Fast, Reliable Spray Foam Insulation Across Schertz
Spray foam insulation in Schertz typically costs $1,800-$4,500 for most residential applications, with garage ceiling and rim joist work landing on the lower end and full attic deck jobs on the higher end. Most Schertz homes we see were built between 2003 and 2022 with minimum-code blown fiberglass that was never air-sealed, so the real value is in correcting the original construction - not layering new material over a leaky envelope. Our crews dispatch from the San Antonio office and usually reach Schertz properties within 45 minutes to an hour. Call (830) 529-7780 and a live person will pick up, 24/7.
Why Topside Attic Insulation Boerne Is Schertz’s Preferred Spray Foam Insulation Company
We’ve sealed and insulated more than 9,000 homes since 2016, and a disproportionate share of our spray foam work happens in Schertz’s production-builder subdivisions - the same floor plans, the same deficiencies, subdivision after subdivision. Our Spray Foam Insulation in Schertz crews know which builder used unsealed can lights in which phase, where the top plates were left open, and how the garage ceiling drywall bows when 150°F attic air leaks through for a decade.
Schertz customers rate us highly because we publish before-and-after blower-door numbers on every applicable job - a pressurization reading that shows, in one figure, how much conditioned air the home was losing before and after the work. You’ll get a written price before anyone lifts a tool, a Documented Photo Record when the crew leaves, and the 365-Day Done Right Promise in writing. Under Haven Standard: Have it in writing.
Response time to Schertz averages under an hour from dispatch. We don’t do callback windows measured in business days - a live person answers the phone, and you’ll get a text when your technician is on the way with a name and ETA.
Our Spray Foam Insulation Services in Schertz
Closed-Cell Spray Foam
Closed-cell spray foam is our primary recommendation for Schertz’s Climate Zone 2A conditions - it delivers R-6.5 per inch, acts as its own vapor retarder, and doesn’t absorb Gulf humidity the way open-cell can when installed in marginal conditions. In Schertz’s 2003-2022 tract homes, we use closed-cell to seal garage ceiling perimeters, rim joists, and any attic-side application where the temperature delta between conditioned space and 140-160°F attic air is extreme. A typical closed-cell application in Schertz runs $2,200-$4,500 depending on square footage and access.
Garage Ceiling Spray Foam
This is the sub-service we perform most often in Schertz, and for specific reason. The subdivisions off the JBSA-Randolph corridor - Fox Grove, The Crossvine, Pecan Grove Estates - were built with garage ceilings that share attic space with the house but were never air-sealed at the top plates or can-light penetrations. Our crew sealed a 2009 DR Horton home where the garage ceiling’s drywall had bowed and stained from a top-plate air leak feeding 150°F attic air into the garage. We pulled the rock, closed up the top plates, can lights, and garage-ceiling perimeter with closed-cell spray foam, then reinstalled the ceiling and verified with a blower-door check. The homeowner’s CPS Energy bill dropped the following August, and the garage stopped cooking the parked car. Most garage ceiling jobs in Schertz run $1,800-$3,200.
Rim Joist Spray Foam
Rim joists - the band where the foundation meets the first floor - are the leakiest part of most Schertz homes’ thermal envelope, and builders in the 2003-2022 boom almost never sealed them. In Climate Zone 2A, unsealed rim joists draw humid Gulf air into wall cavities year-round, creating condensation points that show up as musty smells and high CPS Energy bills before any visible damage appears. We typically treat rim joists with closed-cell spray foam to R-10 to R-13, which blocks both air and vapor movement. Most Schertz rim joist jobs cost $1,200-$2,400.
Open-Cell Spray Foam
Open-cell spray foam has its place in Schertz, primarily in above-deck applications where thickness is available and vapor drive is managed separately. At R-3.6 per inch, it requires more depth to hit target R-values, and in Schertz’s humidity, we only specify it for roof decks with adequate ventilation strategy or in combination with closed-cell at critical junctions. It’s less expensive per board foot - typically $1,800-$3,800 for comparable coverage areas - but the total system cost must include the vapor management that closed-cell provides inherently.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
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 Schertz
We source spray foam materials from Demilec, Owens Corning, Johns Manville, and other established manufacturers - no proprietary product lock-in that limits your options or inflates price. For Schertz customers, this means we can match the right foam chemistry to the specific application rather than forcing a one-product-fits-all approach. Our San Antonio office stocks common closed-cell and open-cell formulations for fast turnaround on standard Schertz jobs, and we publish the manufacturer and product name in your written scope so you know exactly what was installed.
