Insulation in Selma, TX
Crawl space encapsulation and vapor barrier work in Selma typically runs $3,200-$6,800 for a full encapsulation, with most jobs scheduled within 48 hours. Because Selma’s homes were built during the late-1990s through mid-2000s construction boom, the original building envelope was rarely sealed to modern standards, and crawl spaces were often left with thin vapor barriers or none at all. We treat air sealing as a hard prerequisite before any insulation goes in, and every job starts with a written price. Call (737) 227-6219 for a free estimate.
Why Selma Homes Are Different
Selma sits on the northeast fringe of San Antonio in IECC Climate Zone 2, where summer attic temperatures routinely push 150-160°F and Gulf humidity spikes drive moisture into poorly sealed building envelopes. The city’s housing stock is almost entirely slab-on-grade tract construction from roughly 1997-2010, clustered along the Forum and Olympia Parkway corridor, built with minimum-code fiberglass batts - typically R-19 to R-30 in attics - installed before Texas adopted stricter 2011 IECC energy codes requiring R-38+.
Many builders used faced fiberglass batts with the paper vapor retarder installed downward against the attic floor, the wrong orientation for this hot-humid climate. After two decades of compression, moisture trapping, and thermal cycling, that original insulation is now aging out simultaneously across the city. The February 2021 Winter Storm Uri freeze exposed how thin those envelopes had always been, with pipes freezing inside exterior walls that lacked adequate cavity insulation or air sealing.
Our Main Selma Services
Most Selma homeowners who call us start with one of these three services, though we handle the full building envelope.
Attic Insulation in Selma
Attic insulation in Selma usually means removing compressed, upside-down fiberglass batts and upgrading to R-38 or R-49 blown-in or spray foam systems that can handle the 150°F+ thermal load. We air seal the attic floor first - top plates, can lights, penetrations - then insulate, with before-and-after blower-door numbers on every job. Attic Insulation in Selma covers our full process and pricing.
Spray Foam Insulation in Selma
Spray foam insulation gives Selma’s aging tract homes a modern air barrier and thermal envelope in one application, critical for homes that were never sealed during original construction. We specify open-cell or closed-cell foam based on the cavity depth and moisture risk, with a written scope and written warranty before work begins. Spray Foam Insulation in Selma details applications for attics, walls, and rim joists.
Blown-In Insulation in Selma
Blown-in insulation is the most common retrofit for Selma’s attics because it fills over and around the existing compressed batts after air sealing is complete. We use Owens Corning, Johns Manville, or Knauf fiberglass or cellulose products, installed to a measured depth with density checks. Blown-In Insulation in Selma explains material selection and coverage calculations.
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 slab-on-grade dominance means true crawl spaces are less common than in older Hill Country towns, but homes with pier-and-beam additions or early construction near the Cibolo Creek drainage often have dirt-floored crawl spaces that were never properly sealed. The combination of Gulf humidity and clay soils creates a moisture drive that standard 6-mil poly sheeting cannot stop, which is why we specify full encapsulation systems with sealed seams and conditioned air when we handle Crawl Space Encapsulation & Vapor Barrier in Selma.
Crawl Space Encapsulation
Signs you need it
Musty odors rising through floor registers, visible mold on floor joists, or fiberglass batts hanging sodden from the subfloor indicate the existing vapor barrier has failed.
What it costs in Selma
Full crawl space encapsulation in Selma typically runs $3,200-$6,800 depending on square footage, pier count, and whether a dehumidifier or sump pump is required.
How we do it
We remove old insulation and debris, seal all wall vents, install 12-20 mil reinforced polyethylene across walls and floor with taped seams, seal the rim joist with closed-cell spray foam, and install mechanical dehumidification if moisture readings warrant it.
Crawl Space Vapor Barrier
Signs you need it
Dirt-floored crawl spaces with thin, torn, or displaced 6-mil poly sheeting allow ground moisture to evaporate directly into the floor system.
What it costs in Selma
Vapor barrier replacement alone in Selma ranges from $1,400-$2,800 for standard pier-and-beam footprints under 1,500 square feet.
How we do it
We grade the soil surface, lay 12-mil reinforced polyethylene with overlapped and taped seams, seal perimeter edges to foundation walls, and document the installation with photos for the customer’s record.
