Owens Corning Attic Air Sealing: The Burbank Owner’s Guide
Most Owens Corning attic air sealing jobs in Burbank run $1,800 to $3,400 installed, depending on attic square footage and how many top plates, can lights, and duct chases need sealing. We stock Owens Corning-compatible acrylic latex sealants, polyurethane foam backer, and high-temperature silicone for flue penetrations on every truck, and we can usually inspect and start work same-day you call. Homeowners typically figure out something’s wrong when their upstairs bedrooms won’t cool below 78 degrees even with the AC running flat out, or when they pull down the attic ladder and feel a column of 140-degree air drop into the hallway.
Which Owens Corning Models This Applies To
Owens Corning doesn’t sell attic air sealing as a single named “system” the way they sell insulation batts or blown-in fiberglass. What we’re talking about is the air-sealing layer that should sit beneath any Owens Corning insulation product, whether that’s PINK Next Gen Fiberglas batts, ProCat blown-in, or their AttiCat expansion system. The compatibility question isn’t about matching a model number; it’s about whether your attic was sealed to ASTM E2178 standards before the insulation went in.
We’ve found Owens Corning batts installed in Burbank homes from 2018 through 2024 where the insulation itself is fine but the air sealing underneath is missing or failing. Check for the Owens Corning logo on any existing batts, or the yellow AttiCat hose ports if blown-in was used. We carry Owens Corning-compatible sealants rated for the temperature swings Burbank attics see, 40 degrees in January to 150-plus in August. We also stock Reflectix radiant barrier tape for homeowners who have that system layered in. We’re an independent service provider, not affiliated with Owens Corning.
Signs Your Owens Corning Attic Air Sealing Is Failing
- Hot second floor that the AC can’t catch. Conditioned air is escaping through gaps in the top plates and being replaced by attic air pulled down through light fixtures and switch boxes. In Burbank’s Magnolia Park neighborhood, we see this constantly in 1950s and 1960s ranch homes where the original builder never sealed the wall-to-attic junction.
- Dust streaks around ceiling can lights or HVAC registers. Those dark lines are filtration soiling, airborne particles getting pulled through gaps by the pressure difference between your conditioned space and the attic. It means your attic is breathing into your living space, not just losing air.
- Ice damming or moisture stains on the ceiling in winter. Warm, humid interior air hits the cold roof deck and condenses. Burbank doesn’t get Midwestern ice dams, but we do get enough January chill for this to show up as water spots or bubbling paint, especially near bathroom vents that weren’t sealed at the ceiling penetration.
- Insulation that looks settled or disturbed in patches. Air moving through fiberglass batts at velocity will shift the material over time, creating thin spots exactly where the leaks are worst. If you see valleys or channels in your Owens Corning batts, air is moving through them, not just around them.
- Energy bills that climb year over year with no rate change. A properly sealed attic with good insulation holds steady. When sealing fails, the HVAC runtime increases incrementally, and most homeowners don’t notice until the summer bill jumps 30 percent or more.
Before
AfterReplacement Cost & What’s Included
| Scope | Typical Range in Burbank |
|---|---|
| Attic air sealing only, small home (under 1,200 sq ft attic) | $1,800 - $2,400 |
| Attic air sealing, typical Burbank single-family (1,200 - 2,000 sq ft attic) | $2,400 - $3,000 |
| Attic air sealing plus top-off of existing Owens Corning insulation | $3,000 - $4,200 |
| Full removal, seal, and re-insulate with new Owens Corning batts or blown-in | $4,500 - $6,800 |
What drives the range: attic accessibility (truss height, whether there’s decking to remove), number of penetrations to seal, and whether we find failed or missing baffles that need correction before we close up. Every job gets a written price before any work starts, per Haven Standard Clause 1. The sealant work carries our 365-Day Done Right Promise, and on every applicable job we run a blower-door test before and after so you see the CFM50 drop in writing. The R-value is what the label says. The performance is what the blower-door test says. We care about the second number.
DIY or Call Us?
There’s a short list of things a homeowner can safely check. Make sure your attic access hatch has weatherstripping and a latch that pulls it tight to the frame. Look for obvious gaps around plumbing vents or chimney flues that you can see from the attic side. Beyond that, the work gets technical fast.
Sealing top plates requires finding every stud bay intersection between wall drywall and attic floor, which means moving insulation you already have. Can lights in pre-2010 Burbank homes are often non-IC rated and can’t be buried or sealed with standard foam without creating a fire risk. Polyurethane foam application needs controlled expansion and skin protection; the off-gassing in a 140-degree attic is not something you want to learn about the hard way. And without a blower-door test, you’re guessing whether you found the leaks that actually matter. Wes Okafor and our crew have sealed over 9,000 homes since 2016, and we’ve yet to see a DIY job that wouldn’t have been faster and more effective if we’d just handled it from the start. Call (213) 816-1699 and we’ll give you a written price, no charge to look.
FAQs
Properly installed acrylic latex and polyurethane sealants last 20 to 30 years in a ventilated California attic. The failure point is almost never the sealant itself; it’s new penetrations added after the original work, like a security system installer drilling through a sealed top plate, or a roofer pulling decking and not restoring the seal. We document every sealed point with photos so future trades know where not to cut. Call (213) 816-1699 if you’re unsure whether your original sealing is intact.
Spot repair is common and often sufficient. We locate the active leaks with a blower-door test and infrared camera, then seal only what’s failed rather than stripping the attic. Full replacement only makes sense if you’re already removing insulation for another reason, or if the original work was done with low-temp caulk that’s now brittle from Burbank’s heat cycles. We offer free second opinions on any written estimate if you want us to compare scope.
Most Burbank attic air sealing jobs finish in one day, four to six hours for a typical single-family home. Two days if we’re coordinating with an insulation top-off or full replacement, or if the attic has limited access and we need to remove and replace decking. You’ll get a named technician and a text when they’re on the way, under Haven Standard.
We stock all sealants, backer rod, fire-rated foam, and high-temp silicone for flue penetrations on every truck. We don’t stock Owens Corning insulation itself on the vehicle; we source batts or blown-in to match your existing product after measuring what’s there. No proprietary lock-in, no waiting on special orders. Call (213) 816-1699 for same-day inspection.
Ready to stop your attic from pulling conditioned air out of your living space? Call (213) 816-1699 for a free written estimate. We’ll inspect your Owens Corning insulation and sealing layer, run a blower-door test if applicable, and give you a flat price before any work starts. Every job closes with a Documented Photo Record and, where we can test it, before-and-after pressurization numbers you can keep.
Written by Wes Okafor, Owner & Lead Insulation Technician, Topside Attic Insulation Burbank at Topside Attic Insulation Burbank, serving Burbank and nearby areas.