Blown-In Insulation Cost - Same-Day Service, Done Right the First Time

How Much Does Blown-In Insulation Cost in Schertz?

Blown-in insulation in Schertz, TX typically runs between $1,800 and $4,200 for a standard attic job on a 1,500-2,500 sq ft home, with most homeowners landing around $2,400-$2,900 when air sealing is included. The final number depends on your current R-value, the square footage being treated, attic access conditions, and whether old or damaged insulation needs to come out first. Jobs that skip air sealing before blowing in new material are almost always cheaper up front and more expensive over time - because loose-fill insulation does not stop air movement, only slow heat transfer.

Blown-In Insulation Cost Breakdown in Schertz (2026)

The table below reflects current material and labor pricing in the Schertz market. Prices will vary by attic configuration, existing insulation depth, and how much prep work the job requires - but these ranges represent what a Schertz homeowner should realistically expect to budget in 2026.

A few things move the number meaningfully. Attics with pull-down stair openings, whole-house fan cutouts, or clusters of recessed can lights take longer to seal properly - and sealing them correctly adds real labor time. In Schertz neighborhoods like Live Oak Hills and Kensington Ranch, we see a lot of 2000s-era construction with older T8 can lights that were never air-sealed at installation. Each one is a direct channel between your conditioned living space and the attic. Sealing a cluster of 12-16 cans might add $200-$400 to the air-sealing portion of the job, but that’s the work that actually changes your blower-door number.

Materials sourced from Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, GreenFiber, and others depending on what the job calls for. We don’t have a proprietary product line, so material selection is driven by performance and fit - not margin.

What Affects Blown-In Insulation Pricing in Schertz

• Existing R-value and how far you need to go: Texas Energy Code requires R-38 minimum in climate zone 2 (Bexar County, which includes Schertz). Most homes built before 2006 in the area are sitting at R-11 to R-19. Getting from R-11 to R-38 means blowing in considerably more material than topping off from R-30 to R-38 - that difference can be $600-$900 on a mid-size attic.
• Attic configuration and access: A straightforward gable attic with a proper scuttle opening runs faster than a chopped-up hip roof with knee walls, multiple HVAC platforms, and low clearance on the eaves. Schertz has a significant mix of single-story slab homes from the 1980s and 1990s with tight eave lines, and those eave areas are where insulation depth almost always falls short. Getting material down to the correct depth right to the soffit baffles takes more time and equipment positioning.
• Air sealing scope: This is the variable most contractors don’t quote clearly. The number of penetrations – top plates, can lights, plumbing chases, electrical boxes, attic hatches – determines how long the sealing phase takes. A home with 8 can lights takes less time than one with 24. On Envelope jobs, air sealing is completed before any insulation goes in; it’s written into the scope, not added as an afterthought. The before-and-after blower-door numbers show whether it worked.
• Whether old insulation needs to come out: Insulation removal adds $600-$1,400 depending on volume and condition. In Schertz, homes that had rodent activity in the attic – common near the Cibolo Creek corridor and in older Randolph Pointe-area neighborhoods – often need a full removal and attic cleaning before new material goes down. Blowing new insulation over contaminated material is not something we do.
• Material choice: Blown-in fiberglass costs slightly more per square foot than cellulose, and mineral wool more than both. For most Schertz attics, fiberglass or cellulose will do the job. The choice matters more in specific applications – cellulose is denser and performs better in sealed applications, fiberglass settles less over time in open-blow attics. We’ll explain the tradeoff during the estimate, in writing.
• Season and timing: Summer in Schertz means attic temperatures above 140°F during working hours, which affects how long a crew can safely work up there per session. That can mean additional mobilizations for very large attics, which gets reflected in the quote. Jobs scheduled in fall and winter tend to move faster.

Schertz-Specific Factors Worth Knowing

Schertz sits in Guadalupe County but borders Bexar County, and that county line matters for a few practical reasons. Homes on the Bexar side of Schertz fall under San Antonio’s jurisdiction for some permit-related inspections, while Guadalupe County properties follow a different set of municipal requirements for new construction. For blown-in insulation on an existing home, permits are not typically required in either jurisdiction – but if you’re doing blown-in as part of a renovation that changes the building envelope structurally, check with the City of Schertz Building and Development Services before work starts.

The climate here is Hardiness Zone 8b to 9a, with summer heat that regularly pushes 100°F and humidity that can spike after Gulf moisture events move up the I-35 corridor. That combination drives one of the most common problems we see in Schertz attics: insulation that looks adequate by depth but has lost R-value because moisture has cycled through it over years. Cellulose in particular can settle and compact in humid conditions. A depth reading alone won’t tell you the real R-value if the material has absorbed moisture over time. A thermal scan combined with a blower-door test gives a more accurate picture, which is why we include those diagnostics in the estimate process on applicable jobs.

