barrier roof deck (during reroofing) | $1,800 - $3,800 |
| Radiant barrier with attic air sealing package | $2,800 - $5,500 |
Does radiant barrier work with my old insulation?
Radiant barrier complements existing insulation by addressing the heat source itself; we often install it over degraded fiberglass while planning full replacement for a later phase. Call (830) 420-0953 to sequence the work.
Will radiant barrier help in winter too?
Radiant barrier primarily reduces summer heat gain; winter benefit is minimal, which is why we pair it with air sealing and insulation upgrades for year-round performance.
Insulation Removal & Replacement in Alamo Heights
Insulation removal in Alamo Heights is rarely straightforward because the material we encounter has often been in place for 50 to 90 years, compressed, contaminated, or installed over wiring that no longer meets code. The 1920s-to-1950s construction timeline means we regularly find vermiculite that may contain asbestos, rodent-soaked batts, and fiberglass turned to gray dust, all of which must be handled with proper containment and disposal. Insulation Removal & Replacement starts with testing and documentation, not demolition.
Contaminated Insulation Removal
Signs you need it
Urine staining on insulation, visible droppings, persistent odors after pest treatment, or fiberglass that disintegrates when touched means the material is no longer performing and is likely a health hazard.
What it costs in Alamo Heights
Contaminated insulation removal in Alamo Heights runs between $2,000 and $4,500 depending on volume, access constraints, and required PPE and disposal protocols.
How we do it
We establish negative air pressure, remove material in sealed bags, HEPA-vacuum all surfaces, apply antimicrobial treatment where needed, and document the empty cavity before any new insulation goes in.
Vermiculite & Old Insulation Removal
Signs you need it
Pebbly gray-brown insulation between joists, especially in pre-1980 homes, is likely vermiculite that should be tested for asbestos before disturbance.
What it costs in Alamo Heights
Vermiculite removal in Alamo Heights, with proper asbestos abatement if positive, typically ranges from $4,000 to $9,000 depending on volume and lab results.
How we do it
We collect a sample for lab analysis first; if asbestos is present, a licensed abatement contractor performs removal under containment, and we resume with air sealing and new insulation after clearance testing.
What Insulation Removal & Replacement Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Standard insulation removal (fiberglass batts) | $1,200 - $2,800 |
| Contaminated insulation removal | $2,000 - $4,500 |
| Vermiculite removal with abatement | $4,000 - $9,000 |
Can you remove insulation with knob-and-tube wiring present?
We can remove around active knob-and-tube, but we cannot bury it in new insulation per code; we flag it in our written scope and can recommend electricians we trust in Alamo Heights. Call (830) 420-0953 for an inspection.
How do I know if my old insulation has asbestos?
Vermiculite is the main concern in homes this age; we collect samples for third-party lab analysis before touching anything, and we share the report with you before proceeding.
Attic Air Sealing in Alamo Heights
Attic air sealing in Alamo Heights is the single most cost-effective envelope upgrade for these vintage homes because the original construction had no top plate sealing, no can light enclosures, and gaps around chimneys and plumbing stacks that have widened as framing settled over 80-plus years. We never add insulation before sealing these leaks; the blower-door test gives us a baseline CFM50 reading, we seal, then we test again to prove the reduction. Attic Air Sealing is prerequisite work, not an upsell.
Top Plate & Penetration Sealing
Signs you need it
Dust streaks on insulation around wall tops, cobwebs concentrated at framing joints, or rooms that are impossible to keep warm despite new windows all indicate unsealed top plates.
What it costs in Alamo Heights
Top plate and penetration sealing in Alamo Heights typically runs between $1,800 and $3,500 for a standard attic with normal access.
How we do it
We foam-seal every top plate joint, wire penetration, and pipe chase with two-part polyurethane, then verify with blower-door subtraction testing to confirm each zone’s contribution to the total leak.
Can Light & Duct Boot Sealing
Signs you need it
Attic air blowing through can light trim in winter, or supply ducts that lose 10 degrees between the plenum and the register, mean conditioned air is escaping into the attic.
What it costs in Alamo Heights
Can light sealing and duct boot sealing in Alamo Heights generally costs between $800 and $2,200 depending on fixture count and duct configuration.
How we do it
We install fire-rated enclosures over IC and non-IC cans, mastic-seal duct boots to drywall, and pressure-test ductwork if leakage exceeds 10% of fan flow.
What Attic Air Sealing Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Top plate and penetration sealing | $1,800 - $3,500 |
| Can light and duct boot sealing | $800 - $2,200 |
| Full attic air sealing with blower-door verification | $2,500 - $5,000 |
How much does air sealing lower my blower-door score?
Typical reductions in Alamo Heights homes this age run 20% to 40%, moving a 4,500 CFM50 house to 3,000 or below; we publish your before-and-after numbers in the job record. Call (830) 420-0953 to schedule testing.
Can you air seal without adding insulation?
Yes, air sealing is a standalone service and often the right first step in Alamo Heights homes where insulation is adequate but the envelope leaks like a sieve; we price it separately and you can phase insulation later.
