Fast, Reliable Spray Foam Insulation Across Bulverde
Spray foam insulation in Bulverde typically runs $2.80-$5.40 per board foot depending on open-cell or closed-cell product, and most attic conversions in the 8- to 15-year-old homes along TX-46 and Bulverde Road are completed in two days. We’re the crew that shows up with the rig, the material, and the plan to finish in one trip - no running back to Dallas-Fort Worth for forgotten hoses or the wrong density.
Bulverde’s different. The hilltop exposure, the acreage lots with detached shops, the master-planned communities built fast during the 2010s boom - we’ve worked in enough of them to know the patterns. Call (830) 243-6352 for a written price before anyone starts.
Why Topside Attic Insulation New Braunfels Is Bulverde’s Preferred Spray Foam Insulation Company
We’ve sealed and insulated more than 9,000 homes since 2016, and a growing share of them sit right here in Bulverde. The reviews we get from Bulverde homeowners tend to mention the same thing: we showed up when we said we would, we named the price before we started, and we left behind photos and blower-door numbers they could actually use.
Dispatch and scheduling run through our Dallas-Fort Worth office, but our crews serve Bulverde locally. That means we’re not guessing about the 150°F attic temps on your hilltop roof or the settled blown fiberglass the builder installed to minimum code. We’ve seen it. We’ve measured it. We’ve fixed it.
Response time to Bulverde is typically same-day or next-day for estimates, and we answer calls 24/7 with a live person - no voicemail loops, no callback windows measured in business days. Under Haven Standard: Arrive on schedule, you get a named technician and a text when they are on the way.
Our Spray Foam Insulation Services in Bulverde
Open-Cell Spray Foam
Open-cell spray foam - the half-pound density product that expands to fill irregular cavities - is what we reach for most often in Bulverde’s vented-to-unvented attic conversions. The 2010s-era homes along Bulverde Road and TX-46 were built with vented attics and blown fiberglass to R-38 minimum. We remove that settled material, air-seal the ceiling plane, and spray open-cell foam directly to the roof deck. The result is an unvented assembly that drops attic temperatures dramatically and keeps conditioned air where it belongs. A typical open-cell roof deck job in Bulverde runs $3,200-$5,800 for a 2,400-square-foot home.
Closed-Cell Spray Foam
Closed-cell spray foam - the two-pound density product that adds structural rigidity and vapor barrier properties - makes sense in Bulverde’s detached workshops, metal buildings, and any space where moisture control is critical. The Hill Country’s hard swings from 150°F attic peaks to February freezes below 10°F mean vapor drive can be severe. Closed-cell’s R-6.5 per inch and impermeability to bulk water make it the right choice for rim joists in crawl spaces and for sealing any envelope where we need maximum thermal resistance in minimum thickness.
Rim Joist Spray Foam
Rim joist spray foam is where we find the most overlooked air leaks in Bulverde’s slab-on-grade construction. The 2010s builders here ran ducts and plumbing through rim joist areas with minimal sealing, and the February 2021 freeze proved how fast cold air pushes through those gaps. We spray closed-cell foam to seal and insulate the rim joist in one pass - typically a $1,400-$2,600 job in a Bulverde home, depending on linear footage and access. It’s the single most cost-effective air-sealing upgrade we do in these houses.
Garage Ceiling Spray Foam
Garage ceiling spray foam matters in Bulverde because so many homes here have conditioned rooms above or adjacent to unconditioned garage space. The minimum-code batt insulation the builder stuffed up there has likely sagged, torn, or been displaced by ductwork. We spray open-cell foam to the garage ceiling to create a continuous thermal and air barrier - critical when your home office or bedroom sits above that 120°F garage in July. Typical range: $1,800-$3,400.
Spray Foam Roof Deck
Spray foam roof deck work is our bread and butter in Bulverde in ways it simply isn’t in older, flatter San Antonio neighborhoods. The combination of hilltop exposure, dark roofing, and insufficient ridge venting means vented attics here become solar ovens. Converting to an unvented assembly by spraying foam directly to the roof deck - creating a conditioned attic space - solves the problem at the source. We were called out to a 12-year-old home off Bulverde Road where the owner’s summer electric bills had spiked and a February cold snap had frozen a bathroom supply line. In the vented attic we found blown fiberglass settled to about half its original depth and a ridge vent that couldn’t keep up with the hilltop heat load. We air-sealed the ceiling plane, removed the old insulation, and sprayed Icynene open-cell foam on the roof deck to create an unvented assembly - attic temps dropped and the house held heat through the next freeze.
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.
