Fast, Reliable Blown-In Insulation Across Selma
Most blown-in attic insulation jobs in Selma run $1,800-$3,400 for a full top-off with air sealing, and our crews can typically assess your attic and deliver a written price the same day you call. We know the Ridge at Selma, the neighborhoods along Lookout Road, and the brick-veneer tracts near the I-35 corridor - homes built during the 1990s through 2010s that are now hitting the age where original insulation has settled and compressed. Dispatch and scheduling run through our San Antonio office, but the crew that arrives at your Selma door knows these attics. Call (830) 402-5240 and a live person picks up, 24/7.
Why Topside Attic Insulation Schertz Is Selma’s Preferred Blown-In Insulation Company
We’ve sealed and insulated more than 9,000 homes since 2016, and a significant share of those have been in the Selma-Schertz-Cibolo corridor where the housing stock is remarkably consistent. Selma customers leave reviews that mention the same thing: we show the blower-door numbers, not just promise results. Our response time to Selma neighborhoods averages under 45 minutes from dispatch, and we don’t book vague arrival windows - under Haven Standard, you get a named technician and a text when they’re on the way.
What separates us in Selma specifically is that we understand the 15-30 year old tract home. These houses were insulated to pre-IECC 2009 minimums. The original blown fiberglass has settled. The top plates were never sealed. We’ve opened enough Selma attics to know exactly what we’ll find before we pull the hatch. That local pattern recognition means faster assessments, accurate written prices, and no surprises once work starts.
Every job closes with a Documented Photo Record and, on applicable work, before-and-after blower-door readings so you can verify the air-sealing result in one number. The 365-Day Done Right Promise applies to all completed work in Selma - if it’s not done right, we make it right.
Our Blown-In Insulation Services in Selma
Blown-In Cellulose
Cellulose handles Selma’s heat better than old fiberglass. We source from GreenFiber and other manufacturers - no proprietary lock-in - and blow it to a uniform depth across the attic floor after we’ve sealed every penetration. In Selma’s vented attics, where summer temperatures spike past 140°F, cellulose’s denser pack and treated fire resistance outperform settled batts. Most Selma attic cellulose top-offs run $2,200-$3,800 depending on square footage and the extent of air sealing required.
Blown-In Fiberglass
We install Owens Corning and Johns Manville blown fiberglass for homeowners who prefer the material or need to match existing insulation for warranty or aesthetic reasons. In Selma, blown fiberglass makes sense when the original layer is in decent shape and just needs augmentation. We never blow new material over an unsealed attic floor - that’s Haven Standard. The price range for fiberglass top-offs in Selma tract homes typically falls between $1,800-$3,200.
Dense-Pack Wall Insulation
Selma’s 1990s-2010s 2×4 framed walls were built with code-minimum fiberglass batts that have compressed, settled, or were never properly installed behind the drywall. Dense-packing blows cellulose into the closed cavity at pressure, filling gaps the original batt left behind. We dense-packed a wall cavity near the I-35 frontage that had nothing but compressed batt remnants behind the drywall - the homeowner felt the difference that same winter. Dense-pack wall work in Selma runs $1,400-$2,600 for a typical single-story tract home, depending on wall area and access.
Blown-In Top-Up
This is the defining Selma job. Original blown fiberglass from the 1990s and 2000s has settled well below its labeled R-value, leaving bare joist tops and thermal bridging across the ceiling plane. A top-up isn’t just adding material - we remove debris, air-seal the attic floor, then blow to the depth that achieves the target R-value for our climate zone. In the Ridge at Selma tract off Loop 1604, our crew opened a vented attic in a mid-1990s brick-veneer home where the original blown fiberglass had settled to a shallow, patchy blanket barely covering the joists. We air-sealed the top plates and can lights first, then blew GreenFiber cellulose in to a uniform depth, and the homeowner immediately noticed the upstairs rooms stopped baking by mid-afternoon. Selma top-ups with air sealing typically range $2,000-$3,400.
What happens when you call
- 1
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 stock and install materials from Owens Corning, Johns Manville, GreenFiber, and Demilec - brands with established distribution in the San Antonio metro, which means no multi-week waits for Selma jobs. Our crews carry common densities and blower settings for each manufacturer’s spec, so we match the material to your home’s condition rather than forcing a one-product approach. If your existing attic has Owens Corning fiberglass and you want to maintain continuity, we can. If you want the thermal performance and air-sealing synergy of GreenFiber cellulose, we do that too. Every material choice is documented in your written scope before work starts.