What Crawl Space Encapsulation & Vapor Barrier Costs in Selma
| Item | Typical range in Selma |
|---|---|
| Full encapsulation (walls, floor, dehumidifier) | $3,200 - $6,800 |
| Vapor barrier replacement (floor only) | $1,400 - $2,800 |
| Rim joist spray foam sealing | $800 - $1,600 |
How long does crawl space encapsulation take in Selma?
Most Selma encapsulations are completed in two to three days, with larger pier-and-beam footprints or sump pump installations extending to four days. We provide a written schedule with the price before work starts.
Will encapsulation fix my musty smell?
Yes, when the source is ground moisture evaporating into the crawl space; we verify this with humidity readings before recommending encapsulation over other solutions. Call (737) 227-6219 to schedule an inspection.
Radiant Barrier Installation in Selma
Selma’s attics reach 150-160°F on summer afternoons, and the original construction boom produced thousands of homes with zero radiant barrier protection. That thermal load radiates downward through the roof deck and ductwork, forcing HVAC systems to run longer and harder than necessary. We install Radiant Barrier Installation systems that reflect infrared heat before it enters the conditioned space, with measured attic temperature reductions documented on every job.
Attic Radiant Barrier
Signs you need it
Second-story rooms that stay 10-15°F warmer than the thermostat setting, or ductwork in the attic that feels hot to the touch, indicate excessive radiant heat gain.
What it costs in Selma
Radiant barrier installation in Selma attics typically ranges from $1,600-$3,400 for standard truss-roof homes between 1,800 and 3,000 square feet.
How we do it
We staple perforated aluminum foil across the underside of roof rafters or lay reflective decking on the attic floor, ensuring ventilation paths remain open and documenting the coverage area in the photo record.
Radiant Barrier Roof Deck
Signs you need it
Asphalt shingle roofs less than 10 years old that are already showing thermal degradation, or plans to re-roof, create the optimal window for roof-deck radiant barrier application.
What it costs in Selma
Roof-deck radiant barrier applied during re-roofing in Selma adds $1,200-$2,400 to the roofing scope, or $2,000-$4,000 as a standalone retrofit with decking access.
How we do it
We apply reflective foil-faced sheathing or liquid-applied low-emissivity coating directly to the roof deck, sealing seams and integrating with existing ventilation baffles for continuous airflow.
What Radiant Barrier Installation Costs in Selma
| Item | Typical range in Selma |
|---|---|
| Attic radiant barrier (rafter or floor install) | $1,600 - $3,400 |
| Roof-deck radiant barrier (retrofit) | $2,000 - $4,000 |
| Radiant barrier with attic air sealing package | $2,400 - $4,800 |
Does radiant barrier really lower attic temperature?
We document 20-35°F attic temperature reductions on Selma jobs, though actual HVAC savings depend on duct location and existing insulation levels; the photo record includes infrared images. Call (737) 227-6219 for a free assessment.
Can radiant barrier go over my existing insulation?
Yes, floor-applied radiant barrier installs directly over blown-in or batt insulation, but we first verify the existing insulation is dry and uncontaminated to avoid trapping moisture.
Insulation Removal & Replacement in Selma
Selma’s 20-to-25-year-old fiberglass batts have compressed, settled, and in many cases trapped moisture due to the paper-vapor-retarder-down installation common in the construction boom. When those batts are contaminated with rodent activity, mold, or simply exhausted beyond recovery, removal and replacement is the only path to a performing envelope. We handle Insulation Removal & Replacement with HEPA-contained extraction, full decontamination, and documented photo records of the cavity condition before new material goes in.
Attic Insulation Removal
Signs you need it
Fiberglass batts compressed to less than half their original thickness, visible water staining, or rodent droppings scattered across the attic floor indicate removal is necessary before any new insulation is effective.
What it costs in Selma
Attic insulation removal in Selma ranges from $1,400-$2,800 for standard 1,800-2,500 square foot homes, with HEPA containment and disposal included.
How we do it
We set up negative-air HEPA filtration, remove all existing material by hand and vacuum, treat the deck with antimicrobial if mold is present, and deliver photos of the clean cavity before replacement begins.
Contaminated Insulation Removal
Signs you need it
Strong ammonia odors from rodent urine, fungal growth visible on insulation surfaces, or pest control reports recommending insulation replacement after extermination.
