Insulation in Selma, TX
Crawl space encapsulation and vapor barrier installation in Selma typically runs $2,800-$5,500 for a full encapsulation, with most jobs completed in one to two days. Selma’s 2000s-era tract homes were built fast during the I-35 corridor boom, and many sit on vented crawl spaces that trap the humid South Texas air rising from the Blackland Prairie clay soils. Call (830) 420-0953 for a written price before any work starts.
Why Selma Homes Are Different
Selma is almost entirely a product of the post-2000 I-35/Loop 1604 boom, meaning its residential stock is dominated by 2000s-2010s builder-grade tract homes now 15-25 years old - precisely the age when blown-in attic insulation has settled well below its original R-value. In Selma’s punishing South Texas heat, where attic temperatures routinely exceed 150°F in summer, these homes are hemorrhaging cooling energy and represent a concentrated, neighborhood-wide retrofit opportunity that a more established city would spread across generations.
Builder-grade insulation installed at or near minimum Texas code (R-30 attics) was the norm here, and those values have degraded significantly with age and extreme heat cycling. Because heating loads are minor and cooling loads are extreme, attic air-sealing and upgraded attic insulation (R-49 or above) return far more value per dollar here than in nearly any northern Texas market. Selma’s city limits also straddle the Bexar-Guadalupe county line, and insulation contractors must confirm which county a specific parcel falls in before pulling permits - a routine job can unexpectedly require a Guadalupe County permit rather than a Bexar County one, with different inspector contacts and processing timelines. We verify county jurisdiction during scheduling so there are no surprises.
Our Main Selma Services
These are the three services Selma homeowners call about most, each with its own dedicated page for deeper detail.
Attic Insulation in Selma
Most Selma attics we inspect hold insulation settled to R-19 or lower, half the current Texas recommended level for our cooling-dominated climate. We start with a blower-door test to measure air leakage, seal all top plates and penetrations, then install Owens Corning or Johns Manville blown-in fiberglass to R-49 or above. Every job closes with a documented photo record and updated blower-door numbers so you can verify the performance change. Attic Insulation in Selma has full pricing and process details.
Spray Foam Insulation in Selma
Spray foam makes sense in Selma for bonus rooms over garages, metal buildings, and homes with complex rooflines where traditional insulation leaves gaps. We use open-cell foam for attic floors and closed-cell for crawl spaces and rim joists, sourced from Icynene and Demilec. Every spray foam job in Selma gets a written scope specifying foam density, thickness, and coverage area before the rig arrives. Spray Foam Insulation in Selma covers applications and costs.
Blown-In Insulation in Selma
Blown-in fiberglass or cellulose is the most cost-effective upgrade for standard Selma attics with accessible hatch openings and relatively uniform joist bays. We blow GreenFiber cellulose or Knauf fiberglass over a sealed attic floor, never over unsealed air leaks - that’s Haven Standard practice. The work typically completes in four to six hours for a 2,000-square-foot home. Blown-In Insulation in Selma has full specifications.
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 Selma
Selma’s rapid-build 2000s subdivisions often sit on vented crawl spaces with thin 6-mil poly sheeting laid directly on damp clay soil - a vapor barrier in name only. By year fifteen, that sheeting is torn, displaced, and trapping humidity against floor joists. Crawl Space Encapsulation & Vapor Barrier is our primary service in Selma because the combination of Blackland Prairie clay, high water tables in pockets near Cibolo Creek, and extreme summer humidity creates conditions where unencapsulated crawl spaces breed mold, rot, and structural decay.
Crawl Space Encapsulation
Signs you need it
Musty odors rising through floor registers, sagging insulation batts hanging from joists, or visible mold on wood surfaces in the crawl space.
What it costs in Selma
Full crawl space encapsulation in Selma typically runs $2,800-$5,500 depending on square footage, existing moisture damage, and whether a dehumidifier is required.
How we do it
We remove all degraded materials, seal foundation vents, install a 20-mil reinforced vapor barrier sealed at all seams and walls, and condition the space with a dedicated dehumidifier tied to a condensate pump.
Crawl Space Vapor Barrier
Signs you need it
Torn or displaced 6-mil sheeting, standing water after rains, or white mineral deposits (efflorescence) on the foundation walls.
