Insulation in Terrell Hills, TX
Most Terrell Hills homes were built between the late 1940s and late 1960s with original insulation that has compressed to R-5 or less after decades of settling, making whole-home envelope retrofits the highest-ROI improvement available in this market. We treat air sealing as a hard prerequisite, not an upsell, and publish before-and-after blower-door numbers on every job so you can verify the performance change you paid for. If your attic has original fiberglass batts flattened against the roof deck with no airspace, call (830) 549-6646 for a free estimate and we’ll show you exactly what we find.
Why Terrell Hills Homes Are Different
Terrell Hills is a small, affluent enclave entirely surrounded by San Antonio, built out almost completely in the post-war boom. The housing stock is distinctive: large custom brick homes with hip roofs, generous square footage, and wall cavities that were typically left empty at construction. The February 2021 Winter Storm Uri exposed how poorly these mid-century homes retain warmth, and San Antonio’s brutal summer stretches above 100°F punish the same weak thermal envelope from the other direction.
Many Terrell Hills homes have restricted soffit ventilation and tight rafter tails. We routinely find original fiberglass batts compressed flat against the roof deck with no airspace, a chronic moisture-trapping condition that has rotted or blackened the insulation. This failure mode adds removal cost that surprises homeowners until they see the photos. The wealth of the homeowner base means work here is high-ticket whole-home retrofits on $700K-$2M+ properties, not basic weatherization, and customers expect documented evidence, not promises.
Our Main Terrell Hills Services
Terrell Hills homeowners call us most often for attic retrofits and spray foam upgrades. These three pages detail our most requested work in your area:
Attic Insulation in Terrell Hills
Attic jobs in Terrell Hills almost always begin with removal of compressed, moisture-cycled original batts before we can seal and reinsulate. We document the existing condition with photos, perform blower-door testing to establish your baseline air leakage, and deliver a written price before any work starts. Most Terrell Hills attic retrofits combine air sealing with blown-in fiberglass or cellulose to modern R-38 to R-60 levels. Attic Insulation in Terrell Hills covers full project scope, pricing, and what the documentation package includes.
Spray Foam Insulation in Terrell Hills
Spray foam is increasingly requested in Terrell Hills for unvented attic conversions and wall cavity fill in homes where drill-and-fill injection is not practical. We use open-cell and closed-cell products from Icynene and Demilec, selected by application, never by proprietary lock-in. Every spray foam job includes pre- and post-blower-door readings so you can see the air-sealing result in one number. Spray Foam Insulation in Terrell Hills details material selection, cost factors, and the Haven Standard documentation you receive.
Blown-In Insulation in Terrell Hills
Blown-in fiberglass or cellulose is the standard replacement for failed original batts in Terrell Hills attics, but only after air sealing is complete. We source from Owens Corning, Johns Manville, and GreenFiber, matching material to your specific attic conditions and ventilation constraints. The work includes a Documented Photo Record and, on applicable jobs, before-and-after blower-door numbers. Blown-In Insulation in Terrell Hills explains our process, pricing, and why we never blow new insulation over an unsealed attic floor.
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 Terrell Hills
Terrell Hills homes from the 1950s and 1960s often have vented crawl spaces with dirt floors and no moisture control, a combination that fails badly in San Antonio’s humid subtropical climate. We provide Crawl Space Encapsulation & Vapor Barrier as a complete system: sealing the ground, walls, and vents to stop the moisture cycle that degrades floor joists and drives indoor humidity. In Terrell Hills, we regularly find original pier-and-beam foundations with standing water after summer rains and fiberglass batts hanging sodden from the subfloor.
Crawl Space Encapsulation
Signs you need it
Your crawl space needs encapsulation if you smell mustiness indoors, see condensation on ductwork, or find insulation falling from the floor joists.
What it costs in Terrell Hills
Most crawl space encapsulations in Terrell Hills run between $4,500 and $12,000 depending on square footage, existing damage, and whether dehumidification is required.
How we do it
We install a reinforced polyethylene vapor barrier across the dirt floor, seal foundation vents, apply closed-cell spray foam to walls, and add a mechanical dehumidifier sized to the space.
Crawl Space Moisture Control
Signs you need it
Moisture control is needed when relative humidity in the crawl space stays above 70% year-round or mold appears on joists and subflooring.
What it costs in Terrell Hills
Crawl space moisture control systems in Terrell Hills typically range from $2,800 to $6,500 for dehumidifier installation, drainage improvements, and targeted sealing.
How we do it
We grade the floor to a sump or drainage point, seal perimeter penetrations, install a commercial dehumidifier with condensate pump, and monitor humidity until it stabilizes below 60%.