Wall Insulation in Alamo Heights
Wall insulation in Alamo Heights presents a preservation challenge: homeowners want thermal performance but cannot sacrifice original plaster, hardwood trim, or the character that defines these historic homes. The balloon framing in pre-1940s houses and platform framing in later construction create different cavity geometries, and multiple additions mean wall thicknesses vary across a single structure. Wall Insulation here means choosing methods that work with the existing finish, not against it.
Injection Foam Wall Insulation
Signs you need it
Walls that are cold to the touch in January, ice dams on roof edges above uninsulated walls, or rooms that never reach thermostat setpoint despite working HVAC indicate empty stud cavities.
What it costs in Alamo Heights
Injection foam wall insulation in Alamo Heights runs between $3,500 and $7,000 for a typical 2,000-square-foot home with accessible exterior walls.
How we do it
We drill 5/8-inch holes through exterior siding or interior plaster at stud spacing, inject slow-rise foam that fills without bowing lath, then patch and match finish.
Drill & Fill Wall Insulation
Signs you need it
Knob-and-tube wiring in walls prevents dense-pack cellulose, but drill-and-fill with mineral wool or fiberglass can work where wiring has been updated and cavities are open.
What it costs in Alamo Heights
Drill-and-fill wall insulation in Alamo Heights typically costs between $2,800 and $5,500 depending on cavity depth and the number of obstructions we encounter.
How we do it
We scope cavities with a borescope first, drill at header and sill locations, blow Knauf or Johns Manville material to density, and verify fill with thermal imaging.
What Wall Insulation Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Injection foam (exterior walls) | $3,500 - $7,000 |
| Drill-and-fill (cellulose or mineral wool) | $2,800 - $5,500 |
| Interior wall soundproofing | $1,800 - $4,200 |
Will injection foam damage my plaster?
Slow-rise foam formulations and controlled pressure protect plaster; we inspect lath condition first and note any pre-existing cracks in the written scope. Call (830) 420-0953 for an assessment of your walls.
Can you insulate walls with knob-and-tube wiring inside?
No code-compliant insulation can contact active knob-and-tube; we identify it with borescope inspection and recommend electrician partners in Alamo Heights before we proceed with any wall work.
Attic Cleaning & Rodent Proofing in Alamo Heights
Attic cleaning in Alamo Heights often reveals decades of layered contamination because these old homes have had multiple roof penetrations, deteriorated fascia, and soffit gaps that rodents have exploited for generations. The mild winters and abundant oak canopy in Alamo Heights support persistent roof rat populations, and once inside, they compress insulation, leave biohazardous waste, and create entry points for moisture. Attic Cleaning & Rodent Proofing restores the space to a condition where new insulation can perform as designed.
Attic Sanitizing & Decontamination
Signs you need it
Visible droppings on insulation, ammonia odors detectable at the attic hatch, or insulation matted into pathways indicate active or recent rodent occupation requiring decontamination.
What it costs in Alamo Heights
Attic sanitizing and decontamination in Alamo Heights typically ranges from $1,500 to $3,500 depending on square footage and contamination depth.
How we do it
We remove soiled insulation under negative pressure, apply enzyme-based sanitizer to all structural surfaces, HEPA-vacuum, and run air scrubbers until particulate counts drop to safe levels.
Rodent Proofing & Exclusion
Signs you need it
Chewed fascia boards, gaps at roof junctions, or hearing scurrying after dark mean entry points are active and will re-admit pests even after cleaning.
What it costs in Alamo Heights
Rodent proofing and exclusion in Alamo Heights runs between $1,200 and $2,800 for a typical home with standard roof complexity and accessible soffits.
How we do it
We seal all gaps larger than 1/4 inch with rodent-proof mesh, foam, or metal flashing, install chew-resistant vent covers, and document every sealed point with photos.
What Attic Cleaning & Rodent Proofing Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Attic sanitizing and decontamination | $1,500 - $3,500 |
| Rodent proofing and exclusion | $1,200 - $2,800 |
| Full attic restoration (cleaning + proofing + new insulation) | $4,500 - $9,500 |
How do I know if rodents are currently in my attic?
Fresh droppings, gnaw marks on wood or wiring, and noises between dusk and dawn are active signs; we inspect and document evidence before proposing work. Call (830) 420-0953 for same-week inspection.
Will insurance cover rodent damage cleanup?
Most policies exclude rodent damage and contamination; we provide detailed documentation and photos if you choose to file, and we price the work upfront so you know the full cost before deciding.
Home Energy Audit in Alamo Heights
A home energy audit in Alamo Heights is the right starting point for homeowners who know their vintage home underperforms but cannot pinpoint whether the problem is insulation, air leakage, duct loss, or all three. The blower-door test gives a single number for total envelope leakage, thermal imaging reveals insulation voids behind plaster, and duct testing quantifies conditioned air lost to the attic. Home Energy Audit produces a written priority list with prices for each phase.
Blower Door Test
Signs you need it
High utility bills with no obvious cause, rooms that differ by more than 5 degrees, or a home that never felt comfortable since purchase all warrant a measured leakage test.