What it costs in Selma
Contaminated insulation removal with full decontamination in Selma runs $2,200-$4,200 depending on contamination extent and whether the attic requires sanitizing and odor treatment.
How we do it
We deploy full PPE and HEPA-contained removal, apply enzymatic cleaners and antimicrobial treatments to the deck and framing, verify air quality with post-removal testing, and document every stage in the photo record.
What Insulation Removal & Replacement Costs in Selma
| Item | Typical range in Selma |
|---|---|
| Standard attic insulation removal | $1,400 - $2,800 |
| Contaminated insulation removal + decon | $2,200 - $4,200 |
| Removal + replacement with R-38 blown-in | $3,200 - $5,600 |
Do I have to leave during insulation removal?
No, our HEPA-contained extraction keeps living spaces isolated, though we recommend pets and sensitive individuals vacate during the removal phase as a precaution. Call (737) 227-6219 to schedule around your family’s needs.
How do I know if my insulation is contaminated?
We inspect for rodent droppings, urine staining, mold, and compressed moisture damage during our initial assessment, with photos provided so you can see what we found before deciding on removal.
Attic Air Sealing in Selma
Selma’s original construction prioritized speed over envelope tightness, leaving top plates unsealed, can lights venting directly into attics, and duct boots pulling 150°F air into the conditioned space every time the HVAC cycles. Air sealing is not an upsell at Envelope - it is the first step of every attic job, because blowing new insulation over a leaky floor wastes material and money. Our Attic Air Sealing work is verified with before-and-after blower-door tests, with the results published in your job record.
Attic Floor Air Sealing
Signs you need it
Dust streaks around ceiling register boots, visible gaps where drywall meets the top plate, or rooms that are consistently harder to heat and cool than others indicate attic floor leakage.
What it costs in Selma
Attic floor air sealing in Selma typically ranges from $1,200-$2,400 for standard tract homes, with blower-door testing included before and after.
How we do it
We seal all ceiling penetrations with fire-rated caulk and foam, apply gaskets to electrical boxes, seal the perimeter top plate with closed-cell foam, and run a blower-door test to quantify the reduction in air leakage.
Can Light & Duct Boot Sealing
Signs you need it
Can lights that are hot to the touch from the living space side, or supply registers that blow attic-temperature air for the first 30 seconds of HVAC operation, indicate unsealed penetrations.
What it costs in Selma
Can light and duct boot sealing in Selma runs $800-$1,600 as a standalone service, or is included in our attic floor air sealing package.
How we do it
We install fire-rated covers over non-IC-rated can lights, seal boot-to-drywall connections with mastic and mesh, and verify with smoke-pencil testing during the blower-door run.
What Attic Air Sealing Costs in Selma
| Item | Typical range in Selma |
|---|---|
| Attic floor air sealing (full package) | $1,200 - $2,400 |
| Can light & duct boot sealing | $800 - $1,600 |
| Attic air sealing + R-38 blown-in insulation | $2,800 - $5,200 |
What is a blower-door test?
A blower-door test pressurizes your home to measure total air leakage in CFM50 - cubic feet per minute at 50 pascals - and we provide the before-and-after numbers so you can verify the sealing result yourself. Call (737) 227-6219 to schedule testing.
Can air sealing alone lower my electric bill?
Yes, Selma homes with severe leakage often see 15-25% HVAC load reduction from air sealing alone, though we typically pair it with insulation upgrades for maximum performance.
Wall Insulation in Selma
Selma’s slab-on-grade tract homes were built with 2×4 exterior walls and minimal cavity insulation, often R-13 fiberglass batts that have settled or were never fully in contact with the studs. The February 2021 freeze proved how inadequate that envelope was, with pipes freezing in exterior walls that should have been protected. We install Wall Insulation using injection foam and drill-and-fill methods that don’t require interior demolition, with a written scope and documented photo record of every cavity filled.
Injection Foam Wall Insulation
Signs you need it
Exterior walls that are cold to the touch in winter, rooms with temperature swings of more than 5°F from the thermostat setting, or energy bills that spike during Selma’s summer heat waves.
What it costs in Selma
Injection foam wall insulation in Selma ranges from $3,200-$6,400 for standard 1,800-2,500 square foot homes, with pricing based on linear wall footage and cavity depth.