What it costs in Selma
Vapor barrier replacement alone in Selma typically runs $1,200-$2,400 for standard tract-home crawl spaces under 1,500 square feet.
How we do it
We remove the old poly, grade the soil for drainage, lay 12-mil or 20-mil reinforced barrier with sealed seams and wall extensions, then document the installation with photos.
What Crawl Space Encapsulation & Vapor Barrier Costs in Selma
| Item | Typical range in Selma |
|---|---|
| Crawl space vapor barrier (replacement) | $1,200 - $2,400 |
| Full encapsulation with dehumidifier | $2,800 - $5,500 |
| Encapsulation with insulation upgrade | $3,500 - $6,200 |
How long does crawl space encapsulation take in Selma?
Most Selma crawl space encapsulations finish in one to two days. Larger homes or those requiring structural repairs before sealing may extend to three days. We provide a written timeline with the price before work starts.
Will encapsulation lower my cooling bills?
Yes - sealed crawl spaces reduce the moisture load your HVAC must handle, and in Selma’s humidity, that translates to measurable compressor runtime reduction. We document pre- and post-encapsulation conditions so you can track the change.
Radiant Barrier Installation in Selma
Selma attic temperatures exceed 150°F in July and August, turning unconditioned attics into radiant ovens that reverse-heat ceiling drywall and force AC systems into constant overrun. Radiant barrier installation reflects that infrared heat back toward the roof deck rather than letting it penetrate living spaces. Radiant Barrier Installation is particularly effective in Selma because our cooling season runs six months and our roof pitches are typically shallow enough for proper installation access.
Attic Radiant Barrier
Signs you need it
Upstairs rooms that stay hot after sunset, AC running continuously after 8 PM, or ceiling surfaces that feel warm to the touch.
What it costs in Selma
Attic radiant barrier installation in Selma typically runs $1,100-$2,200 for standard 2,000-square-foot homes with accessible attics.
How we do it
We staple perforated radiant barrier foil across bottom chords of roof trusses, maintaining ventilation channels, then verify installation with photos.
Radiant Barrier Roof Deck
Signs you need it
New roof installation planned, or existing radiant barrier foil that has torn or detached from trusses.
What it costs in Selma
Radiant barrier applied directly to roof decking during reroof or retrofit runs $1,800-$3,200 in Selma depending on roof complexity.
How we do it
We apply radiant barrier paint or foil-backed sheathing to the roof deck underside, working around existing ventilation and structural members.
What Radiant Barrier Installation Costs in Selma
| Item | Typical range in Selma |
|---|---|
| Attic radiant barrier (foil, truss-mounted) | $1,100 - $2,200 |
| Radiant barrier roof deck application | $1,800 - $3,200 |
| Radiant barrier with attic air sealing | $2,400 - $4,100 |
Does radiant barrier work with existing insulation?
Yes - radiant barrier complements rather than replaces insulation, reflecting heat that fiberglass or cellulose would otherwise absorb. In Selma, the combination of R-49 insulation and radiant barrier typically outperforms either alone.
How long does radiant barrier last?
Properly installed perforated foil radiant barrier lasts 20-25 years in Selma attics. We inspect attachment points and document condition during every energy audit.
Insulation Removal & Replacement in Selma
Selma’s 2000s-era homes are hitting the age where original insulation is contaminated by rodent activity, water damage from roof leaks, or simple compression well below labeled R-value. Insulation Removal & Replacement is often the right starting point when we find multiple failure modes - you cannot seal over soiled insulation and expect performance. We remove, dispose, and replace in sequence, with a documented photo record at each stage.
Contaminated Insulation Removal
Signs you need it
Strong ammonia odors from rodent urine, visible droppings in insulation, or water-stained and compressed batt material.
What it costs in Selma
Contaminated insulation removal in Selma typically runs $1,500-$3,000 including disposal and sanitizing, before replacement insulation.
How we do it
We use commercial vacuums with HEPA filtration to remove all material, apply enzymatic sanitizer to exposed framing, and document the clean substrate before new insulation goes in.
Insulation Replacement
Signs you need it
Insulation settled below joist tops, visible gaps or thin coverage near eaves, or energy bills rising despite no equipment changes.