Common Spray Foam Insulation Problems We See in Schertz Homes
- Attic-side air leaks around top plates and can lights push 140-160°F attic air into the garage and living space - a pattern especially visible on streets near JBSA-Randolph where maintenance was deferred under rotating tenants. The drywall bows, the paint discolors, and the CPS Energy bill climbs every summer.
- Original R-30 blown fiberglass has settled to effective R-20 or below in these same-builder subdivisions, and Gulf-humidity-driven air movement through the vented attic quietly degrades its performance further each summer. The insulation “looks fine” from the attic hatch but fails to perform.
- Builder-grade open-cell or thin spot applications on rim joists and garage ceilings in Climate Zone 2A leave thermal bridges and condensation points that only show up as musty smells and high CPS Energy bills - not visible damage. By the time a landlord investigates, tenants have absorbed years of excess cost.
- Garage ceilings sharing attic space with conditioned areas were treated as afterthoughts in Schertz’s production-builder boom. Unsealed, they become conduits for superheated air, making the garage unusable for storage and radiating heat into adjacent bedrooms.
Pricing for Spray Foam Insulation in Schertz, TX
Most spray foam insulation jobs in Schertz fall into these ranges:
| Application | Typical Range |
|---|---|
| Rim joist (closed-cell) | $1,200 - $2,400 |
| Garage ceiling (closed-cell) | $1,800 - $3,200 |
| Attic floor/air sealing combo (open or closed-cell) | $2,800 - $4,500 |
| Full roof deck (open-cell with vapor management) | $3,500 - $6,000 |
What moves the number: access difficulty (crawl space vs. walk-up attic), square footage, whether we remove existing material first, and whether the job includes our full air-sealing package. Every Schertz job gets a Written Price Before Any Work Starts - Haven Standard Clause 1 - with flat price, written scope, and written warranty delivered before anyone lifts a tool. Bring us a competing quote; we offer a Free Second Opinion on any written estimate. Call (830) 529-7780 for your written price.
We Also Serve Cities Near Schertz
Our Spray Foam Insulation crews work throughout the San Antonio metro, including Universal City, Converse, San Antonio proper, and Bulverde. Same written price guarantee, same blower-door documentation, same 365-Day Done Right Promise - regardless of ZIP code.
Serving Schertz, TX - Our Local Coverage Area
We’re based in the Schertz 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 - Spray Foam Insulation in Schertz
Because the R-30 was installed over an unsealed attic floor, and hot air is leaking through top plates, can lights, and the garage-ceiling perimeter faster than the fiberglass can slow it. In Schertz’s Climate Zone 2A, 150°F attic air finds every gap. We seal first with closed-cell spray foam, then verify with a blower-door test so you can see the exact CFM50 reduction. Call (830) 529-7780 for a written estimate - estimates are free.
Yes, if it was built by a production builder in Schertz’s 2003-2022 boom, because “looks fine” almost certainly means R-30 blown fiberglass that has settled toward R-20 with zero air sealing. The visual inspection tells you nothing about air leakage, which drives 30-40% of cooling load in this climate. We start with a blower-door test - a pressurization reading that shows, in one number, how much air your building envelope is losing - so you have data before deciding. Call (830) 529-7780 to schedule.
Most of what we find in Schertz’s JBSA-Randolph rental corridor is fixable: unsealed top plates, settled blown fiberglass, leaky rim joists, and garage ceiling bypasses that dump attic air into conditioned space. Since tenants rotate out with PCS orders, landlords often don’t see the pattern until we document it with blower-door numbers and photos. We can provide a written scope and photo record that makes the case concrete. Call (830) 529-7780 - we’ll read any competing estimate with you as part of our Free Second Opinion.
We default to closed-cell for most Schertz applications because it provides R-6.5 per inch, acts as its own vapor retarder, and won’t absorb Gulf humidity. Open-cell has specific applications - primarily roof decks with managed ventilation - but for garage ceilings, rim joists, and attic-side work in Climate Zone 2A, closed-cell is the technically correct choice. Your written scope will specify the product and manufacturer before work starts.
Most residential spray foam jobs in Schertz are completed in one day; larger attic deck or full-envelope work may take two. Occupants must vacate during application and for 24 hours after while the foam off-gasses and cures - this is non-negotiable for safety. We coordinate timing with Schertz customers to minimize disruption, and you’ll receive a Documented Photo Record and written completion summary when the crew leaves. Call (830) 529-7780 to schedule around your availability.
Ready to see what your Schertz home is actually losing? Call (830) 529-7780. A live person answers 24/7, and we’ll deliver a written price before any work starts - guaranteed under The Haven Standard.
Written by Wes Okafor, Owner at Topside Attic Insulation Boerne, serving Schertz and the San Antonio metro since 2016.