What Crawl Space Encapsulation & Vapor Barrier Costs in Terrell Hills
| Item | Typical range in Terrell Hills |
|---|---|
| Full crawl space encapsulation | $4,500 - $12,000 |
| Vapor barrier installation only | $1,200 - $3,500 |
| Dehumidifier & moisture control | $2,800 - $6,500 |
How long does crawl space encapsulation take in Terrell Hills?
Most Terrell Hills crawl space encapsulations take 2 to 4 days depending on access, square footage, and whether damaged joists need repair first. We provide a written schedule with your written price before work starts.
Will encapsulation lower my energy bills?
Encapsulation typically reduces HVAC runtime 10-20% by stopping the stack effect that pulls hot, humid air through the floor system in summer. Call (830) 549-6646 for a free estimate with blower-door baseline numbers.
Radiant Barrier Installation in Terrell Hills
Terrell Hills hip roofs with low slopes and minimal attic clearance create intense radiant heat gain in summer, often pushing attic temperatures above 140°F and forcing AC systems to run continuously. We install Radiant Barrier Installation to reflect that radiant energy back toward the roof deck, reducing the cooling load before it reaches your insulation layer. In post-war homes with restricted soffit ventilation, this is frequently the most cost-effective first step before adding insulation.
Attic Radiant Barrier
Signs you need it
You need an attic radiant barrier if your AC runs nonstop on sunny afternoons, ductwork in the attic feels hot to the touch, or second-floor rooms stay uncomfortably warm despite adequate insulation depth.
What it costs in Terrell Hills
Attic radiant barrier installation in Terrell Hills typically runs $1,800 to $4,200 for most homes in this market.
How we do it
We staple perforated radiant barrier foil across the bottom of rafters or lay it over existing insulation, maintaining air gaps and avoiding compression that would defeat the reflective surface.
Radiant Barrier Roof Deck
Signs you need it
Roof deck radiant barrier is indicated when you’re reroofing or when attic access is too restricted for under-rafter installation but the roof deck itself is exposed.
What it costs in Terrell Hills
Radiant barrier applied directly to the roof deck in Terrell Hills generally costs $2,500 to $5,500 depending on roof complexity and whether it’s done during a reroof or as a standalone retrofit.
How we do it
We apply radiant barrier sheathing or foil-faced decking during roof replacement, or spray low-emissivity coating to existing deck surfaces when the roof is not being removed.
What Radiant Barrier Installation Costs in Terrell Hills
| Item | Typical range in Terrell Hills |
|---|---|
| Attic radiant barrier (foil, under rafters) | $1,800 - $4,200 |
| Radiant barrier roof deck application | $2,500 - $5,500 |
| Radiant barrier with attic air sealing package | $3,200 - $6,800 |
Does radiant barrier work with blown-in insulation?
Radiant barrier and blown-in insulation work together: the barrier blocks radiant heat from the roof deck, while the insulation slows conductive heat transfer through the attic floor. We install barrier first, then add insulation without compressing the foil.
How much will my attic temperature drop?
A properly installed radiant barrier typically reduces attic temperature 20-35°F on peak summer days in Terrell Hills homes. Call (830) 549-6646 for a free assessment of your specific roof geometry and ventilation.
Insulation Removal & Replacement in Terrell Hills
Terrell Hills homes built in the 1950s and 1960s contain original fiberglass batts or early blown cellulose that has compressed, moisture-cycled, or been contaminated by rodents over 60+ years. We provide Insulation Removal & Replacement as a complete service: removal, disposal, sanitizing if needed, air sealing, and new insulation to modern R-value. We never add new material over failed old material, a shortcut that traps moisture and voids most manufacturer warranties.
Attic Insulation Removal
Signs you need it
Attic insulation removal is needed when batts are compressed flat, discolored black or brown, falling apart when touched, or emitting a musty or ammonia odor.
What it costs in Terrell Hills
Attic insulation removal in Terrell Hills typically costs $1.50 to $3.50 per square foot, with most homes in this market falling between $2,800 and $6,500 for complete removal and disposal.
How we do it
We use commercial vacuums with HEPA filtration to remove all loose and batt material, bag it for proper disposal, and photograph the exposed deck before any sealing or replacement begins.
Contaminated Insulation Removal
Signs you need it
Contaminated insulation removal is required when you find rodent droppings, urine staining, mold growth, or evidence of nesting material mixed with the insulation.
What it costs in Terrell Hills
Contaminated insulation removal and sanitizing in Terrell Hills generally runs $3,500 to $8,500 depending on contamination extent, attic square footage, and whether rodent proofing is needed.
