Fast, Reliable Attic Insulation Across New Braunfels
Most attic insulation jobs in New Braunfels run $1,800-$4,500 depending on square footage and whether air sealing is needed first. We’re typically on-site in New Braunfels within 24-48 hours of your call, and same-day service is often available for urgent heat-loss situations. Our crews serve New Braunfels directly from our San Antonio dispatch office, so we know the I-35 corridor subdivisions, the river-valley humidity patterns, and the specific failure modes that show up in this city’s fast-built production housing. Call (830) 420-0953 for a written price before any work starts.
We’ve been in enough New Braunfels attics to know the pattern. A homeowner buys a 2018-built house in Veramendi or Creekside, assumes the insulation is fine because the home is “new,” and then watches their AC run twelve hours straight in July. The problem isn’t the AC. It’s the attic.
Why Topside Attic Insulation Converse Is New Braunfels’s Preferred Attic Insulation Company
Our New Braunfels customers leave reviews that mention the same thing: we show them photos of what we found, we give them blower-door numbers they can compare, and we never start work without a written price they already approved. We don’t do “estimates that change once we’re up there.” Haven Standard Clause 1 means flat price, written scope, written warranty - before anyone lifts a tool.
Response time to New Braunfels is 24-48 hours standard, with same-day availability when attic heat loss has become an emergency. We know the local building patterns: the master-planned communities off FM 306, the infill near downtown Gruene, the slab-on-grade production builds along the I-35 corridor where caliche soil and zero shade trees turn attics into ovens. That local knowledge means we don’t waste your time diagnosing problems we’ve already seen fifty times.
Every job closes with a Documented Photo Record and, on applicable work, before-and-after blower-door readings. The 365-Day Done Right Promise applies to all completed work in New Braunfels - if it’s not done right, we make it right.
Our Attic Insulation Services in New Braunfels

Blown-In Attic Insulation
We install blown fiberglass and blown cellulose in New Braunfels attics, sourcing materials from Owens Corning, Johns Manville, and GreenFiber. Blown-in works best for topping existing insulation or filling irregular joist bays in the truss-framed attics common to Creekside and Veramendi production homes. We blow to a measured depth, not a guess, and we mark it with depth rulers so you can verify.

Attic Batt Insulation
Batt insulation - pre-cut fiberglass or mineral wool batts - fits standard joist spacing in knee walls, attic hatches, and vertical end walls where blown material won’t stay put. In New Braunfels, we use batt work selectively because river-valley humidity from the Comal and Guadalupe can trap moisture in poorly vapor-managed batts. When we do install batts, we specify the vapor retarder placement for this climate, not a generic national recommendation.

Attic Insulation Top-Up
This is our most common call in New Braunfels. Production builders blew fiberglass to code minimum - usually R-30 - and within five years it’s settled to R-19 or less, especially in the field center where nobody walks. We measure existing depth, calculate what’s needed to reach R-38 or R-49, and top up with matched material. In Veramendi, a homeowner called us after their five-year-old production home wouldn’t hold temperature above 74°F on summer afternoons. We went up in the unconditioned attic and found the blown fiberglass had settled to about R-19 in the middle of the field and was missing entirely at the eaves - classic code-minimum buildout. We topped up to R-38 with Owens Corning blown insulation, installed baffles for proper ventilation, and they told us the AC stopped running nonstop within a day.

Attic Insulation Replacement
When existing insulation is contaminated, water-damaged, or installed without proper air sealing, we remove and replace. This is increasingly common in New Braunfels slab-on-grade homes where vapor management failed and batt insulation grew heavy with humidity. We remove the compromised material, seal the attic floor properly - top plates, can lights, penetrations - then install new insulation to spec. No blowing over unsealed leaks. That’s not our process.

Attic Baffles & Ventilation Prep
New Braunfels attics on those open, treeless caliche lots need active ventilation more than most. We install baffles - also called rafter vents or vent chutes - at every eave to keep soffit intake air flowing over the insulation rather than pushing it back. Without baffles, your top-up investment settles into the eave and blocks airflow, creating the exact hot spots you’re trying to eliminate. We check soffit venting as part of every attic job in New Braunfels.