Homes in established Schertz subdivisions like Belmont Park, Northcliffe, and The Crossvine tend to be 1,800-2,800 sq ft with attic configurations that are generally accessible. Newer construction in Homestead and Fairways at Scenic Hills typically has better baseline insulation but often has undersized or improperly installed soffit baffles that compress the blown-in material near the eaves and reduce effective R-value in the zone you need it most. That’s something we check and document in photos during every visit.

How to Save on Blown-In Insulation in Schertz

The straightforward way to spend less on Blown-In Insulation services is to start with a real estimate – one that gives you a written price and a written scope before any commitment. That’s what we provide on every job, with no pressure to decide on the spot. Here’s what else makes a difference:

• Use the CPS Energy rebate program: CPS Energy offers rebates for qualifying attic insulation upgrades for customers in their service territory. Parts of Schertz fall within CPS territory; Guadalupe Valley Electric Cooperative (GVEC) serves other sections. Both offer some form of rebate or energy efficiency incentive depending on current program availability. Ask during your estimate – the rebate won’t show up on your quote automatically, and it can take $200-$600 off your net cost if your home qualifies.
• Get the air sealing done at the same time: Air sealing and insulation scheduled together on a single visit costs less than two separate jobs. Doing them separately doesn’t just add a second mobilization charge – it means the insulation goes in before the leaks are sealed, which reduces effectiveness. Combining them also means the blower-door readings apply to the complete envelope, not just one phase.
• Don’t skip the removal if it’s needed: Blowing over contaminated or moisture-damaged insulation might save $600-$1,400 on paper, but it means your new material is sitting on a compromised base. If the old insulation has settled to near-zero effective R-value, you’re paying for a full-depth installation without getting it. We’ll tell you honestly whether removal is necessary and why; the photos from the attic visit document what we found.
• Get a second opinion on any written estimate: We offer a free second opinion on any written estimate you’ve received from another contractor. Bring it to us. We’ll read it with you, line by line, and tell you what the numbers mean and whether the scope covers what the job actually requires. There’s no charge for that review and no obligation.
• Check the federal 25C tax credit: The Inflation Reduction Act’s Section 25C credit covers 30% of insulation and air sealing costs, up to $1,200 per year, for qualifying improvements in existing homes. The credit applies to materials, and in most cases to labor directly tied to the insulation work. Consult a tax professional for your specific situation – but for a $2,500 job, a 30% credit is $750 back on your federal return.

For a written estimate on your Schertz home, call (830) 402-5240. Estimates are free, the price is written before any work starts, and there’s no commitment required to get the number on paper.

What You Actually Get When the Job Is Done

A lot of insulation bids describe the work but not what you walk away with. Here’s what every Envelope job in Schertz includes by default, not on request:

• A written price and a written scope before anyone starts – Haven Standard Clause 1, no exceptions.
• A documented photo record of pre-work conditions, air sealing completed, and final insulation depth – delivered after every visit.
• Before-and-after blower-door readings on applicable jobs, so you can see the actual change in CFM50 (cubic feet per minute at 50 pascals of pressure – the standard measurement of how much conditioned air your building envelope was losing) rather than relying on a verbal assurance that things got tighter.
• A written warranty under the 365-Day Done Right Promise: if it’s not done right, we make it right.
• Material documentation showing what was installed, at what R-value, from which manufacturer.

The blower-door number is the one we hear about most from homeowners. A Schertz home we worked on in Northcliffe read 4,800 CFM50 before air sealing – roughly three times what’s considered tight for that home’s square footage. After sealing the top plates, 19 can lights, the attic hatch, and two plumbing chases, the post-seal reading was 2,600 CFM50. The blown-in cellulose went in after that. The homeowner had the numbers in writing, with photos, before we left the driveway. That’s the documentation standard we operate under for every job in Schertz.

Blown-In vs. Batt Insulation: Which Costs Less in Schertz?

For attic floor applications in existing homes, blown-in almost always costs less to install than batt insulation – and performs better over time. Batts require cutting around obstructions, and in an attic with trusses, ductwork, and multiple penetrations, gaps and voids are common. Blown-in material fills irregularly shaped spaces without leaving those gaps. For a 2,000 sq ft attic, blown-in cellulose typically runs $1,800-$2,600 installed; batt insulation in the same space is often $2,200-$3,200 because of the labor involved in fitting it correctly.

Dense-pack blown-in for walls is a different calculation – it’s more expensive per square foot than open-blow attic work because it requires drilling holes in the wall cavity, filling under pressure, and patching. But for bringing an older Schertz home up to current code performance, dense-pack wall insulation is often the only option that doesn’t require gutting the walls.

You can read more about the full range of options we offer, including what the process looks like from estimate to closeout, on our Blown-In Insulation in Schertz service page. Or visit our home for the full list of building-envelope services we offer across the area.

FAQs: Blown-In Insulation Cost in Schertz, TX

How much does blown-in insulation cost in Schertz for a typical 2,000 sq ft home?