How we do it
We suit in PPE, remove all contaminated material under negative air pressure, apply EPA-registered sanitizer to exposed surfaces, and provide a clearance photo record before any new insulation is installed.
What Insulation Removal & Replacement Costs in Terrell Hills
| Item | Typical range in Terrell Hills |
|---|---|
| Standard attic insulation removal | $2,800 - $6,500 |
| Contaminated insulation removal & sanitizing | $3,500 - $8,500 |
| Removal + air sealing + new insulation | $6,500 - $14,000 |
Can you remove insulation without making a mess?
Our removal process uses contained vacuum systems with HEPA filtration and protective floor coverings; the Documented Photo Record shows the condition before, during, and after. We treat your home as we would our own.
Do I have to leave during removal?
You do not need to leave during standard removal, though we recommend avoiding the attic access area for ventilation purposes; for heavily contaminated jobs, we may suggest brief absence during sanitizing. Call (830) 549-6646 to discuss your specific situation.
Attic Air Sealing in Terrell Hills
Terrell Hills homes from the mid-century building boom were constructed before modern air-barrier requirements, with top plates, can lights, and duct boots left open to the attic. We provide Attic Air Sealing as a standalone service or the mandatory first step of any insulation upgrade, because blowing new insulation over unsealed leaks simply hides the problem and guarantees poor performance. Every air sealing job includes before-and-after blower-door testing so you can see the exact CFM50 reduction.
Top Plate & Penetration Sealing
Signs you need it
Top plate sealing is indicated when your blower-door test shows high leakage at the ceiling plane, or when you feel drafts at outlets and switches on exterior walls during windy days.
What it costs in Terrell Hills
Top plate and penetration sealing in Terrell Hills typically runs $1,800 to $4,500 for most homes, depending on linear footage of walls and number of penetrations.
How we do it
We access the attic perimeter, seal all top plate gaps with fire-rated caulk or foam, and treat every wire, pipe, and chimney penetration with appropriate gasket or sealant matched to the material.
Can Light & Duct Boot Sealing
Signs you need it
Can light and duct boot sealing is needed when you see dust streaking around ceiling fixtures, feel conditioned air escaping into the attic, or find your HVAC filter dirtying unusually fast.
What it costs in Terrell Hills
Can light and duct boot sealing in Terrell Hills generally costs $800 to $2,500 depending on fixture count, duct configuration, and whether boots require reconstruction.
How we do it
We install fire-rated covers over non-IC can lights, seal all duct boots with mastic and mesh, and pressure-test the duct system to verify no remaining leakage at the attic interface.
What Attic Air Sealing Costs in Terrell Hills
| Item | Typical range in Terrell Hills |
|---|---|
| Top plate & penetration sealing | $1,800 - $4,500 |
| Can light & duct boot sealing | $800 - $2,500 |
| Full attic air sealing package | $2,500 - $6,500 |
What is a blower-door test?
A blower-door test is a pressurization reading that shows, in one number, how much air your building envelope is losing; we depressurize the house with a calibrated fan and measure CFM50, repeating after sealing to document your exact improvement.
Can air sealing alone reduce my bills?
Air sealing alone typically reduces heating and cooling costs 10-20% in Terrell Hills homes by stopping the uncontrolled airflow that drives HVAC runtime; most customers combine it with insulation for maximum effect. Call (830) 549-6646 for a free blower-door assessment.
Wall Insulation in Terrell Hills
Brick-veneer homes in Terrell Hills were typically built with empty wall cavities, a construction practice common through the 1960s that leaves homeowners with no thermal barrier at their largest surface area. We provide Wall Insulation using drill-and-fill methods that inject foam or dense-packed cellulose without removing interior drywall or exterior brick. This is increasingly requested as an add-on during full attic retrofits when homeowners realize how much heat their uninsulated walls are bleeding.
Injection Foam Wall Insulation
Signs you need it
Injection foam is indicated when exterior walls feel hot to the touch in summer, cold in winter, or when rooms have large temperature swings despite adequate attic insulation.
What it costs in Terrell Hills
Injection foam wall insulation in Terrell Hills typically costs $3.50 to $7.00 per square foot of wall area, with most homes running $5,500 to $14,000 for full exterior walls.
How we do it
We drill 2-inch holes at stud bay intervals, inject slow-rise foam that fills cavities without bowing drywall, then plug and texture-match the holes for paint-ready finish.
Drill & Fill Wall Insulation
Signs you need it
Drill-and-fill with dense-packed cellulose is preferred when you want a more permeable wall assembly or when existing cavity conditions suggest moisture management concerns.
