Fast, Reliable Blown-In Insulation Across Selma
Blown-in insulation in Selma, TX typically costs $1.80-$3.20 per square foot depending on material and prep work, and most slab-on-grade tract homes in Selma can be completed in a single day. If your attic still holds the original fiberglass batts from the 1997-2010 building boom, they’re likely compressed, moisture-damaged, and performing at half their original R-value. We dispatch crews to Selma from our San Antonio office and can usually inspect within 24-48 hours. Call (737) 227-6219 for a written price before any work starts.
Why Topside Attic Insulation Canyon Lake Is Selma’s Preferred Blown-In Insulation Company
We’ve worked in enough Selma attics to know what we’re going to find before we pull down the hatch. The subdivisions along Olympia Parkway, the Forum corridor, and the neighborhoods tucked between Loop 1604 and I-35 were built fast during the late-1990s and 2000s with minimum-code insulation that has now aged out simultaneously. That concentration of identical vintage housing means our crews recognize the failure patterns - paper-down batts, compressed R-19 performing like R-11, top plates never sealed - and we know how to fix them without guessing.
Our response time to Selma runs 24-48 hours for standard inspections, and we carry Owens Corning, GreenFiber, and Knauf materials so we’re not waiting on delivery. Every homeowner gets a written price before any work starts, a Documented Photo Record when we leave, and on air-sealing jobs, before-and-after blower-door numbers showing exactly how much conditioned air the house was losing. The 365-Day Done Right Promise applies to every completed job in Selma - if it’s not right, we make it right.
Our Blown-In Insulation Services in Selma
Blown-In Cellulose
Cellulose is our go-to for Selma retrofits. Treated with borate for fire and pest resistance, it packs tightly around framing and penetrations that batts leave exposed. On a slab-on-grade home off Olympia Parkway, our crew found the original Owens Corning faced batts flipped paper-down and compressed to roughly half thickness, with the paper acting as a moisture cap. We removed and bagged the compromised batts, air-sealed the top plates and can lights, then blew GreenFiber cellulose to R-38-plus to restore loft and stop the vapor trap. Most Selma attics run 1,200-1,800 square feet and take one day for removal, sealing, and blow.
Blown-In Fiberglass
For homeowners who prefer fiberglass, we blow Owens Corning AttiCat or Knauf Jet Stream - loose-fill products that don’t carry cellulose’s slight settling over decades. Blown-in fiberglass works well in Selma attics where the original batts were removed and the deck is clean, or as a top-up over existing loose-fill that still has integrity. It’s lighter than cellulose, which matters in older truss designs. We still air-seal first. Always.
Dense-Pack Wall Insulation
Selma’s slab-on-grade tract homes have 2×4 exterior walls with no insulation in many cases, or batts that slipped and left gaps. Dense-pack cellulose fills those cavities at 3.5 pounds per cubic foot - dense enough to resist settling and slow air movement through the wall. After Winter Storm Uri froze pipes inside exterior walls across the city, we’ve done more dense-pack retrofits in Selma than anywhere else in our service area. We drill and fill from either interior or exterior, patch, and texture-match.
Blown-In Top-Up
Not every Selma attic needs full removal. If your existing loose-fill is dry, uncontaminated, and just thin, we can blow additional material to reach current code. But we test first. A blower-door test - a pressurization reading that shows, in one number, how much air your building envelope is losing - tells us whether the attic floor is leaking too badly to justify topping up. Under Haven Standard: Sealed first, then insulated. We don’t blow over a leaky attic floor.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Before
AfterTrusted Brands We Service in Selma
We stock Owens Corning, Knauf, and Johns Manville products for Selma jobs, sourced through standard distribution - no proprietary lock-in means we specify what’s right for the house, not what we’re obligated to sell. GreenFiber cellulose is our usual choice for Selma retrofits because it performs well in the humid, hot-attic conditions that dominate this market. Having materials on hand or available next-day from San Antonio distribution means we’re not delaying your job for freight.
Common Blown-In Insulation Problems We See in Selma Homes
- Paper-side-down faced batts trapping moisture. Selma’s volume builders installed faced fiberglass with the vapor retarder against the attic floor - wrong for Climate Zone 2’s hot-humid summers. The paper acts as a moisture cap, the batt sags, and R-value collapses. We see this in nearly every pre-2010 Selma attic we open.