How we do it
We drill 5/8-inch holes through the exterior siding at stud-bay intervals, inject slow-rise foam that fills the cavity without bowing drywall, plug and seal the holes with color-matched materials, and verify fill with thermal imaging.
Drill & Fill Wall Insulation
Signs you need it
Existing walls with no insulation visible in outlet boxes, or homes built before 2011 with 2×4 construction that cannot meet modern energy code without cavity fill.
What it costs in Selma
Drill-and-fill with dense-pack cellulose or fiberglass in Selma runs $2,400-$4,800 for typical single-story homes, with two-story and complex layouts at the higher end.
How we do it
We remove a row of siding or drill through mortar joints, blow cellulose or fiberglass to a measured density that prevents settling, seal all penetration points, and provide thermal images showing the filled cavities.
What Wall Insulation Costs in Selma
| Item | Typical range in Selma |
|---|---|
| Injection foam wall insulation | $3,200 - $6,400 |
| Drill & fill (cellulose or fiberglass) | $2,400 - $4,800 |
| Exterior wall insulation with air sealing | $3,600 - $7,200 |
Will drill-and-fill damage my siding?
We remove and replace siding panels or drill through mortar joints with plugs that match existing materials, with photos of every repair included in the documented record. Call (737) 227-6219 for a free assessment of your wall type.
Can you insulate walls without removing drywall?
Yes, both injection foam and drill-and-fill methods access the cavity from the exterior, so interior walls remain untouched and the work is completed in one to two days.
Attic Cleaning & Rodent Proofing in Selma
Selma’s mature neighborhoods and proximity to greenbelt corridors mean rodent pressure on attics is constant, and the original fiberglass batts provide ideal nesting material once pests gain entry. Contaminated insulation is not just an efficiency problem - it is an indoor air quality issue, with particulates and odors circulating through the HVAC system. Our Attic Cleaning & Rodent Proofing service removes the contamination, seals every entry point, and delivers a documented clean cavity ready for new insulation.
Attic Cleanout
Signs you need it
Visible rodent droppings, nesting material compressed into insulation, or storage items in the attic that show gnaw marks and staining.
What it costs in Selma
Attic cleanout in Selma ranges from $1,000-$2,000 for standard debris and contaminated insulation removal, with HEPA containment and disposal included.
How we do it
We remove all insulation and debris under negative-air HEPA filtration, vacuum the deck and framing, apply antimicrobial treatment, and deliver photos of the clean attic before any restoration work begins.
Rodent Proofing & Exclusion
Signs you need it
Scratching sounds in walls or ceilings, droppings near attic access points, or recurring pest control visits that treat symptoms but never address the entry path.
What it costs in Selma
Rodent proofing and exclusion in Selma typically runs $800-$1,600 for standard single-family homes, with one-year warranty on all sealing work.
How we do it
We inspect the roofline, soffits, vents, and foundation with motion-activated cameras if needed, seal all entry points with rodent-resistant materials, install vent screening, and document the exclusion map in the photo record.
What Attic Cleaning & Rodent Proofing Costs in Selma
| Item | Typical range in Selma |
|---|---|
| Attic cleanout (debris + insulation removal) | $1,000 - $2,000 |
| Rodent proofing & exclusion | $800 - $1,600 |
| Full cleanout + proofing + new insulation | $3,200 - $6,000 |
How do I know if rodents are in my attic?
We inspect for droppings, gnaw marks, compressed nesting tunnels in insulation, and entry-point evidence, with photos provided so you can see what we found before authorizing any work. Call (737) 227-6219 for an inspection.
Will proofing keep rodents out permanently?
Our exclusion work carries a one-year warranty, though we also recommend trimming tree branches within 6 feet of the roofline and maintaining exterior bait stations as ongoing pressure management.
Home Energy Audit in Selma
A home energy audit is the starting point for every significant envelope improvement in Selma, because guessing at solutions for 20-year-old construction wastes money and often misses the actual problem. Our audits combine blower-door testing, thermal imaging, and duct leakage measurement to pinpoint where conditioned air is escaping and where heat is entering. We deliver a written report with prioritized recommendations and a Home Energy Audit that serves as the roadmap for any work we or another contractor performs.
Blower Door Test
Signs you need it
Rooms that never reach temperature, excessive dust, or energy bills that are 30% or more above comparable Selma homes indicate envelope leakage that a blower-door test can quantify.