Common Blown-In Insulation Problems We See in Selma Homes
- Settled original fiberglass in 1990s-2000s tract attics. The blown fiberglass installed when these Selma homes were new has compressed to a fraction of its original depth. We regularly find attics in the Ridge at Selma and along Lookout Road where the insulation barely clears the joist tops, delivering a fraction of the labeled R-value.
- Unsealed attic penetrations bleeding conditioned air. Top plates, can lights, bath fan housings, and wire penetrations were rarely sealed in pre-IECC 2009 construction. In Selma’s humid subtropical climate, that gap network pumps conditioned air into the attic year-round and pulls hot, humid attic air into the living space.
- Wall cavities with compressed or missing batts. Selma’s 2×4 walls were originally insulated with fiberglass batts that sag, compress, or were cut poorly around electrical boxes. Dense-pack cellulose fills these voids and cuts convective looping that makes exterior walls feel cold in winter and radiate heat in summer.
- Thermal envelope failure during extreme events. Winter Storm Uri exposed how thin Selma’s tract-home envelopes are. Homes that had settled attic insulation and unsealed penetrations lost heat rapidly when temperatures dropped. The same envelope flaws that cause summer upstairs baking become emergency liabilities in a freeze.
Pricing for Blown-In Insulation in Selma, TX
Here’s what blown-in insulation costs in Selma’s market right now:
| Service | Typical Range |
|---|---|
| Blown-in fiberglass top-up (attic only) | $1,800 - $3,200 |
| Blown-in cellulose top-up with air sealing | $2,200 - $3,800 |
| Full attic replacement (remove + re-blow) | $2,800 - $4,600 |
| Dense-pack wall insulation | $1,400 - $2,600 |
| Air sealing only (before insulation) | $800 - $1,500 |
What moves you within these ranges: attic square footage, current insulation depth, whether we need to remove old material, and how many penetrations require sealing. Every Selma job starts with a written price - flat, itemized, delivered before anyone lifts a tool. No work starts without it. Bring us a competing written estimate and we’ll give you a Free Second Opinion, line by line. Call (830) 402-5240 to schedule.
We Also Serve Cities Near Selma
Our crews work the full corridor: Selma, Schertz, Cibolo, Universal City, and Converse. If you’re searching for Blown-In Insulation across these neighborhoods, the same crew, same materials, and same written-price protocol apply. Dispatch runs from our San Antonio office, but the truck that rolls to your door in Cibolo or Universal City carries the same blower-door rig and the same documentation standards.
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
Probably not. Original blown fiberglass from that era has settled and compressed after 15-30 years of Selma’s 140°F-plus attic heat cycling, and it was installed to pre-IECC 2009 minimums in the first place. We find bare joist tops and patchy coverage in most Ridge at Selma homes of that vintage. Call (830) 402-5240 for a free assessment - we’ll measure what’s actually there and give you a written price to fix it.
The insulation you have is likely performing well below its rated R-value due to settling, and more critically, your attic floor probably wasn’t air-sealed when the home was built. Unsealed top plates, can lights, and duct chases let conditioned air escape while pulling superheated attic air into the living space. We air-seal first, then insulate - that’s the Haven Standard approach that actually fixes the problem. Call (830) 402-5240 and we’ll show you the blower-door numbers.
Cellulose generally performs better in Selma’s extreme heat due to its higher density and better resistance to air movement, but fiberglass has its place if you’re topping up decent existing material or prefer the product. We stock both Owens Corning fiberglass and GreenFiber cellulose, and we’ll recommend based on what we find in your attic - not a script. Your written scope will specify the material, depth, and target R-value before work starts.
Yes. Dense-pack cellulose blown into Selma’s 2×4 wall cavities fills gaps left by compressed or poorly installed original batts, cutting the convective heat loss that makes exterior walls feel cold. We dense-packed a wall near the I-35 frontage that had virtually nothing behind the drywall but batt remnants, and the homeowner reported immediate comfort improvement. Dense-pack wall work in Selma typically runs $1,400-$2,600. Call for a written price.
Many do. The large-format retail and warehouse strip at that interchange was built in the early 2000s and now has aging roofline insulation, degraded spray foam, and poorly sealed loading-dock areas that drive energy costs higher than they should be. It’s a concentrated commercial upgrade opportunity that a contractor working only residential Selma neighborhoods would miss entirely. We assess commercial envelope performance with the same blower-door documentation and written-price protocol. Call (830) 402-5240 to discuss your building.
Written by Wes Okafor, Owner at Envelope Insulation Co., serving Selma and the San Antonio metro since 2016.