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.
- 4
You approve before work beginsNothing starts until you say go.
Before
AfterTrusted Brands We Service in New Braunfels
We source insulation materials from Owens Corning, Johns Manville, Knauf, and GreenFiber - no proprietary lock-in, no house-brand upsell. For New Braunfels homeowners, this means we match the right material to the actual condition in your attic rather than selling whatever we have in the warehouse. Owens Corning blown fiberglass is our standard for top-ups in production-built attics; GreenFiber cellulose works well for homeowners prioritizing recycled content and sound dampening near the I-35 corridor. We stock locally and coordinate delivery from San Antonio, so material delays don’t hold up your job.
Common Attic Insulation Problems We See in New Braunfels Homes

- Settled builder-grade blown fiberglass in 2010s-2020s tract homes. Code-minimum R-30 blown fiberglass in Veramendi, Creekside, and Canyon Lake corridor subdivisions settles to below R-30 within a few years, leaving the attic field exposed to 150°F+ summer heat in those open, treeless developments along the I-35 corridor.
- Humidity-trapped batts in river-valley slab homes. The Comal and Guadalupe rivers raise indoor humidity enough that improperly vapor-managed batt insulation in newer slab-on-grade homes traps moisture, loses effective R-value, and can grow mold within tight, low-clearance attic spaces.
- Uninsulated eaves and knee walls in fast-built production homes. Volume builders often skip or under-insulate these transition areas, creating cold and hot spots that showed up dramatically across New Braunfels during Winter Storm Uri in February 2021.
- Missing air sealing beneath existing insulation. Insulation doesn’t stop air movement. We’ve pulled back blown fiberglass in five-year-old New Braunfels homes and found unsealed top plates, electrical penetrations, and can-light housings leaking conditioned air straight into the attic.
Pricing for Attic Insulation in New Braunfels, TX
A typical attic insulation top-up in a 2,000-square-foot New Braunfels home runs $1,800-$2,800. Full removal and replacement with air sealing starts around $3,500 and can reach $4,500-$6,500 for larger homes or spray-foam encapsulation. Attic baffles and ventilation prep add $400-$800 depending on linear footage of eave.
What moves the number: existing insulation condition, attic accessibility (some production trusses have 24-inch clearance or less), whether air sealing is needed first, and material choice. We don’t give ballpark numbers that change later. Haven Standard Clause 1 means you get a written price, written scope, and written warranty before anyone starts. Free Second Opinion on any written estimate from another contractor - bring us their scope and we’ll read it with you. Call (830) 420-0953.
We Also Serve Cities Near New Braunfels

Our Attic Insulation crews work throughout the corridor - Seguin to the east, Cibolo and Schertz to the north, Universal City inside Loop 1604. Same written-price standard, same blower-door documentation, same 365-Day Done Right Promise. Scheduling is coordinated from our San Antonio office with local crews dispatched to each area.
Serving New Braunfels, TX - Our Local Coverage Area
We’re based in the New Braunfels 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 - Attic Insulation in New Braunfels

Because it was likely insulated to the bare-minimum Texas Energy Code during the construction boom, and that blown fiberglass has settled below its labeled R-value within five years. In New Braunfels, we’ve measured R-19 or less in the field center of attics labeled R-30 at build. Call (830) 420-0953 for a free inspection - estimates are free.
River-valley humidity raises the moisture load in slab-on-grade homes enough that improperly specified batt insulation can trap water vapor, compress, and lose R-value. We see this in newer production homes near the river corridors where vapor retarders were installed on the wrong side or omitted entirely. Proper vapor management - matching the retarder placement to this climate - prevents the problem. We check this on every New Braunfels attic inspection.
Yes. The historic German-settlement core around downtown and Gruene includes 19th- and early 20th-century limestone and frame structures with essentially no original wall insulation and often minimal attic insulation - these need full envelope assessment. The 2010s-2020s tract homes in Veramendi and Creekside typically have some insulation, but it’s code-minimum, poorly sealed, and settling fast. Different eras, different problems, different solutions.
A disproportionate number of calls came from owners of 5-10-year-old production homes on the I-35 corridor who discovered their builder-grade blown fiberglass had settled or was undersized from day one - insulation that failed both freeze and heat tests. The pattern was so consistent that it now drives strong local demand for spray-foam attic encapsulation as both freeze-protection and summer-cooling upgrade in homes people assumed were already code-compliant. Call (830) 420-0953 if you suspect your home was in that batch.
We recommend R-38 to R-49 in the attic floor for New Braunfels’s climate zone, with proper air sealing completed first and baffles installed at every eave. On those open, treeless caliche lots where attic temps exceed 150°F, depth matters more than it does in shaded Hill Country properties. We measure with a ruler, not a guess, and we photograph the depth for your record. Free estimate - call (830) 420-0953.
Ready to see what’s actually in your attic? Call (830) 420-0953 for a free inspection and written price. A live person answers 24/7.
Written by Wes Okafor, Owner at Topside Attic Insulation Converse, serving New Braunfels since 2016.