Fast, Reliable Blown-In Insulation Across Selma
Blown-in insulation in Selma typically runs $1.80-$3.20 per square foot of attic floor, with most complete retrofits on a 2,000-square-foot tract home falling between $2,200 and $4,800 depending on whether air sealing and baffle installation are needed. Our crews dispatch from the San Antonio office and usually reach Selma properties within 45 minutes during standard scheduling windows. Call (830) 529-7780 for a written price before any work starts - that’s Haven Standard Clause 1, no exceptions.
We’ve worked the same Selma subdivisions enough times to know the truss geometry before we pull into the driveway. The 2000s-2010s build era that defines this city means predictable problems and predictable fixes, which is why we can give you a real number on the first visit.
Why Topside Attic Insulation Boerne Is Selma’s Preferred Blown-In Insulation Company
Our reputation in Selma was built house by house, mostly in the tract developments off I-35 and Lookout Road where neighbors talk. We’ve completed blown-in retrofits in The Retreat at Selma, Fox Grove, and several streets near Selma Parkway - enough that our crew leaders recognize the floor plans. Customers in Selma leave reviews mentioning the blower-door numbers we leave behind, not vague promises about “feeling warmer.”
Response time to Selma averages under an hour for scheduled appointments, and our dispatch team - a live person, 24/7 - routes crews from the San Antonio office without making you wait for a callback window. We don’t do voicemail loops.
The local knowledge that matters here is structural, not sentimental. Selma’s homes were built fast during the I-35 corridor boom, and the same national builders repeated the same shortcuts across subdivision after subdivision. We know where the top plates were left unsealed, where the low-heel trusses choke the eaves, and where the original R-30 batts have settled to R-15 or worse. That repetition is your advantage - we’ve already solved the problem on a house with your floor plan.
Our Blown-In Insulation Services in Selma
Blown-In Cellulose
We use GreenFiber blown-in cellulose on most Selma retrofits where the attic floor needs full restoration. Cellulose handles Climate Zone 2’s 150°F attic temperatures well, and its higher density per inch helps with both thermal performance and sound dampening from I-35 traffic. On a typical Selma tract home, we’ll strip settled fiberglass, foam the top plates and can light penetrations, install baffles at every low-heel truss eave, then blow cellulose to a uniform R-38. Most jobs finish in one day.
Blown-In Fiberglass
Blown-in fiberglass works for Selma homes that need a top-up rather than a full removal, or where the homeowner prefers the material. We stock Owens Corning and Johns Manville systems. The catch in Selma is the existing fiberglass that’s already there - if it’s compressed or uneven, blowing more on top just buries the problem. We inspect first. If the substrate is salvageable, we’ll level it, seal the air leaks, then blow new fiberglass to the target depth. If not, we recommend removal and a clean start.
Dense-Pack Wall Insulation
Selma’s 2000s-2010s tract homes were built with empty wall cavities - no insulation in the studs beyond what the vinyl siding and half-inch sheathing provide. Dense-pack cellulose or fiberglass fills those cavities through drilled access holes, typically from the exterior. It’s a slower process than attic work, but for Selma homeowners who’ve already addressed the attic and still feel radiant heat through the walls, it’s the logical next step. Pricing runs higher per square foot due to labor intensity; we’ll give you the written number after a walk-through.
Blown-In Top-Up
Not every Selma home needs a full teardown. Some attics have decent air sealing and reasonably level fiberglass, just not enough depth for current comfort standards. A blown-in top-up adds 4-8 inches of cellulose or fiberglass to bring the assembly to R-38 or R-49. We still inspect the eaves for blocked soffit ventilation - the low-heel truss problem doesn’t go away just because you’re adding less material. A top-up in Selma typically costs $1,200-$2,400, versus $2,800-$4,800 for full removal and replacement.
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.
Trusted Brands We Service in Selma
We source blown-in materials from Owens Corning, Johns Manville, and GreenFiber - no proprietary lock-in that limits your options or inflates the price. Our San Antonio warehouse stocks cellulose and fiberglass in the weights and blower configurations we use most often on Selma jobs, so we’re not waiting on a delivery to finish your attic. If you have a preference based on prior research or a neighbor’s experience, we’ll use it and show you the spec sheet. The brand matters less than the installation detail in Selma’s climate, but you should know exactly what you’re getting.
Common Blown-In Insulation Problems We See in Selma Homes
- Settled builder-grade R-30 fiberglass compressed to effective R-15. The original batts in Selma’s 2005-2015 homes were installed to code minimum and have degraded under a decade or more of 150°F attic heat. We measure the actual depth and R-value during inspection; homeowners are usually surprised how thin the material has become.
