Fast, Reliable Spray Foam Insulation Across Schertz
Spray foam insulation in Schertz typically runs $1.80-$3.20 per board foot for open-cell and $3.50-$5.50 for closed-cell, with most garage ceiling and rim joist jobs completed in a single day. Our crews dispatch from the San Antonio office and usually reach Schertz homes within 45 minutes, including the subdivisions along FM 3009 and Wiederstein Road. If you’re seeing summer electric bills climb past $300 or a bonus room that won’t hold temperature, the builder-grade insulation in your tract home is likely the culprit. Call (830) 420-0953 for a free estimate with a written price before any work starts.
Why Topside Attic Insulation Converse Is Schertz’s Preferred Spray Foam Insulation Company
We’ve sealed and insulated more than 9,000 homes since 2016, and a significant share of them sit in Schertz’s post-2000 subdivisions - Buffalo Crossing, Red Hawk Hill, the corridors off FM 3009. These aren’t aging houses with settled cellulose. They’re ten-year-old DR Horton and Lennar builds where the original R-30 batts were never designed for 150°F attic summers.
Our Schertz customers leave three-star reviews that read like five-star reviews - they mention the blower-door number we published, the photo record we delivered, the written scope they signed before anyone started. That’s the Haven Standard. Under Haven Standard: Arrive on schedule, you get a named technician and a text when they are on the way.
Calls route to a live person, 24/7. No voicemail loops. No callback windows measured in business days. For Schertz, that matters when your PCS date from JBSA-Randolph is fixed and the closing is in three weeks.
Our Spray Foam Insulation Services in Schertz
Open-Cell Spray Foam
Open-cell spray foam in Schertz attics runs $1.80-$2.80 per board foot and works best for roof deck applications where you need vapor permeability and the assembly can dry to the interior. In Schertz’s Climate Zone 2, we specify open-cell at 5.5-6.5 inches on roof decks to hit R-38 with a Class III vapor retarder on the interior. The material we use is sourced from Owens Corning and Demilec - no proprietary lock-in, so if you want a specific formulation, we can accommodate.
Closed-Cell Spray Foam
Closed-cell is our primary specification for Schertz garage ceilings, rim joists, and any application where the foam must act as both insulation and air barrier in a thin profile. At $3.50-$5.50 per board foot, it delivers R-6.5 per inch and structural rigidity that open-cell cannot. On Wiederstein Road our crew foamed the garage ceiling of a 2007 DR Horton two-story after the builder-grade kraft-faced batts had sagged away from the decking, letting the attic soak the garage and bonus room. We removed the old batts, closed-cell foamed the rim joist and garage ceiling, and the homeowner reported the bonus room finally held temperature and the garage stopped baking in August. Closed-cell also handles the occasional hard freeze - Schertz learned that lesson in February 2021.
Rim Joist Spray Foam
The rim joist - the band board where your foundation meets your first floor - is the most under-insulated plane in Schertz’s slab-on-grade tract homes. Builder crews typically stuffed fiberglass batts that fell out within five years or applied one thin pass of foam that never reached full cavity depth. Our rim joist treatment runs $800-$1,400 for a typical Schertz single-story and $1,200-$2,000 for a two-story, with closed-cell foam applied to full depth after mechanical brushing and priming of the OSB or sill plate. We document the cavity depth and coverage with photos before we close the wall.
Garage Ceiling Spray Foam
Garage ceiling spray foam is our most requested Schertz upgrade, and for specific reasons tied to this city’s housing stock. The typical Schertz two-story has a bonus room or bedroom above the garage, separated by a floor assembly that the builder insulated with R-19 kraft-faced batts. Within eight to ten years, gravity and attic heat sag those batts off the subfloor, creating a direct thermal bridge. Our garage ceiling treatment - $1,400-$2,600 for a two-car, $2,200-$3,800 for a three-car - removes the failed batts, air-seals all penetrations and top plates, then applies closed-cell foam to the garage ceiling or open-cell to the roof deck above, depending on whether the attic is conditioned. Every job gets before-and-after blower-door numbers so you can verify the air-sealing result.
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 Schertz
We source spray foam materials from Owens Corning, Johns Manville, Knauf, and Rockwool, plus Icynene, Demilec, and GreenFiber for specific applications. For Schertz customers, this means no proprietary product lock-in - if your home energy audit specifies a particular formulation or if you’re matching existing foam for a repair, we can pull the exact material rather than substituting with whatever’s in the truck. Our San Antonio warehouse stocks closed-cell and open-cell kits for same-day dispatch to Schertz, so turnaround on quoted work rarely stretches beyond a week.
Common Spray Foam Insulation Problems We See in Schertz Homes
- Builder-grade batt insulation sags off garage ceilings within a decade. In Schertz subdivisions like those along Wiederstein Road, the kraft-faced batts installed in 2007-2015 have dropped onto the garage floor or hang in strips, leaving the top plates and recessed can penetrations completely unsealed. The attic above hits 150°F by mid-June, and that heat radiates straight into the bonus room.