- Compression and settling under extreme heat. Attic temperatures in Selma push 150-160°F in July and August. Twenty-year-old batts baked at those temperatures lose loft permanently. Original R-19 performs like R-11. Original R-30 performs like R-17. The homeowner pays for cooling that leaks straight through the ceiling.
- Zero air sealing at top plates and penetrations. The same builders who skimped on R-value skipped sealing entirely. Can lights, wire holes, chimney chases, and top plates leak conditioned air into the attic continuously. Blowing insulation over those leaks is like throwing a blanket over a window that’s still open.
- No radiant barrier on roofs that need it. Selma’s dark shingle roofs absorb massive radiant heat. Without a radiant barrier or reflective roof, that heat radiates through the decking and into the insulation, accelerating degradation and driving cooling loads higher than necessary.
Pricing for Blown-In Insulation in Selma, TX
Most blown-in insulation jobs in Selma run between these ranges:
- Blown-in cellulose (new installation, including air sealing): $1.80-$2.80 per square foot of attic floor
- Blown-in fiberglass (new installation, including air sealing): $2.00-$3.20 per square foot
- Dense-pack wall insulation: $2.50-$4.00 per square foot of wall area
- Blown-in top-up over existing sound insulation: $1.00-$1.60 per square foot
- Full batt removal and disposal: $0.60-$1.20 per square foot additional
A typical 1,500-square-foot Selma attic with full removal, air sealing, and cellulose to R-38 usually falls between $3,200 and $4,800. Jobs vary with access difficulty, contamination (rodent damage, moldy paper), and whether the attic needs decking removed. We give a written price before any work starts - no exceptions. Bring us a competing quote and we’ll give you a free second opinion, line by line. Call (737) 227-6219 for an exact quote on your house - estimates are free.
We Also Serve Cities Near Selma
Our crews work throughout the northeast San Antonio corridor, including Selma and the surrounding communities of Canyon Lake, Bulverde, New Braunfels, and Timberwood Park. Dispatch and scheduling are coordinated from our San Antonio office. If you’re unsure whether your home falls in our service area, call and we’ll confirm.
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 - Blown-In Insulation in Selma
Because your home was built between 1997 and 2010 by a volume builder who followed the common practice of that era: faced batts installed paper-side-down on the attic floor. In Climate Zone 2, that’s backward. The vapor retarder should face the heated living space in cold climates, but in hot-humid Texas it traps Gulf moisture against the attic deck. Two decades of that has compressed your batts and rotted the paper facing. Call (737) 227-6219 and we’ll inspect - estimates are free.
We almost always remove them first. Paper-down batts in Selma attics are typically moldy, compressed, and trapping moisture. Blowing new insulation over that material buries the problem and can lock in humidity that damages your deck over time. Under Haven Standard: we document what we find with photos, bag the compromised material, and start from a clean deck. The written scope specifies removal or non-removal before anyone lifts a tool. Call (737) 227-6219 for a written price - estimates are free.
Current Texas energy code calls for R-38 minimum in attics, and we specify R-38 to R-49 for Selma retrofits. The original R-19 to R-30 batts in your 1997-2010 home were below code even when new; after compression and moisture damage, they’re performing at roughly half that. Our written scope specifies the target R-value, the material, and the installed depth before any work starts. Call (737) 227-6219 for an exact specification for your attic - estimates are free.
It helps significantly if the pipes are in exterior walls or near the attic floor, but it’s not the complete solution. During Uri, Selma’s thin-wall cavities and unsealed attic planes let cold penetrate fast. Dense-pack wall insulation slows that heat loss, and a properly sealed and insulated attic reduces the stack effect that pulls cold air through the house. For pipes in exterior walls, we often recommend dense-pack combined with strategic air sealing. The blower-door test before and after shows the improvement in a single number. Call (737) 227-6219 to discuss your specific risk points - estimates are free.
One day for most homes in the 1,200-2,000 square foot range. A crew of two arrives, sets containment, removes compromised batts (typically 2-3 hours), air-seals top plates, can lights, and penetrations (2-3 hours), then blows cellulose to specified depth (2 hours). You get a Documented Photo Record, the written scope, and on jobs with air sealing, before-and-after blower-door numbers before we leave. Call (737) 227-6219 to schedule - estimates are free.
Ready to fix the insulation that came with your house? Call (737) 227-6219 for a free estimate. We’ll inspect your attic, run a blower-door test if air sealing is involved, and give you a written price before any work starts. Under Haven Standard: Have it in writing.
Written by Wes Okafor, Owner at Topside Attic Insulation Canyon Lake, serving Selma since 2016.