What it costs in Selma
Insulation replacement with new blown-in fiberglass to R-49 in Selma typically runs $1,800-$3,500 for standard attic footprints.
How we do it
We air-seal the attic floor first, then blow Knauf or Owens Corning fiberglass to uniform depth, installing rulers for verification and photographing coverage.
What Insulation Removal & Replacement Costs in Selma
| Item | Typical range in Selma |
|---|---|
| Contaminated insulation removal | $1,500 - $3,000 |
| Insulation replacement (blown-in, R-49) | $1,800 - $3,500 |
| Removal + replacement package | $3,200 - $5,800 |
Can you remove insulation with asbestos?
We do not handle asbestos-containing materials; if we suspect vermiculite or pre-1990 batt insulation, we recommend third-party testing before quoting removal. If asbestos is confirmed, we refer to licensed abatement contractors.
How do I know if removal is necessary or if I can add on top?
If the existing material is dry, uncompressed, and uncontaminated, we often air-seal and add new insulation over it. We make this determination during inspection and document our recommendation in writing before quoting.
Attic Air Sealing in Selma
Selma’s builder-grade homes were constructed with minimal attention to the building envelope - top plates, electrical penetrations, and duct boots were left unsealed because code didn’t require it and speed of construction mattered more. Attic Air Sealing is the single highest-ROI improvement for most Selma homes because our extreme cooling loads amplify every cubic foot of conditioned air lost to the attic. We seal first, then insulate - never the reverse.
Top Plate & Penetration Sealing
Signs you need it
Dust streaks around ceiling light fixtures, cobwebs concentrated at wall-ceiling joints, or rooms that never reach thermostat setpoint despite adequate insulation depth.
What it costs in Selma
Top plate and penetration sealing in Selma typically runs $800-$1,600 as a standalone service, or $400-$800 when bundled with insulation upgrade.
How we do it
We foam-seal all top plate gaps, wire and pipe penetrations, and chase openings with two-component polyurethane, then verify with blower-door test.
Can Light & Duct Boot Sealing
Signs you need it
Hot attic air blowing from ceiling registers when AC is off, or can lights that flicker from thermal expansion.
What it costs in Selma
Can light and duct boot sealing in Selma typically runs $600-$1,200 depending on fixture count and duct configuration.
How we do it
We install fire-rated covers over can lights, seal duct boots with mastic and mesh, and pressure-test the duct system where accessible.
What Attic Air Sealing Costs in Selma
| Item | Typical range in Selma |
|---|---|
| Top plate & penetration sealing (standalone) | $800 - $1,600 |
| Can light & duct boot sealing | $600 - $1,200 |
| Full attic air sealing with blower-door test | $1,400 - $2,600 |
Will air sealing make my house too tight?
No - Selma homes we test average 4,000-6,000 CFM50 before sealing, roughly double the recommended rate for our climate. Even after aggressive sealing, we rarely approach the minimum ventilation threshold.
How do you prove the sealing worked?
We provide before-and-after blower-door numbers on every air-sealing job - a pressurization reading that shows, in one figure, how much conditioned air your building envelope was losing before and after our work.
Wall Insulation in Selma
Selma’s 2000s tract homes were built with R-13 fiberglass batts in 2×4 exterior walls - minimal even by the standards of that era, and often poorly installed with compression gaps and missing cavity fill. Wall Insulation upgrades in Selma typically target the master suite, north-facing rooms, and bonus spaces over garages where thermal discomfort is most acute. We drill and fill from exterior or interior depending on siding type and homeowner preference.
Injection Foam Wall Insulation
Signs you need it
Exterior walls cold to the touch in winter, or hot in summer; rooms with two exterior walls that are consistently 5-8 degrees off from interior rooms.
What it costs in Selma
Injection foam wall insulation in Selma typically runs $2,500-$4,500 for a standard three-bedroom home with vinyl or hardboard siding.
How we do it
We drill 2-inch holes at stud-bay spacing, inject slow-rise foam to fill cavities completely, patch with matching material, and photograph every bay filled.
Drill & Fill Wall Insulation
Signs you need it
Existing R-13 batts with visible settling or gaps, or homeowner confirmation that walls were insulated during fast construction with known quality issues.