- Closed-cell spray foam blisters or pulls loose from OSB decking. We see this in fast-tracked subdivisions along FM 3009 where the original installer skipped surface prep - no brushing, no priming, foam shot directly onto dusty sheathing. The foam cures, but the bond fails within two seasons of thermal cycling.
- Rim joists are foamed in one thin pass without reaching full cavity depth. The band board looks insulated from the basement or crawl space, but a thermal camera reveals the February 2021-style hard freeze still finding air paths. The house loses heat at the foundation perimeter, and the first-floor exterior walls run cold.
- Attic air sealing was skipped entirely before insulation was added. Schertz’s volume builders met bare IECC code minimums - R-30 attic insulation, no top-plate sealing, no can-light enclosures. Blowing additional cellulose or fiberglass over that mess just buries the leaks; it doesn’t stop them. Our protocol is sealed first, then insulated - in that order.
Pricing for Spray Foam Insulation in Schertz, TX
Most spray foam jobs in Schertz fall into these ranges:
| Open-cell attic/roof deck | $1.80-$2.80 per board foot |
| Closed-cell garage ceiling (2-car) | $1,400-$2,600 total |
| Closed-cell garage ceiling (3-car) | $2,200-$3,800 total |
| Rim joist (single-story) | $800-$1,400 total |
| Rim joist (two-story) | $1,200-$2,000 total |
| Whole attic (open-cell, typical 1,800 sq ft) | $3,200-$5,400 total |
What moves you within these ranges: cavity depth required, surface prep needed (removing failed batts adds labor), accessibility (steep roof pitches or tight crawl spaces), and whether we’re treating a single plane or the full envelope. Every quote is a flat price with a written scope and written warranty before anyone lifts a tool - Haven Standard Clause 1. We also offer a Free Second Opinion on any written estimate from another contractor. Call (830) 420-0953 for an exact quote - estimates are free.
We Also Serve Cities Near Schertz
Our crews work daily in Schertz and the surrounding corridor: Universal City to the south, Cibolo to the east, Converse to the southwest, and New Braunfels to the northeast. Dispatch and scheduling are coordinated from our San Antonio office, but the trucks that roll to Schertz carry Schertz-specific material specs and the blower-door reference data we’ve built from hundreds of local jobs. For Spray Foam Insulation across this entire service area, the same written-price protocol and documented photo record apply.
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
Your 2010 Schertz home was insulated to the bare IECC code minimum of that year - typically R-30 in the attic, kraft-faced batts in the garage ceiling, and no systematic air sealing. The builder met code; they did not optimize for performance. After a decade of 150°F attic summers, those batts have sagged, compressed, or fallen away entirely, and the air leaks at top plates and can lights have never been sealed. Spray foam is usually the first corrective work these homes have ever had. Call (830) 420-0953 for a free estimate - we’ll show you the blower-door number that proves it.
Yes - it’s often the highest-ROI upgrade in a Schertz two-story with a bonus room over the garage. The builder’s R-19 batts fail predictably in that location because gravity and heat work against them. Closed-cell spray foam applied to the garage ceiling or open-cell applied to the roof deck above creates a continuous air barrier and thermal boundary, stopping the heat transfer that makes the bonus room uninhabitable in July. Most of these jobs run $1,400-$3,800 depending on garage size and whether we also treat the rim joist. Call (830) 420-0953 for an exact quote - estimates are free.
Yes, and we’ve seen it repeatedly in Schertz’s military rotation cycle. A home with documented spray foam and air-sealing work - especially with before-and-after blower-door numbers - differentiates from identical builder-grade inventory in Buffalo Crossing or Red Hawk Hill. Landlords report faster rentals and fewer summer HVAC complaints; sellers use the documentation in disclosures. The 365-Day Done Right Promise transfers to the new owner, which is a concrete selling point rather than a vague claim. Call (830) 420-0953 to schedule work that completes before your PCS date - estimates are free.
The February 2021 Winter Storm Uri exposed how poorly Schertz’s minimally insulated homes retain heat, and that event permanently shifted our recommendations. For rim joists and garage ceilings - the planes most vulnerable to freeze damage from plumbing lines - we now default to closed-cell spray foam for its higher R-value per inch and structural rigidity. For roof decks in vented attics, open-cell remains appropriate. The specific assembly and your home’s existing conditions determine the final specification, which we detail in the written scope before work starts. Call (830) 420-0953 for an assessment - estimates are free.
We use Owens Corning, Johns Manville, Knauf, and Rockwool for conventional insulation, and Icynene, Demilec, and GreenFiber for spray foam applications. No proprietary lock-in means we match the material to your home’s specific assembly and any existing foam that needs repair or extension. Every batch is documented with manufacturer data sheets, and every job gets a Documented Photo Record showing cavity depth, coverage, and finished condition. Call (830) 420-0953 for specifics on your project - estimates are free.
Ready to fix the builder-grade insulation that’s been failing since the day you moved in? Call (830) 420-0953 for a free estimate with a written price before any work starts. Our Spray Foam Insulation team serves Schertz daily, and a live person will answer your call.
Written by Wes Okafor, Owner at Topside Attic Insulation Converse, serving Schertz since 2016.