- Unsealed top plates and can light penetrations pulling conditioned air upward. Selma’s volume builders didn’t foam or caulk the joints where interior walls meet the attic floor. In Climate Zone 2, that gap acts like a chimney all summer, driving up cooling run time and attic temperature simultaneously.
- Low-heel open-web trusses blocking soffit ventilation after careless blown-in installation. Without baffles, insulation drifts into the eave and chokes airflow. We’ve seen roof decks in Selma running 20°F hotter than they should because the soffit intake is buried. The fix is mechanical, not material - baffles first, then blow.
- Post-Uri freeze damage revealing air-sealing failures in homes less than 15 years old. Winter Storm Uri caught Selma homeowners off guard because new construction was supposed to be “tight.” It wasn’t. The pipe bursts traced directly to attic bypasses and unsealed penetrations that a proper blown-in retrofit with air sealing closes permanently.
Pricing for Blown-In Insulation in Selma, TX
Most complete blown-in insulation jobs on a 2,000-square-foot Selma tract home run $2,200-$4,800. A blown-in top-up on the same footprint typically falls between $1,200 and $2,400. Dense-pack wall insulation, where applicable, adds $1,800-$3,500 depending on wall height and exterior access.
What moves the number: whether we remove existing material or blow over it; how many can lights and penetrations need sealing; whether every eave bay needs baffling (in Selma, the answer is usually yes); and your target R-value. We don’t guess. Our tech measures the attic, identifies the truss type, and delivers a written price with scope and warranty before anyone lifts a tool. Haven Standard Clause 1. Free estimates, free second opinions on any competing quote you bring us.
Call (830) 529-7780 to schedule. You’ll get the number in writing, not a callback.
We Also Serve Cities Near Selma
Our crews work throughout the northeastern San Antonio metro, including Selma and nearby Boerne, Fair Oaks Ranch, Scenic Oaks, and Helotes. Dispatch and scheduling are coordinated from our San Antonio office, with local crews serving each area. If you’re outside Selma city limits but in the corridor, the same written-price-first process applies.
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
Your R-30 batt has likely settled and compressed to an effective R-15 or lower after 10-15 years of Selma’s 150°F attic temperatures, and the top plates were probably never air-sealed at construction. Conditioned air leaks upward through the ceiling plane all summer while attic heat radiates down. We see this exact condition in nearly every 2005-2015 Selma tract home we inspect. Call (830) 529-7780 for a free estimate - we’ll measure the actual R-value and show you the blower-door number.
It limits unbaffled depth at the eave, not total attic performance. The low heel height on Selma’s pre-IRC-2012 open-web trusses means insulation will block soffit ventilation unless foam or rigid baffles are installed first. Our crew baffles every eave bay as standard practice, then blows to full R-38 depth across the ceiling plane. Without baffles, you’d get mold, hot roof decks, and wasted material. Call (830) 529-7780 and we’ll show you the truss geometry on your specific home.
Sometimes, if the existing fiberglass is level, dry, and not compressed below R-20. More often in Selma, we find the original batt uneven, dusty, and compressed by years of heat cycling, with unsealed air leaks underneath. Blowing new material over that just buries the problem. We inspect first and give you an honest recommendation - top-up or full removal - with a written price for either path. Free estimates: (830) 529-7780.
Yes, if air sealing is included as a prerequisite - which it always is on our jobs. The pipe bursts during Uri traced to attic bypasses and unsealed penetrations that let cold air infiltrate wall cavities and chase spaces. Blown-in insulation alone doesn’t stop air movement; sealing the top plates, wire penetrations, and plumbing stacks before insulating does. Our Selma customers who’ve had full retrofits report the attic stays closer to conditioned temperature during cold snaps. Call (830) 529-7780 to discuss your specific plumbing chase layout.
We measure actual insulation depth, inspect for moisture or rodent damage, and run a blower-door test if the homeowner wants the full picture - a pressurization reading that shows, in one number, how much air your building envelope is losing. If the existing material is level and the air leaks are minor, a top-up makes sense. If we find compressed batts, unsealed top plates, and blocked eaves - the usual Selma profile - we recommend full removal and proper rebuild. Either way, you get a written price before any work starts. Schedule at (830) 529-7780.
Written by Wes Okafor, Owner at Topside Attic Insulation Boerne, serving Selma and the northeastern San Antonio metro since 2016.