What it costs in Terrell Hills
Dense-packed cellulose drill-and-fill in Terrell Hills generally runs $2.50 to $5.50 per square foot, with typical whole-home projects between $4,200 and $11,000.
How we do it
We remove a brick at the base and top of each cavity, blow cellulose to calculated density for no settling, then replace bricks with matched mortar.
What Wall Insulation Costs in Terrell Hills
| Item | Typical range in Terrell Hills |
|---|---|
| Injection foam (exterior walls) | $5,500 - $14,000 |
| Dense-packed cellulose drill & fill | $4,200 - $11,000 |
| Partial wall insulation (addition/renovation) | $2,000 - $5,500 |
Will drill-and-fill damage my interior walls?
Drill-and-fill from the exterior avoids interior disruption entirely; we access cavities through the brick veneer, and interior walls remain untouched with no dust or repair work needed inside.
How much does wall insulation improve comfort?
Wall insulation typically reduces exterior wall surface temperature 15-25°F in summer and eliminates the cold-wall radiation that makes rooms feel chilly in winter; most Terrell Hills customers report immediate, noticeable comfort improvement. Call (830) 549-6646 for a thermal imaging assessment.
Attic Cleaning & Rodent Proofing in Terrell Hills
Terrell Hills’s mature tree canopy and established neighborhoods support active rodent populations that exploit aging soffits and roof penetrations to access attics. We provide Attic Cleaning & Rodent Proofing as a complete service: removing contaminated material, sanitizing, sealing entry points, and restoring the attic to a clean, inspectable condition. This work is often a prerequisite for insulation replacement, and we document every step with photos.
Attic Sanitizing & Decontamination
Signs you need it
Attic sanitizing is needed when you smell urine or mustiness from the attic access, find droppings or nesting material, or see staining on the attic floor or insulation.
What it costs in Terrell Hills
Attic sanitizing and decontamination in Terrell Hills typically runs $1,500 to $4,500 depending on contamination extent, attic square footage, and whether insulation removal is required first.
How we do it
We remove all contaminated material, apply enzyme-based sanitizer to break down organic matter, fog with EPA-registered disinfectant, and provide a clearance photo record before any new work begins.
Rodent Proofing & Exclusion
Signs you need it
Rodent proofing is indicated when you hear scratching at night, find droppings in the attic, or see chew marks on soffits, vents, or roofline gaps.
What it costs in Terrell Hills
Rodent proofing and exclusion in Terrell Hills generally costs $1,200 to $3,800 for comprehensive sealing of all entry points, with ongoing monitoring available.
How we do it
We inspect the roofline, soffits, vents, and foundation with photo documentation, seal all entry points larger than 1/4 inch with rodent-proof materials, and install one-way exits where active infestation requires it.
What Attic Cleaning & Rodent Proofing Costs in Terrell Hills
| Item | Typical range in Terrell Hills |
|---|---|
| Attic sanitizing & decontamination | $1,500 - $4,500 |
| Rodent proofing & exclusion | $1,200 - $3,800 |
| Full attic restoration (cleaning + proofing + insulation) | $5,500 - $14,000 |
How do I know if rodents are in my attic?
Listen for scratching or scurrying at dawn and dusk, check for droppings near the attic access, and look for chew marks on soffit vents or roofline gaps; we provide a free inspection with photo documentation of any evidence we find.
Will rodents return after proofing?
Our exclusion work carries a written warranty: if rodents re-enter through any point we sealed, we return at no charge; the key is thorough initial inspection and materials that resist chewing and weathering. Call (830) 549-6646 to schedule.
Home Energy Audit in Terrell Hills
A home energy audit in Terrell Hills reveals exactly where your mid-century home is losing conditioned air and why your HVAC runs so hard in summer. We provide Home Energy Audit as a diagnostic service that prioritizes repairs by cost-effectiveness, so you know which improvements pay back fastest. Every audit includes a written report with blower-door baseline, thermal images, and a prioritized scope with prices for each recommended action.
Blower Door Test
Signs you need it
A blower-door test is indicated when your energy bills seem high for your home size, rooms have uneven temperatures, or you’re planning insulation work and want a baseline to measure improvement against.
What it costs in Terrell Hills
A standalone blower-door test in Terrell Hills typically costs $350 to $650, or is included at no additional charge when bundled with a full home energy audit.
How we do it
We install a calibrated fan in an exterior door, depressurize the house to 50 Pascals, and measure CFM50 while walking the interior with a smoke pencil to locate active leaks.
