Fast, Reliable Blown-In Insulation Across Selma
Blown-in insulation in Selma, TX typically costs $1.80-$3.20 per square foot of attic floor, with most complete attic jobs running $2,400-$4,800 depending on accessibility and whether air sealing is needed first. Most Selma homes built during the 2000s-2010s I-35 corridor boom can be completed in one day, with crews dispatched from our San Antonio office and arriving in Selma neighborhoods within 45 minutes to an hour.
We know Selma’s housing stock because we work in it weekly. The Mesa Verde subdivisions off Old Wiederstein Road, the newer phases near Retama Parkway, the homes tucked between I-35 and Loop 1604 - these are overwhelmingly 15-25-year-old production builds with builder-grade insulation that has settled well below original spec. Our Blown-In Insulation team treats every Selma job as a performance retrofit, not a material dump. We start with a blower-door test, seal what leaks, then blow to the R-value you actually need for South Texas cooling loads. Call (830) 420-0953 to schedule - estimates are free, and the written price arrives before any work starts.
Why Topside Attic Insulation Converse Is Selma’s Preferred Blown-In Insulation Company
We’ve sealed and insulated over 9,000 homes since 2016, and a significant share of those have been in the I-35 corridor between San Antonio and New Braunfels. Selma’s concentration of 2000s-2010s tract homes makes it a unique retrofit market - one where the problems repeat block by block, and the solutions need to be documented, not guessed at.
Selma customers find us through referrals from neighbors in master-planned communities where the original builder-grade R-30 has degraded to R-19 or worse. Our three-star reviews get read alongside our five-star ones, which is fair - we want homeowners to see how we respond when something needs adjustment. Under our 365-Day Done Right Promise, we make it right if it’s not right.
Response time to Selma is typically same-day or next-day for standard calls, because our crews already know the area. We understand which permits pull from Bexar County and which from Guadalupe, which subdivisions have accessible attics and which were built with truss designs that complicate dense-packing. That local knowledge saves hours on every job.
Our Blown-In Insulation Services in Selma
Blown-In Fiberglass
Blown-in fiberglass is our most common Selma attic treatment, and for good reason. Owens Corning and Johns Manville loose-fill fiberglass handle the 150°F+ attic temperatures in Selma without the moisture-retention risks that can plague other materials in humid South Texas summers. We blow to R-49 or above - well past the R-30 that most Selma builders installed - because cooling-dominated climates return more value per extra R-value than heating-dominated ones. Every fiberglass job includes pre- and post-blower-door readings so you can see the air-sealing result in CFM50, not promises.
Blown-In Cellulose
Blown-in cellulose, typically GreenFiber treated with borate for fire and pest resistance, performs well in Selma’s older 2000s builds where we need to fill irregular joist bays or top up existing material. Cellulose has slightly higher density per R-value than fiberglass, which can matter in attics with complex geometry or limited blow depth. We don’t recommend cellulose for homes with active roof leaks or chronic humidity issues - we’ll tell you if that’s your situation during the free estimate.
Dense-Pack Wall Insulation
Dense-pack wall insulation is the Selma service we wish more homeowners knew to ask for. During the I-35 corridor construction boom, many Selma tract homes were built with fiberglass batts in walls that were never properly verified - voids behind drywall are common, and humid South Texas air migrates through those gaps, degrading what insulation is present. We dense-pack with cellulose at 3.5 pounds per cubic foot, filling the cavity completely without removing drywall, using access holes that we patch and texture-match. For homes near Retama Parkway and in the older Mesa Verde phases, this is often the single biggest comfort improvement available.
Blown-In Top-Up
Blown-in top-up is our highest-volume Selma service, and it’s straightforward: your attic has some insulation, but it’s settled, patchy, or insufficient for current Texas energy code. Most Selma homes with original 2000s-2010s builder-grade insulation are sitting at R-19 to R-22 effective, even if the label once said R-30. We remove debris and rodent contamination if present, air-seal the attic floor including top plates and can lights, then blow new material to bring the total assembly to R-49 or R-60 depending on your goals and budget. The written price covers the complete scope - no per-bag add-ons after we start.
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, Johns Manville, and Knauf insulation products for Selma jobs, with no proprietary lock-in that forces one material choice. Owens Corning loose-fill fiberglass is our default for attic top-ups in South Texas heat; Johns Manville performs well in dense-pack wall applications; Knauf materials are available when homeowners or their builders specify them. We source through standard distribution, so replacement or追加 material never involves a special order delay. Every bag is documented in your photo record, and we keep safety data sheets on file for any homeowner who wants to verify composition.
Common Blown-In Insulation Problems We See in Selma Homes
- Settled builder-grade fiberglass below effective R-19. The R-30 batts or loose-fill installed in 2005-2015 Selma construction have compressed and degraded through 15-25 years of extreme heat cycling. What reads as “has insulation” on a home inspection often performs like “barely insulated” on a blower-door test.
