Owens Corning Attic Air Sealing: The New Braunfels Owner’s Guide
We stock and install Owens Corning-compatible attic air sealing systems in New Braunfels, with most completed jobs running between $1,800 and $3,400 depending on attic square footage and bypass complexity. Same-day service is available when you call before noon. Homeowners usually figure out something’s wrong when their upstairs rooms won’t stay cool in July despite the AC running nonstop, or when they spot fiberglass batting pulled dark with dust trails near recessed can lights - signs that conditioned air is escaping through gaps the original builder never sealed.
Which Owens Corning Models This Applies To
Owens Corning doesn’t sell attic air sealing as a standalone branded system the way they sell PINK Fiberglas or FOAMULAR rigid board. What we’re addressing here is the air-sealing work that should precede any Owens Corning insulation install, or the remediation when prior Owens Corning insulation was blown over an unsealed attic floor. If your home was insulated by an Owens Corning-certified contractor between 2010 and 2020, check for their job sticker on the attic access hatch or on the kraft-facing of batts near the scuttle hole. The critical compatibility issue in New Braunfels homes built 1985-2005: many of these houses have open-web trusses with 2×4 top plates that create a thermal bypass gap at every exterior wall. Standard Owens Corning Atticat blown-in coverage charts assume a sealed envelope. We verify actual R-value achieved, not just bags blown. For aftermarket sealing, we use Owens Corning-certified FOAMULAR rigid board to block soffit chutes and top-plate gaps where the original installer skipped it, paired with acrylic latex caulk or one-component foam for penetrations. OEM-spec FOAMULAR comes in 1/2-inch, 3/4-inch, and 1-inch thicknesses; the 3/4-inch is what we cut for most New Braunfels truss bays.
Signs Your Owens Corning Attic Air Sealing Is Failing
- Uneven room temperatures upstairs. The master bedroom runs five degrees warmer than the hallway because conditioned air is leaking into the attic through unsealed top plates, and the thermostat downstairs keeps calling for cooling that never arrives where you sleep.
- Dust streaks on fiberglass batts or blown-in coverage. Dark gray or black trails in the insulation are filtration marks - attic air being pulled through gaps by the stack effect, carrying dust that deposits on the fibers like a coffee filter.
- Ice damming or moisture staining on ceiling drywall in winter. Warm, humid indoor air hits cold roof sheathing at unsealed penetrations, condenses, and freezes at the eaves; when it thaws, the water stains your ceiling. In New Braunfels, this shows up less as ice and more as persistent brown rings after our rare hard freezes.
- Excessive energy bills with no equipment change. Your kilowatt usage per degree-day jumps 15-30% compared to neighbors with similar homes, because you’re literally cooling the attic along with your living space.
- Drafty outlets and switch plates on exterior walls. Air sealing failures at the attic floor pressurize wall cavities, and the easiest escape path is through electrical boxes - you can feel it with a smoke pencil or even a candle flame on a windy day.
Before
AfterReplacement Cost & What’s Included
Most Owens Corning attic air sealing jobs in New Braunfels run $1,800 to $3,400 for attics between 1,200 and 2,800 square feet. The low end covers straightforward top-plate sealing with acrylic latex and one-component foam at penetrations; the high end includes rigid board damming at soffits, chimney saddles, and dropped soffit framing in older homes off River Road and the original Gruene subdivisions. What drives the range is access difficulty (truss height, existing insulation depth that must be moved and replaced), and the number of recessed can lights - each IC-rated fixture needs a sealed box or tenmat cover, and non-IC fixtures need replacement. Our price includes all materials, labor, moving and replacing existing Owens Corning insulation to access the deck, and post-job blower-door testing. Under Haven Standard Clause 1, you get the written price before anyone starts, a written scope, and a written warranty. The 365-Day Done Right Promise applies. We also publish before-and-after blower-door numbers on every job - a pressurization measurement that shows, in one figure, how much conditioned air your home was losing before and after the work.
DIY or Call Us?
Here’s what you can safely check yourself: shine a flashlight around the attic hatch perimeter for daylight gaps, look for pulled-away insulation at the eaves, and note any recessed lights buried in blown-in coverage - a fire hazard if they’re non-IC rated. Where DIY goes wrong: working around energized romex in 100-degree attic heat, identifying which penetrations are actually connected to conditioned space versus attic ventilation, and knowing when a gap is a required combustion air path for a gas appliance. The number on the blower-door printout tells you what the insulation did. Everything else is just talk. We carry FOAMULAR board, one-component foam, acrylic latex, and tenmat covers on every truck. Call (830) 243-6352 for a free estimate with a written price before any work starts.
FAQs
In the New Braunfels climate, properly installed acrylic latex and one-component foam at top plates and penetrations lasts 20-25 years; rigid board dams last the life of the structure if undisturbed. The bigger variable is whether subsequent trades - electricians, HVAC techs, pest control - disturb the seal. We document our work with photos so any future contractor knows exactly what was sealed and where. Call (830) 243-6352 if you need us to re-inspect after other work.
Spot repair is viable when the failure is isolated - one pulled-away soffit dam, a single new penetration for a security camera wire. Full replacement makes sense when the original work was incomplete (common in production homes in the Veramendi and Copper Ridge areas) or when you’re adding insulation and need the deck fully accessible. We assess this during our free estimate and tell you which path costs less over ten years.
Most jobs finish in one day: 4-6 hours for attics under 2,000 square feet with good access, up to 8 hours for larger or more complex spaces. We schedule blower-door testing before and after, which adds about 45 minutes to each end but gives you documented proof of improvement. Same-day availability when you call before noon.
We stock Owens Corning FOAMULAR rigid board in 1/2-inch, 3/4-inch, and 1-inch thicknesses, plus compatible one-component foam, acrylic latex caulk, and tenmat covers for recessed fixtures. We also carry Reflectix radiant barrier products where that’s the right solution for the assembly. Topside Attic Insulation New Braunfels is an independent service provider, not affiliated with Owens Corning. Call (830) 243-6352 - a live person answers 24/7.
Written by Wes Okafor, Owner, Topside Attic Insulation New Braunfels at Topside Attic Insulation New Braunfels, serving New Braunfels and nearby areas.