Thermal Imaging Inspection
Signs you need it
Thermal imaging is needed when you suspect missing or settled insulation, air leaks around windows and doors, or moisture intrusion in walls or ceilings that shows as temperature anomalies.
What it costs in Terrell Hills
Thermal imaging inspection in Terrell Hills generally runs $250 to $550 as a standalone service, or is included in our comprehensive energy audit package.
How we do it
We scan all interior and exterior surfaces with a FLIR camera during blower-door depressurization to exaggerate air leakage patterns, then annotate images with location and severity ratings.
What Home Energy Audit Costs in Terrell Hills
| Item | Typical range in Terrell Hills |
|---|---|
| Comprehensive home energy audit | $450 - $850 |
| Blower-door test (standalone) | $350 - $650 |
| Thermal imaging inspection (standalone) | $250 - $550 |
What does a home energy audit include?
A comprehensive audit includes blower-door testing, thermal imaging, insulation inspection, duct leakage testing, and a written report with prioritized recommendations and exact pricing for each improvement.
Is an audit worth it before insulation work?
An audit prevents spending on the wrong improvements; we’ve seen Terrell Hills homeowners quoted for full attic replacement when the actual problem was unsealed ductwork in a vented attic, a $2,500 fix versus a $12,000 unnecessary job. Call (830) 549-6646 to schedule.
Brands We Service in Terrell Hills
We source insulation and air-sealing materials from Owens Corning, Johns Manville, Knauf, and GreenFiber, with no proprietary product lock-in that limits your options. Our San Antonio office stocks common batt and blown-in sizes for same-day starts on Terrell Hills jobs, and we order spray foam components from Icynene and Demilec with 48-hour turnaround for custom applications. our brands
Pricing for Insulation in Terrell Hills, TX
| Service | Typical range in Terrell Hills |
|---|---|
| Attic insulation removal | $2,800 - $6,500 |
| Contaminated insulation removal & sanitizing | $3,500 - $8,500 |
| Full attic air sealing package | $2,500 - $6,500 |
| Injection foam wall insulation | $5,500 - $14,000 |
| Dense-packed cellulose drill & fill | $4,200 - $11,000 |
| Attic radiant barrier (under rafters) | $1,800 - $4,200 |
| Radiant barrier roof deck application | $2,500 - $5,500 |
| Crawl space encapsulation | $4,500 - $12,000 |
| Crawl space moisture control | $2,800 - $6,500 |
| Attic sanitizing & decontamination | $1,500 - $4,500 |
| Rodent proofing & exclusion | $1,200 - $3,800 |
| Comprehensive home energy audit | $450 - $850 |
Prices in Terrell Hills push higher when we encounter compressed original insulation requiring full removal before air sealing, or when hip-roof geometry restricts access and adds labor hours. Under Haven Standard Clause 1, you receive a written price before any work starts, with every line item explained and no open-ended allowances.
Neighborhoods We Serve in Terrell Hills
We serve all of Terrell Hills from our San Antonio dispatch office, with crews typically arriving within 30-45 minutes of scheduled appointment. Our work covers the full range of post-war housing stock found throughout the city.
- Old Terrell Hills
- Terrell Hills Estates
- East Terrell Hills
- Westover Hills adjacency
- Alamo Heights border zone
Service Area - Cities Near Terrell Hills
Our crews work throughout the San Antonio metro from the same dispatch base that serves Terrell Hills, providing the same written-price guarantee and documented results. We also regularly perform insulation and air-sealing work in Seguin, TX, New Braunfels, TX, Cibolo, TX, and Schertz, TX, with travel times and scheduling coordinated from our central office.
Serving Terrell Hills, TX - Our Local Coverage Area
We’re based in the Terrell Hills 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 Terrell Hills
Terrell Hills does not require a separate permit for insulation replacement in existing homes, though any electrical or HVAC modifications triggered by the work may need San Antonio-area permitting; we handle all required documentation and inspections as part of our written scope.
We typically schedule Terrell Hills assessments within 2-3 business days of your call, with work starting 5-10 days after written price approval; emergency situations like failed insulation after water damage can be expedited. A live person answers our phones 24/7.
Documented energy improvements with before-and-after blower-door numbers are increasingly requested by buyers in Terrell Hills’s $700K+ market; our written scope, warranty, and photo record transfer cleanly to new owners and support appraisal documentation.
Ready to see what’s actually happening in your attic? Call (830) 549-6646 for a free estimate. We’ll perform a blower-door test if applicable, show you photos of what we find, and deliver a written price before any work starts. Every job closes with a Documented Photo Record and, where applicable, before-and-after pressurization readings you can verify yourself.
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 Terrell Hills 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.