What it costs in Selma
A standalone blower-door test in Selma costs $400-$600, or is included at no charge when bundled with a full home energy audit.
How we do it
We install a calibrated fan in an exterior door, depressurize the home to 50 pascals, measure the airflow in CFM50, and use smoke pencils and infrared cameras to locate the dominant leakage paths while the fan is running.
Thermal Imaging Inspection
Signs you need it
Visible temperature differences on walls or ceilings, rooms that are uncomfortable despite the HVAC running continuously, or suspicion of missing or settled cavity insulation.
What it costs in Selma
Thermal imaging as part of a full energy audit in Selma runs $300-$500, or $200-$350 as an add-on to another service visit.
How we do it
We scan all building envelope surfaces with a FLIR thermal camera during normal HVAC operation, identifying insulation voids, air leakage patterns, and moisture anomalies, with images annotated and included in the written report.
What Home Energy Audit Costs in Selma
| Item | Typical range in Selma |
|---|---|
| Full home energy audit (blower door + thermal + duct test) | $600 - $1,000 |
| Standalone blower-door test | $400 - $600 |
| Thermal imaging inspection | $300 - $500 |
What does a home energy audit include in Selma?
Our full audit includes blower-door testing, thermal imaging of the envelope, duct leakage testing, insulation inspection, and a written report with prioritized recommendations and estimated savings. Call (737) 227-6219 to schedule.
How long does an energy audit take?
Most Selma home energy audits take three to four hours for a thorough inspection and testing cycle, with the written report delivered within 48 hours of the visit.
Brands We Service in Selma
We source insulation and air sealing materials from Owens Corning, Johns Manville, Knauf, and Rockwool, with no proprietary lock-in that limits your options. Our San Antonio office stocks common densities and R-values for fast turnaround on Selma jobs, and we specify the right product for each application rather than pushing a single brand. See our brands for full material specifications.
Pricing for Insulation in Selma, TX
| Service | Typical range in Selma |
|---|---|
| Crawl space encapsulation (full) | $3,200 - $6,800 |
| Crawl space vapor barrier replacement | $1,400 - $2,800 |
| Radiant barrier installation | $1,600 - $3,400 |
| Roof-deck radiant barrier | $2,000 - $4,000 |
| Attic insulation removal | $1,400 - $2,800 |
| Contaminated insulation removal | $2,200 - $4,200 |
| Attic air sealing | $1,200 - $2,400 |
| Injection foam wall insulation | $3,200 - $6,400 |
| Drill & fill wall insulation | $2,400 - $4,800 |
| Attic cleanout | $1,000 - $2,000 |
| Rodent proofing & exclusion | $800 - $1,600 |
| Home energy audit (full) | $600 - $1,000 |
Prices in Selma push toward the higher end when homes have complex rooflines, extensive contamination, or require specialized access equipment like scaffolding. Every job 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 Forum Parkway subdivisions to newer infill near Olympia Parkway. Most Selma appointments are scheduled within 24-48 hours, with emergency calls answered by a live person 24/7.
- Retreat at Olympia
- The Forum
- Selma Valley
- Woodbridge
- Olympia Estates
Service Area - Cities Near Selma
Our crews serve Selma from our San Antonio office, with regular routes through Canyon Lake, TX, Bulverde, TX, New Braunfels, TX, and Timberwood Park, TX. Scheduling is coordinated locally, and we carry the full material inventory needed for same-day starts on most standard jobs.
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
Most attic insulation and air sealing in Selma does not require a permit, though crawl space encapsulation and wall insulation may need city approval depending on scope; we handle all permit research and submission as part of our written scope. Call (737) 227-6219 to confirm requirements for your specific job.
We typically schedule Selma appointments within 24-48 hours for standard assessments, with emergency calls answered by a live person 24/7 and same-day response available for urgent situations like post-storm damage or failed HVAC related to envelope failure.
Selma’s larger subdivisions like The Forum and Retreat at Olympia have varying HOA guidelines; we review your specific covenants before proposing exterior-facing work like wall insulation or roof-deck radiant barrier, and document any required approvals in the written scope.
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
"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."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."Crawl space encapsulation done properly. Photographs of the vapour barrier at every seam, and the damp smell in the hallway is gone."
- Ainsley P.