What it costs in Selma
Drill and fill with dense-pack cellulose in Selma typically runs $2,000-$3,800 for standard wall area in a 2,000-square-foot home.
How we do it
We remove minimal siding or interior drywall, dense-pack Rockwool or GreenFiber cellulose to 3.5 pounds per cubic foot, then restore finishes.
What Wall Insulation Costs in Selma
| Item | Typical range in Selma |
|---|---|
| Injection foam (full exterior walls) | $2,500 - $4,500 |
| Drill & fill dense-pack cellulose | $2,000 - $3,800 |
| Partial wall upgrade (2-3 rooms) | $1,200 - $2,400 |
Can you insulate walls without removing drywall?
Yes - from exterior through siding, or from interior through small access holes that we patch and paint. The method depends on siding type and whether the home has been re-sided since original construction.
Does wall insulation help with sound?
Dense-pack cellulose and Rockwool both reduce exterior noise transmission significantly. We note STC improvements in our written scope when sound attenuation is a project goal.
Attic Cleaning & Rodent Proofing in Selma
Selma’s mature oak canopy and proximity to greenbelt corridors create active rodent pathways onto and into homes, with attics providing sheltered nesting once entry points are found. Attic Cleaning & Rodent Proofing addresses both the contamination left behind and the structural access that allowed it - we do not clean without proofing, or proofing without documenting the entry path.
Attic Sanitizing & Decontamination
Signs you need it
Visible rodent droppings, compressed insulation trails, or musty odors detectable from the attic hatch before you enter.
What it costs in Selma
Attic sanitizing and decontamination in Selma typically runs $1,200-$2,400 including HEPA vacuuming, enzymatic treatment, and disposal.
How we do it
We remove all contaminated material, HEPA-vacuum exposed surfaces, apply commercial sanitizer, and photograph the clean attic before any new work.
Rodent Proofing & Exclusion
Signs you need it
Scratching noises in ceilings, gnaw marks on fascia or soffit, or recurring rodent activity after prior trapping efforts.
What it costs in Selma
Rodent proofing and exclusion in Selma typically runs $800-$1,800 depending on roof complexity and number of entry points identified.
How we do it
We inspect roofline, soffits, vents, and utility penetrations with photo documentation, seal all entry points with rodent-resistant materials, and provide the photo record showing what was found and closed.
What Attic Cleaning & Rodent Proofing Costs in Selma
| Item | Typical range in Selma |
|---|---|
| Attic sanitizing & decontamination | $1,200 - $2,400 |
| Rodent proofing & exclusion | $800 - $1,800 |
| Full attic restoration (cleaning + proofing + insulation) | $3,500 - $6,500 |
How do you find all the entry points?
We inspect from roof peak to foundation with photo documentation, focusing on construction gaps common in 2000s-era Selma homes - ridge vent gaps, loose soffit corners, and plumbing stack flashings. Every entry point is photographed before and after sealing.
Is rodent proofing a one-time fix?
Our exclusion work carries the 365-Day Done Right Promise - if rodents re-enter through any sealed point within one year, we return and correct at no charge. New damage from weather or chewing elsewhere is separate.
Home Energy Audit in Selma
A home energy audit in Selma identifies where your specific building envelope fails under actual operating conditions, not theoretical assumptions. Home Energy Audit is the right starting point when you’re unsure which improvement matters most - attic, walls, ducts, or air sealing - because our South Texas climate creates unique load patterns that generic advice misses. Every audit we perform in Selma includes blower-door testing and thermal imaging with written recommendations prioritized by cost-effectiveness.
Blower Door Test
Signs you need it
High cooling bills with no equipment diagnosis, rooms that vary by more than 5 degrees, or prior insulation work that didn’t reduce bills.
What it costs in Selma
Standalone blower-door testing in Selma typically runs $350-$550; it is included at no additional charge when bundled with any insulation or air-sealing project.
How we do it
We install a calibrated fan in an exterior door, depressurize the house to 50 Pascals, and measure CFM50 - the total air leakage rate in cubic feet per minute.
Thermal Imaging Inspection
Signs you need it
Hot or cold spots on ceilings or walls, suspicion of missing insulation in specific areas, or post-remodel concerns about envelope continuity.