For a 2,000 sq ft single-story home in Schertz, blown-in attic insulation with air sealing typically costs between $2,200 and $3,400. The range reflects variables like current insulation depth, the number of penetrations to seal, and whether existing material needs to come out first. Homes that only need a top-off from R-30 to R-38 run toward the lower end; homes starting at R-11 or below – common in Schertz construction from the 1980s and early 1990s – land toward the higher end because you’re blowing in significantly more material. Call (830) 402-5240 for a written price specific to your attic; the estimate is free.

Is it worth paying extra for air sealing before blown-in insulation?

Air sealing before blown-in insulation is not an extra – it’s the prerequisite that makes the insulation work. Blown-in material slows heat transfer (conduction) but does not stop air movement (infiltration). If your attic has open top plates, un-gasketed can lights, or plumbing penetrations, conditioned air passes through those gaps regardless of how much insulation is above them. In a Schertz home with 20 unsealed can lights, air sealing alone can move the blower-door number by 1,500-2,000 CFM50. That’s real conditioning load that disappears off your utility bill. The cost is $400-$900 for most homes; we document the before-and-after numbers so you can see what it changed.

How long does blown-in insulation last in a Schertz attic?

Properly installed blown-in fiberglass or cellulose in a Schertz attic typically maintains effective R-value for 20-30 years under normal conditions. The main threats are moisture intrusion (which compacts cellulose and reduces R-value), rodent activity (which displaces and contaminates material), and settling over time (more common with lower-density products). Fiberglass blown-in settles less than cellulose in open-blow attic applications. The easiest way to check is a depth measurement at multiple points across the attic floor; if depths have dropped significantly from installation specs, you’re losing R-value even if the material looks intact from the hatch.

Do I need a permit to add blown-in insulation to my Schertz home?

For adding or replacing blown-in insulation in an existing Schertz home, a permit is not typically required. The City of Schertz Building and Development Services generally classifies attic insulation as a maintenance activity rather than a structural modification. If the project is part of a larger renovation that changes the building envelope – such as converting an unconditioned attic to conditioned space – different rules apply. We’ll flag permit questions during the estimate if your project falls into a gray area, and we’ll document the work in photos regardless of permit status.

What’s the difference in cost between cellulose and fiberglass blown-in insulation?

In Schertz in 2026, blown-in cellulose runs $1.20-$1.80 per square foot installed, while blown-in fiberglass runs $1.40-$2.10 per square foot. On a 2,000 sq ft attic, that’s a difference of roughly $200-$600. Cellulose is denser, performs slightly better as a sound barrier, and is made primarily from recycled content. Fiberglass settles less over time in open-blow applications and is not susceptible to moisture-related compaction the way cellulose can be in humid climates – a relevant consideration given Schertz’s Gulf humidity exposure. We’ll give you the honest tradeoff for your specific attic during the estimate, and the material choice goes into the written scope.

Can I get blown-in insulation done the same week in Schertz?

In most cases, yes. For a standard attic job in Schertz, the typical lead time from estimate to installation is 3-7 days depending on schedule. The estimate itself can often be completed within 1-2 business days of contact. Air sealing and blown-in installation are done on the same visit for most jobs, so there’s one crew mobilization, one documentation package, and one close-out. Summer bookings from June through August run tighter because attic work is limited to early-morning hours due to heat; scheduling 2-3 weeks out during peak summer is common.

Key Takeaways

• Blown-in insulation in Schertz costs $1,800-$4,200 for most residential attic jobs, with the majority of homes falling in the $2,200-$3,400 range when air sealing is included.
• Air sealing – sealing top plates, can lights, and penetrations – must come before the blown-in material goes down. Doing it afterward means blowing insulation over unaddressed air leaks.
• CPS Energy and GVEC both offer efficiency rebates that can reduce net cost by $200-$600 for qualifying Schertz homes.
• The federal 25C tax credit covers 30% of qualifying insulation and air sealing costs, up to $1,200 per year, for existing homes.
• Before-and-after blower-door readings are included on applicable jobs – so you get a documented number, not just an assurance that the attic is tighter.
• Every estimate comes with a written price before any work starts, a documented photo record, and a 365-Day Done Right Promise. That’s not an upgrade; it’s the baseline.

Get a Written Price for Your Schertz Home

Wes Okafor and the Envelope Insulation Co. team have been writing prices before starting work – and documenting what the job looked like when finished – since 2016. More than 9,000 homes across the area have gone through that process, and every one of them received a written scope, a documented photo record, and a blower-door number on applicable jobs. No verbal estimates, no approximate figures that change on the day of installation.

If you have a written estimate from another contractor, we’ll review it with you at no charge under our Free Second Opinion offer. Bring the paper. We’ll read every line and tell you what it does and doesn’t cover.

To get your free written estimate for blown-in insulation in Schertz, call (830) 402-5240. A live person answers – not a voicemail, not a callback queue. The price you get will be in writing before anyone shows up at your home, and it won’t change when the crew arrives.

Written by Wes Okafor, Owner at Envelope Insulation Co. (operating as Topside Attic Insulation Schertz), serving Schertz and the surrounding area since 2016. Pricing reflects the Schertz, TX market as of 2026. Topside Attic Insulation Schertz offers free written estimates – call (830) 402-5240.