- Unsealed attic hatches and top plates creating thermal bypasses. Even homes with decent insulation depth lose massive conditioned air through gaps at the attic hatch, plumbing and electrical penetrations, and the top plate where wall drywall meets ceiling drywall. We seal these before blowing - always, not optionally.
- Smart garage door openers failing from attic heat radiating into attached garages. We were called to the Mesa Verde subdivision off Old Wiederstein Road where a 2008 builder-grade home had settled fiberglass leaving the attic at barely R-19. The homeowner’s MyQ smart opener kept timing out due to attic heat radiating down, and the garage door seals had shrunk from years of 100°F+ days. We dense-packed the walls with GreenFiber cellulose and blew in Owens Corning fiberglass to R-49, then re-sealed the attic hatch and door frame - the opener cycled smoothly and the August electric bill dropped noticeably.
- Wall cavities with unverified or incomplete insulation from rapid construction. Selma’s I-35 boom meant crews working fast, and dense-pack or batt verification was often skipped. We find voids behind drywall regularly, especially in homes built 2003-2010, where humid air has degraded what little insulation was present.
Pricing for Blown-In Insulation in Selma, TX
Most blown-in attic top-ups in Selma run $2,400-$3,800 for a typical 1,800-2,400 square foot tract home, assuming accessible attic space and standard air sealing included. Complete attic insulation removal and replacement with new blown-in fiberglass to R-49 typically ranges $3,800-$5,600. Dense-pack wall insulation for a full Selma home runs $4,200-$7,500 depending on wall area, interior or exterior access method, and texture-matching requirements.
What moves the price: attic accessibility (scuttle vs. pull-down stairs vs. no access), existing material condition (removal adds labor and disposal), air-sealing complexity (recessed can lights, chimney chases, multi-level top plates), and whether the home falls in Bexar or Guadalupe County for permit costs. We verify county before scheduling because the permit path changes crew scheduling and final inspection timeline.
Every estimate is free, written, and delivered before any work starts - Haven Standard Clause 1. No verbal quotes, no “we’ll figure it out when we get there.” Call (830) 420-0953 for your written price.
We Also Serve Cities Near Selma
Our crews work throughout the I-35 corridor northeast of San Antonio, including Selma and neighboring Converse, Universal City, Live Oak, and Windcrest. Dispatch and scheduling are coordinated from our San Antonio office, with local crews serving each area without the delay of contractors routing from Austin or further out.
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 Selma address could fall under either county, because Selma’s city limits straddle the Bexar-Guadalupe county line. We verify the parcel’s county through the appraisal district before scheduling, since the permit path changes everything from inspector contact to processing timeline. Call (830) 420-0953 with your address and we’ll confirm the permit requirement in advance - estimates are free.
Yes, a blown-in top-up is typically one of the highest-ROI improvements for a 2008 Selma home, because builder-grade R-30 fiberglass from that era has almost certainly settled to R-19 or lower after 15+ years of extreme heat cycling. In Selma’s cooling-dominated climate, every additional R-value returns more per dollar than in northern markets. We measure what you actually have before recommending depth - call (830) 420-0953 for a free assessment with blower-door testing included.
Yes, proper attic insulation and air sealing often resolves smart opener timeout issues in Selma homes where attic heat radiates into attached garages. The MyQ and similar openers have thermal cutoffs that trigger when ambient garage temperatures exceed their operating range, which happens regularly when unsealed attics bleed 150°F+ air downward. We address this by sealing the attic hatch and top plates, then blowing insulation to reduce radiant heat transfer - not by treating the opener as the problem. Call (830) 420-0953 to schedule - we document the before-and-after garage temperature when relevant.
Blown-in fiberglass handles Selma’s extreme attic heat and humidity better than cellulose for most attic applications, because fiberglass doesn’t absorb moisture and maintains loft under thermal cycling. Cellulose has higher density per R-value and fills irregular cavities more completely, which makes it our preference for dense-pack walls but a secondary choice for open attics with chronic humidity exposure. We stock both Owens Corning fiberglass and GreenFiber cellulose, and we’ll recommend based on your specific attic conditions - not a one-material-fits-all policy. Call (830) 420-0953 for material-specific pricing.
Yes, we dense-pack walls without drywall removal by drilling access holes at stud-bay intervals, blowing cellulose at 3.5 pounds per cubic foot to fill the cavity completely, then patching and texture-matching the holes. Most 2005 Selma homes have unverified wall insulation with voids behind drywall, so this method delivers significant performance improvement with minimal interior disruption. The written scope specifies hole count, patch method, and texture grade before work starts. Call (830) 420-0953 for a free assessment - we include thermal imaging to identify void locations when useful.
Written by Wes Okafor, Owner at Topside Attic Insulation Converse, serving Selma and the I-35 corridor since 2016 under The Haven Standard.