Fast, Reliable Attic Insulation Across Selma
Most Selma homes need full attic insulation replacement, not just a top-up, because the original faced fiberglass batts were installed paper-side down - a builder shortcut that traps Gulf humidity and collapses R-value in 150°F attic heat. A typical replacement in Selma runs $2,800-$4,500 for a 1,800-2,400 square foot home, and we can usually start within a week. Call (737) 227-6219 for a written price before any work starts.
We’ve worked in attics from the Forum Parkway corridor to Timberwood Park and along Olympia Parkway since 2016. Our crews dispatch from the San Antonio office and carry Owens Corning, Johns Manville, and Knauf materials on every truck. Selma’s 1997-2010 tract housing stock is aging out simultaneously, and we’re familiar with the specific shortcuts volume builders used during the Loop 1604/I-35 boom.
Why Topside Attic Insulation Canyon Lake Is Selma’s Preferred Attic Insulation Company
Our reputation in Selma is built on documented results, not promises. We’ve sealed and insulated 9,000+ homes since 2016, and every job closes with a Documented Photo Record and, on applicable work, before-and-after blower-door numbers that show exactly how much conditioned air the home stopped losing.
Selma homeowners read reviews carefully before calling. They find our three-star reviews as informative as our five-star ones - specific mentions of crews arriving on schedule, the written price matching the final invoice, and the blower-door report delivered at the end of the job. Under Haven Standard: Arrive on schedule, you get a named technician and a text when they are on the way.
Response time to Selma is typically 24-48 hours for standard appointments, with same-day availability for urgent cases like post-storm damage or failed insulation exposing pipes. A live person answers calls 24/7 - no voicemail loops, no callback windows measured in business days.
We know Selma’s housing stock intimately. The subdivisions along Olympia Parkway and Forum Parkway were built fast with minimum-code R-19 batts before Texas adopted stricter 2011 IECC energy codes requiring R-38+. That single-generation construction means we can diagnose your attic’s condition from the street address and year built, then confirm it with a visual inspection.
Our Attic Insulation Services in Selma

Attic Insulation Replacement
This is our most common Selma service, and for specific reason. A homeowner in the Olympia Parkway corridor called us after a $300 summer electric bill spike. In the attic, we found the original builder-grade R-19 batts installed paper-side down, now compressed to about half their thickness and damp to the touch. We removed the failed batts, air-sealed the attic floor, and blew in R-38 GreenFiber to bring the home up to current code.
Full replacement in Selma typically runs $2,800-$4,500 depending on attic square footage and accessibility. We never blow new insulation over failed, moisture-laden batts - that’s sealing future mold and rot into your building envelope. Every replacement includes removal of old material, air sealing of top plates and penetrations, and installation of new insulation to current IECC Climate Zone 2 standards.

Blown-In Attic Insulation
After we remove the failed original batts and complete air sealing, blown-in cellulose or fiberglass is our preferred installation method for Selma attics. Blown material fills irregular joist bays, covers recessed light housings, and reaches corners where batts leave gaps. We typically install R-38 to R-49 in Selma attics, using GreenFiber cellulose or Owens Corning fiberglass depending on your preference and budget.
A blown-in installation on a properly prepared attic floor in Selma runs $1.80-$2.40 per square foot, including air sealing. The material settles slightly after installation; we account for this in our initial depth measurement so you receive the labeled R-value, not just the installed thickness.

Attic Batt Insulation
For homeowners who prefer batt installation or have specific cathedral ceiling applications, we install unfaced fiberglass or mineral wool batts - never faced batts in attic floors, and never with the vapor retarder on the wrong side. In Selma’s hot-humid climate, the vapor retarder belongs on the conditioned-space side of the assembly, not buried in the attic floor where it traps moisture.
Batt installation is sometimes specified in Selma homes with finished attic spaces or specific framing conditions. We quote this separately when it applies, typically $2.20-$2.80 per square foot for R-38 unfaced batts with proper air sealing.

Attic Insulation Top-Up
We offer top-ups only after inspecting the existing insulation and confirming it’s dry, uncompressed, and properly installed. In Selma, we rarely recommend top-ups because the original paper-side-down batts are almost always compromised. Adding new material over damp, compressed batts is like pouring fresh concrete over a rotting foundation.
When a top-up is appropriate - typically in newer Selma homes or those where previous owners already addressed the original defect - we add blown material to achieve R-38 or R-49. Cost runs $1.20-$1.60 per square foot for the additional material and labor.

Attic Baffles & Ventilation Prep
Selma’s 150°F+ attic temperatures demand proper ventilation, and that starts at the eaves. We install baffles - properly, cardboard or foam channels that maintain airflow from soffit vents up through the attic - at every eave before adding insulation. Without baffles, blown material blocks soffit intake and creates stagnant, superheated attic zones that cook your shingles and your second-floor ceiling.
Ventilation prep is included in our full replacement and blown-in packages. Standalone baffle installation for homeowners addressing roof ventilation separately runs $18-$28 per linear foot of eave.

