Fast, Reliable Blown-In Insulation Across New Braunfels
Blown-in insulation in New Braunfels typically costs $1.80 to $3.40 per square foot of attic floor, with most complete attic jobs running $2,400-$4,800 and top-up work $900-$1,800. We dispatch crews from our San Antonio office and are usually on-site in New Braunfels within 24 hours of your call. Call (830) 243-6352 for a written price before any work starts.
We’ve worked the attic hatches from Gruene to the FM 306 corridor, and the pattern is consistent: New Braunfels’s decade of explosive growth produced thousands of homes with insulation that looks right until you move past the hatch. Our Blown-In Insulation team treats air sealing as a hard prerequisite, not an upsell, and publishes before-and-after blower-door numbers so you can verify what you paid for.
Why Topside Attic Insulation New Braunfels Is New Braunfels’s Preferred Blown-In Insulation Company
We’ve sealed and insulated more than 9,000 homes since 2016, and a significant share of those are in the New Braunfels growth corridor - Veramendi, Hunter’s Crossing, Elm Creek, and the older ranch pockets near Gruene. New Braunfels homeowners leave reviews that mention the written scope, the blower-door printout, and the photo record. They read three-star reviews as carefully as five-star ones, so we leave the documentation where they can verify it.
Response time to New Braunfels is typically same-day or next-day. Calls are answered by a live person, 24/7, and crews carry the full material range - Owens Corning, Johns Manville, Knauf, and GreenFiber - so we’re not ordering stock after we see your attic. Every job opens with a written price and closes with a Documented Photo Record; on applicable jobs, you get the blower-door test - a pressurization reading that shows, in one number, how much air your building envelope was losing before and after.
Under Haven Standard Clause 1: flat price, written scope, written warranty before anyone lifts a tool. The 365-Day Done Right Promise applies to all completed work in New Braunfels.
Our Blown-In Insulation Services in New Braunfels
Blown-In Fiberglass
We use Owens Corning and Johns Manville blown fiberglass for attic top-ups and full replacements in New Braunfels, installed to uniform depth with depth markers visible across the attic floor. In the post-2010 subdivisions along FM 306 and FM 1101, we routinely find builder-installed blown fiberglass that reads R-30 at the hatch but thins to under 6 inches over can lights and exterior walls - a speed-cut from crews racing to keep up with building pace. We strip that uneven blanket, seal the top plates and penetrations first, then blow to a consistent R-49 with verified depth at multiple measurement points.
Blown-In Cellulose
GreenFiber cellulose is our choice for homeowners who want a treated-paper product with higher density and better resistance to convective heat loss. In New Braunfels’s river-corridor homes near the Guadalupe and Comal, where ambient humidity runs higher, cellulose’s boric-acid treatment resists mold and pest pressure better than unconditioned fiberglass. We specify cellulose when the attic has a history of moisture management issues or when the homeowner is pairing insulation with air sealing for maximum blower-door improvement.
Dense-Pack Wall Insulation
New Braunfels’s 1970s-1990s ranch homes and historic structures near Gruene often have empty stud cavities or failed batt insulation that settled or was never fully installed. Dense-pack cellulose, blown at 3.5 pounds per cubic foot, fills those cavities without removing drywall - accessed through exterior siding or interior plaster repair points. We dense-packed a Veramendi home on the FM 306 side where the east exterior wall was reading 8°F colder than interior drywall in January; after dense-pack and attic sealing, the blower door dropped from 3,800 CFM50 to 2,100.
Blown-In Top-Up
The most common call we get in New Braunfels. Builders installed code-minimum R-30 in attics that see 100°F+ Hill Country summers and hard freezes like February 2021. A blown-in top-up brings existing attic insulation to R-38 or R-49 without full removal, provided the existing material is dry and uncontaminated. We verify with moisture meters and photo documentation before blowing; if we find rodent contamination or vapor damage, we quote removal and replacement with a written price before any work starts.
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 New Braunfels
We stock Owens Corning, Johns Manville, and GreenFiber materials on our New Braunfels-area trucks - no proprietary lock-in, no special-order delays. Knauf and CertainTeed products are available for specific applications on request. Because we carry multiple brands, we specify by performance characteristic rather than by contract obligation: Owens Corning for thermal stability in high-temperature attics, GreenFiber cellulose for dense-pack wall cavities and humidity-buffering in river-corridor homes. Every bag is documented in your job record with lot numbers and installed depth readings.