- 3
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 Bulverde
We source spray foam materials from Demilec, Johns Manville, and Owens Corning - no proprietary product lock-in, so we match the material to the job rather than forcing the job to fit what we stock. For Bulverde’s vented-to-unvented attic conversions, we typically specify Demilec’s open-cell products for roof deck work and Johns Manville closed-cell for rim joist and metal building applications. Our rigs carry both on board, which means no delay waiting for a special order to arrive from San Antonio.
Common Spray Foam Insulation Problems We See in Bulverde Homes
- Spraying over settled, uneven blown fiberglass without removing it. We’ve been called in after other contractors took this shortcut in a home near Canyon Springs. The trapped voids led to delamination within two years. We stripped it all, started clean, and did it right.
- Hilltop exposure cooking improperly applied foam. The 150°F+ attic temps on Bulverde’s exposed hilltops will shrink and off-gas foam that wasn’t mixed or applied to spec. We see this most often on south-facing roof decks with minimal tree cover.
- Rim joists and attic penetrations left unsealed in minimum-code 2010s homes. The builders here sealed to pass inspection, not to perform. When February 2021 hit, cold air pushed straight into wall cavities and froze pipes that should have been protected.
- Insufficient ridge venting creating pressure problems in unvented conversions. Some crews skip the ventilation calculation when converting to unvented. We don’t - the assembly has to work as a system, or the moisture will find somewhere to go.
Pricing for Spray Foam Insulation in Bulverde, TX
Here’s what spray foam insulation costs in Bulverde’s market right now:
| Service | Typical Range |
|---|---|
| Open-cell spray foam, roof deck (per bd. ft.) | $2.80-$3.60 |
| Closed-cell spray foam, rim joist/walls (per bd. ft.) | $4.20-$5.40 |
| Full vented-to-unvented attic conversion, 2,400 sq ft home | $3,200-$5,800 |
| Rim joist sealing, typical slab-on-grade | $1,400-$2,600 |
| Garage ceiling spray foam | $1,800-$3,400 |
What moves the number: roof pitch and accessibility, existing insulation removal requirements, whether we need to build baffles at the soffit, and the linear footage of rim joist. Every job gets a written price before any work starts - Haven Standard Clause 1 - and we offer a Free Second Opinion on any written estimate you’ve already received. Call (830) 243-6352 for an exact quote on your home.
We Also Serve Cities Near Bulverde
Our crews work throughout the San Antonio metro corridor. If you’re in Bulverde or nearby - Canyon Lake, Schertz, Universal City, or Cibolo - we run the same process: written price first, documented record when we leave, and before-and-after blower-door numbers on every applicable job. Our Spray Foam Insulation team covers the full envelope service line across all these communities.
Serving Bulverde, TX - Our Local Coverage Area
We’re based in the Bulverde 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 Bulverde
Yes, and in Bulverde specifically, 2015 construction is exactly the profile we retrofit most often. These homes were built to minimum Texas energy code with blown fiberglass to R-38 in vented attics, and that insulation has likely settled unevenly while the ridge vent struggles against hilltop heat. The February 2021 freeze exposed how poorly these “new” homes perform under real Hill Country stress. Call (830) 243-6352 for a free estimate - we’ll show you the blower-door numbers.
Yes, always. Spraying over settled, uneven blown fiberglass traps voids and leads to delamination and poor coverage - we’ve been called to fix this exact mistake in Bulverde homes. We remove the old material, air-seal the ceiling plane properly, then spray. The written scope we deliver before work starts specifies this step; there is no option to skip it.
Bulverde’s housing stock is almost entirely 8- to 15-year-old master-planned homes with vented attics on hilltop lots with intense solar exposure, while San Antonio’s older neighborhoods have flatter terrain, more mature shade, and a wider mix of construction eras. The 150°F+ attic temps and the post-Uri upgrade wave have created a retrofit pattern here that barely exists in older parts of the metro. It’s geography, housing age, and climate together.
Open-cell spray foam on the roof deck to create an unvented assembly - that’s our standard specification for Bulverde’s vented attic conversions. The half-pound density fills irregular rafter bays completely, and the permeability allows any incidental moisture to dry to the interior. We source this from Demilec and Johns Manville depending on the specific roof assembly. Closed-cell is reserved for rim joists, metal buildings, and spaces where vapor impermeability is required.
Spray foam creates an air-impermeable thermal barrier that stops the stack effect from pulling sub-freezing air into wall cavities and around pipes. In Bulverde’s minimum-code 2010s homes, rim joists and top plates were never properly sealed - that’s why pipes froze in “new” houses. We air-seal first, then insulate, so the envelope holds conditioned air when the next hard freeze hits. Call (830) 243-6352 to schedule a blower-door test and see exactly where your home is losing heat.
Written by Wes Okafor, Owner at Topside Attic Insulation New Braunfels, serving Bulverde since 2016 under The Haven Standard.