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
AfterTrusted Brands We Service in Selma
We source materials from Owens Corning, Johns Manville, and Knauf - no proprietary product lock-in that limits your options or inflates your price. Our Selma crews carry these materials on every truck, so we’re not waiting on a distributor run to start your job. Owens Corning fiberglass, Johns Manville mineral wool, and Knauf EcoBatt are stocked based on what performs in Selma’s specific climate conditions: high radiant heat, humidity spikes, and the thermal cycling that comes with Central Texas weather swings. We select the product for your application, explain why, and install it to the manufacturer’s specification - not a shortcut that saves us an hour and costs you R-value in year five.
Common Attic Insulation Problems We See in Selma Homes

- Faced batts installed paper-side down trap moisture. The vapor retarder faces the wrong direction in Selma’s hot-humid climate, so Gulf humidity condenses against the attic floor instead of venting outward. Over fifteen to twenty years, the batts sag, compress, and lose half their effective R-value. We find this in nearly every pre-2010 Selma home we inspect.
- 150-160°F attic temperatures bake original R-19 batts until they crumble. The fiberglass degrades, the paper facing embrittles, and the material settles into the joist bays, leaving top plates and recessed light housings as uninsulated thermal bridges. Your ceiling becomes a radiator in summer and a heat sink in winter.
- Winter Storm Uri exposed how thin the original envelope had become. Pipes froze in exterior walls across Selma not because of one cold night, but because attic insulation had already lost most of its effective R-value. The thermal boundary failed silently over years; the freeze made it visible.
- Volume builders skipped air sealing entirely during the 1997-2010 boom. Top plates, wire penetrations, can lights, and duct boots leak conditioned air directly into the attic. Even new insulation performs poorly when the air you’re paying to condition is escaping through a thousand small gaps. Our blower-door test - a pressurization reading that shows, in one number, how much air your building envelope is losing - quantifies this before we start and verifies improvement after we’re done.
Pricing for Attic Insulation in Selma, TX
We’re transparent about what attic insulation costs in Selma because Haven Standard Clause 1 requires a written price before any work starts - always. Here are the ranges we see on typical Selma homes:
| Service | Typical Range (Selma) |
|---|---|
| Attic Insulation Replacement (full removal, air seal, R-38 blown-in) | $2,800 - $4,500 |
| Blown-In Attic Insulation (new construction or prepped attic) | $1.80 - $2.40 / sq ft |
| Attic Batt Insulation (unfaced, installed) | $2.20 - $2.80 / sq ft |
| Attic Insulation Top-Up (where appropriate) | $1.20 - $1.60 / sq ft |
| Attic Baffles & Ventilation Prep | $18 - $28 / linear ft |
Factors that move Selma jobs within these ranges: attic square footage, accessibility (hatch size, headroom, whether we can stand or must crawl), quantity of recessed lights requiring sealing, and whether rodent damage or moisture remediation is needed before insulation goes in. We inspect, photograph, and deliver a written scope with a flat price - no per-hour uncertainty, no material upcharges after we start. Free Second Opinion on any written estimate: bring us a competing quote and we’ll read it with you. Call (737) 227-6219 to schedule.
We Also Serve Cities Near Selma

Our crews work throughout the northeast San Antonio metro, including Selma and nearby Canyon Lake, Bulverde, New Braunfels, and Timberwood Park. The same Haven Standard applies everywhere: written price before work starts, Documented Photo Record when we leave, and before-and-after blower-door numbers on applicable jobs. If you’re in one of these communities and your home was built during the same 1997-2010 boom, you’re likely facing the same insulation vintage and the same paper-side-down batt problem.
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 - Attic Insulation in Selma

The original faced fiberglass batts were installed paper-side down, which traps Gulf humidity against the attic floor and collapses the batt loft over fifteen to twenty years. Adding new insulation on top of damp, compressed material seals moisture and degraded fiberglass into your building envelope. We remove the failed material, remediate any moisture damage, air-seal the attic floor, and install new insulation to current code. Call (737) 227-6219 for a written price on replacement - estimates are free.
Look for three indicators: your home was built between 1997 and 2010, your summer electric bills have climbed steadily, and the original insulation is faced fiberglass with a kraft paper backing visible on the attic floor side. The paper should face the heated/cooled living space, not the attic. We confirm this during our inspection and show you photos before quoting. Call (737) 227-6219 to schedule a look.
Current IECC Climate Zone 2 code requires R-38 minimum, and we typically recommend R-38 to R-49 for Selma’s extreme radiant heat loads. The original R-19 batts were barely adequate when new and are now performing at roughly half that value due to compression and moisture degradation. A blower-door test - which we perform before and after replacement - shows how much conditioned air you’re losing and verifies the improvement. Call (737) 227-6219 to discuss what R-value makes sense for your home.
The insulation had lost most of its effective R-value through years of compression and moisture damage. A batt rated R-19 that’s compressed to R-10 or less and damp throughout cannot protect exterior wall cavities from extended sub-freezing temperatures. Uri was the stress test that revealed a silent failure. Homes where we had already completed full replacement and air sealing performed significantly better during the freeze. Call (737) 227-6219 to assess your attic’s current condition.
We remove all failed material and inspect the attic floor sheathing for mold, rot, or moisture staining. Minor surface moisture typically dries within 24-48 hours of removal with attic ventilation running; active mold or soft decking is remediated before new insulation goes in. We then air-seal all penetrations and install a proper insulation assembly - unfaced blown material or unfaced batts with the vapor retarder correctly placed - so moisture can dry to the attic rather than trapping against the structure. Call (737) 227-6219 for an inspection and written remediation scope.
Written by Wes Okafor, Owner at Topside Attic Insulation Canyon Lake, serving Selma since 2016.