Common Blown-In Insulation Problems We See in New Braunfels Homes
- Builder-speed thinning in fast-built subdivisions. Blown fiberglass installed at code-minimum R-30 in Veramendi, Hunter’s Crossing, and Elm Creek homes reads correct at the attic hatch but drops well below label over exterior walls and recessed can lights - exactly the thermal weak points that drive August electric bills past $400.
- River-corridor humidity damage. Near the Guadalupe and Comal River corridors, poorly vapor-managed blown fiberglass in attic assemblies holds moisture, compresses, and loses R-value from the top down. We find this most often in homes without adequate soffit ventilation or with bath fans vented into attic space rather than through the roof.
- Freeze-cycle plumbing penetrations. The same funnel geography that brought Winter Storm Uri leaves blown insulation around Comal County plumbing stacks and pipe chases vulnerable to ice-damming and gap formation. We add freeze-protection insulation and seal pipe chases as part of our standard air-sealing protocol.
- Dual-season thermal stress opening air paths. 100°F+ Hill Country summers and hard Arctic outbreaks expand and contract the insulation envelope, creating bypass paths that let both heat and cold migrate around the blown blanket. Air sealing before insulation is the only fix that lasts.
Pricing for Blown-In Insulation in New Braunfels, TX
A typical blown-in fiberglass top-up in a New Braunfels tract home runs $900-$1,800, depending on attic square footage and target R-value. Full attic replacement with air sealing runs $2,400-$4,800. Dense-pack wall insulation for a 1,500-square-foot ranch home runs $1,200-$2,400. These ranges reflect 2024-2025 Comal County material and labor costs.
What moves the number: attic accessibility (steep roof pitch or limited hatch size adds labor), existing insulation condition (removal and disposal adds $0.75-$1.25 per square foot), and the extent of air sealing required before blowing. We provide a written price before any work starts - Haven Standard Clause 1 - and a Free Second Opinion on any competing written estimate. Call (830) 243-6352 for an exact quote; estimates are free.
We Also Serve Cities Near New Braunfels
Our crews work the full I-35 corridor and Hill Country periphery: New Braunfels, Seguin, Cibolo, Schertz, and Canyon Lake. Dispatch and scheduling are coordinated from our San Antonio office; crews serve each city locally with same-day or next-day response.
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 - Blown-In Insulation in New Braunfels
Because the blown fiberglass was likely installed at correct depth only at the measurement point near the hatch, then thinned dramatically over exterior walls and can lights where the blower hose couldn’t reach easily during fast construction. We verify with depth probes at minimum 10 points across the attic floor; most Veramendi homes we test show 10-12 inches at the hatch and 4-6 inches over the east and west walls. Call (830) 243-6352 and we’ll measure yours - estimates are free.
Yes. Higher ambient humidity in river-corridor homes increases vapor drive into attic assemblies, which can compress fiberglass and support mold in poorly ventilated spaces. We specify GreenFiber cellulose or upgrade vapor management with proper soffit and ridge ventilation before blowing. In extreme cases, we recommend crawl space encapsulation or attic dehumidification as part of the scope. Every recommendation is in writing before work starts.
Uri exposed every gap in the thermal envelope. Homes with thin or settled blown insulation around plumbing penetrations saw frozen pipes; homes with proper air sealing and R-49+ attic insulation fared significantly better. The freeze also compressed wet fiberglass in homes with pre-existing humidity issues, permanently reducing R-value. We now inspect all Comal County attics for Uri-related compression and include freeze-protection insulation around pipe chases as standard.
Blown fiberglass for most attic top-ups - it doesn’t absorb moisture, maintains loft, and is cost-effective for the R-38 to R-49 jump most New Braunfels homes need. We specify GreenFiber cellulose when the attic has humidity history, when we’re dense-packing walls, or when the homeowner wants the higher density and sound-dampening cellulose provides. We stock both and specify by condition, not by margin.
Older ranch homes often have empty wall cavities, failed batt insulation, and minimal attic air sealing - the thermal equivalent of a screen door. New subdivisions have the opposite problem: insulation present but poorly distributed and never sealed. Ranch homes near Gruene typically need dense-pack wall work plus full attic air sealing before any blown top-up; tract homes need uniform depth correction and penetration sealing. We assess with a blower-door test and photo documentation, then write a scope specific to what we found.
Written by Wes Okafor, Owner at Topside Attic Insulation New Braunfels, serving New Braunfels since 2016 under The Haven Standard.