What it costs in Selma
Thermal imaging inspection in Selma typically runs $250-$400 as a standalone service, or included with full energy audit.
How we do it
We scan all envelope surfaces with a FLIR camera during blower-door operation to amplify temperature differentials, then annotate images with location and recommended action.
What Home Energy Audit Costs in Selma
| Item | Typical range in Selma |
|---|---|
| Blower door test (standalone) | $350 - $550 |
| Thermal imaging inspection | $250 - $400 |
| Full home energy audit | $450 - $750 |
What do I get after the audit?
You receive a written report with blower-door numbers, thermal images with annotations, prioritized recommendations with estimated costs, and the documented photo record from inspection. No work proceeds without your written approval of a specific scope and price.
Can the audit cost be applied to work?
Yes - the full audit fee applies to any insulation or air-sealing project scheduled within 30 days. We credit it automatically; no coupon code or negotiation required.
Brands We Service in Selma
We source materials from Owens Corning, Johns Manville, Knauf, and Rockwool, with no proprietary product lock-in - we specify what performs for your specific condition, not what moves inventory. Most Selma jobs draw from stock held at our San Antonio office, with next-day availability on standard items. See our brands for full specifications.
Pricing for Insulation in Selma, TX
| Service | Typical range in Selma |
|---|---|
| Crawl space vapor barrier (replacement) | $1,200 - $2,400 |
| Full crawl space encapsulation | $2,800 - $5,500 |
| Attic radiant barrier (truss-mounted) | $1,100 - $2,200 |
| Radiant barrier roof deck application | $1,800 - $3,200 |
| Contaminated insulation removal | $1,500 - $3,000 |
| Insulation replacement (blown-in, R-49) | $1,800 - $3,500 |
| Full attic air sealing with blower-door test | $1,400 - $2,600 |
| Injection foam wall insulation | $2,500 - $4,500 |
| Drill & fill dense-pack cellulose | $2,000 - $3,800 |
| Attic sanitizing & decontamination | $1,200 - $2,400 |
| Rodent proofing & exclusion | $800 - $1,800 |
| Full home energy audit | $450 - $750 |
Prices in Selma trend toward the higher end when homes require county-specific permitting (particularly Guadalupe County parcels), when attic access is limited by low-clearance trusses, or when existing insulation contains contaminants requiring specialized disposal. Every job still begins with a written price before any work starts - Haven Standard Clause 1 - and we offer a Free Second Opinion on any written estimate you’ve already received.
Neighborhoods We Serve in Selma
We work across Selma’s full residential footprint, from the original I-35 corridor subdivisions to newer infill near Loop 1604. Most Selma appointments are scheduled within 24-48 hours of call, with dispatch coordinated from our San Antonio office.
- Retama
- The Ridge at Selma
- Woodbridge
- Selma Town Center area
- Cibolo Valley Ranch
Service Area - Cities Near Selma
Envelope Insulation Co. serves the full I-35 northeast corridor including Converse, TX, Universal City, TX, Live Oak, TX, and Windcrest, TX. Crews are routed daily from our San Antonio office, and we schedule across all five cities with the same written-price, documented-record standard.
Serving Selma, TX - Our Local Coverage Area
We’re based in the Selma 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 Selma
It depends on which side of the Bexar-Guadalupe county line your property falls. Selma straddles both counties, and permit requirements differ. We verify jurisdiction during scheduling and handle all permit applications as part of our standard process - no additional fee for routine permitting.
Most Selma homeowners are scheduled within 24-48 hours for inspections and estimates, and within one week for confirmed work. Emergency situations - active roof leaks into insulation, or HVAC failure traced to attic conditions - are prioritized same-day when possible. A live person answers calls 24/7 to coordinate.
Selma’s master-planned communities typically require architectural review only for exterior-visible changes like solar panels or siding modifications. Attic and crawl space work is generally interior and not subject to HOA approval, though we provide written scope documentation on request if your HOA asks for project description.
Ready to see what your home’s envelope is actually doing? Call (830) 420-0953 for a free estimate. We’ll provide a written price before any work starts, documented photo records throughout, and before-and-after blower-door numbers on every applicable job so you can verify the performance you paid for.
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 Selma Customers Say
"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."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.