What it costs in Alamo Heights
A standalone blower-door test in Alamo Heights typically costs between $350 and $600, or is included at no charge when bundled with a full audit.
How we do it
We mount a calibrated fan in an exterior door, depressurize the house to 50 Pascals, and measure CFM50, then walk the house with a smoke pencil to locate the largest leaks.
Thermal Imaging Inspection
Signs you need it
Cold spots on exterior walls in winter, hot ceiling patches in summer, or uncertainty about whether walls contain any insulation at all are resolved with infrared camera mapping.
What it costs in Alamo Heights
Thermal imaging inspection in Alamo Heights runs between $250 and $500 as a standalone service, or is included in the full audit package.
How we do it
We scan all exterior surfaces with a FLIR camera during a 20-degree temperature differential, mark anomalies on floor plans, and correlate findings with blower-door data to distinguish insulation gaps from air leakage.
What Home Energy Audit Costs in Alamo Heights
| Item | Typical range in Alamo Heights |
|---|---|
| Blower-door test (standalone) | $350 - $600 |
| Thermal imaging inspection (standalone) | $250 - $500 |
| Full home energy audit with written report | $450 - $850 |
What does the audit report include?
You receive blower-door and duct-leakage numbers, thermal images with annotations, a prioritized scope with written prices for each recommendation, and the documented photo record of our visit. Call (830) 420-0953 to schedule.
Can I use audit results for utility rebates?
Yes, we format reports to meet CPS Energy and Texas Gas Service documentation requirements; you submit with your rebate application and we provide any follow-up testing needed.
Brands We Service in Alamo Heights
We source insulation and air-sealing materials from Owens Corning, Johns Manville, Knauf, and GreenFiber among others, with no proprietary lock-in that limits your options. Our San Antonio office stocks common batt and loose-fill sizes for quick turnaround on standard Alamo Heights jobs. our brands
Pricing for Insulation in Alamo Heights, TX
| Service | Typical range in Alamo Heights |
|---|---|
| Crawl space vapor barrier | $1,200 - $2,800 |
| Full crawl space encapsulation | $3,500 - $7,500 |
| Attic radiant barrier | $1,500 - $3,200 |
| Radiant barrier roof deck | $1,800 - $3,800 |
| Standard insulation removal | $1,200 - $2,800 |
| Contaminated insulation removal | $2,000 - $4,500 |
| Vermiculite removal with abatement | $4,000 - $9,000 |
| Top plate and penetration sealing | $1,800 - $3,500 |
| Can light and duct boot sealing | $800 - $2,200 |
| Injection foam wall insulation | $3,500 - $7,000 |
| Drill-and-fill wall insulation | $2,800 - $5,500 |
| Full home energy audit | $450 - $850 |
Prices in Alamo Heights push higher when we encounter knob-and-tube wiring that requires electrician coordination, multiple attic additions with different framing eras, or active rodent infestations needing cleanup before insulation work. Every job still begins with a written price under Haven Standard Clause 1, no exceptions.
Neighborhoods We Serve in Alamo Heights
Our crews work throughout Alamo Heights with same-day response for urgent calls and scheduled appointments for full audits and encapsulations. Dispatch is coordinated from our San Antonio office, with technicians arriving in uniform and background-checked.
- Olmos Park Terrace
- Terrell Hills adjacent
- Alamo Heights core (Broadway corridor)
- Monte Vista historic district edges
- Lincoln Heights
Service Area - Cities Near Alamo Heights
We serve homeowners throughout the San Antonio metro area, with regular work in Converse, TX, Universal City, TX, Live Oak, TX, and Windcrest, TX in addition to Alamo Heights. Each city gets the same written-price protocol and documented photo record.
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
Alamo Heights does not require a separate permit for insulation retrofit in most cases, but any electrical work triggered by knob-and-tube replacement does require permitting through the city; we note permit needs in our written scope when they apply.
We schedule energy audits and standard estimates within three to five business days, and emergency situations like contaminated insulation or active leaks get same-day or next-day response; a live person answers calls 24/7 to coordinate.
Our methods for Alamo Heights homes prioritize preservation: injection foam uses minimal pressure, dense-pack cellulose is installed through exterior holes when possible, and we document pre-existing plaster condition before starting so there is no dispute about what was already there.
Call (830) 420-0953 for a free estimate with a written price before any work starts. Under the Haven Standard, you get a flat price, written scope, and written warranty before anyone lifts a tool, plus a documented photo record when the crew leaves.
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 same-day.
- 4You approve before work beginsNothing starts until you say go.
What Alamo Heights Customers Say
"Crawl space encapsulation done properly. Photographs of the vapour barrier at every seam, and the damp smell in the hallway is gone."
- Ainsley P."Two other companies quoted to blow more insulation on top of what was there. These were the only ones who said the existing material had to come out first, and explained why."
- Clifford E."The winter gas bill dropped by about a third. They had estimated a quarter, so they under-promised."
- Genevieve R.