CertainTeed Attic Air Sealing Nationwide

CertainTeed Attic Air Sealing: The Burbank Owner’s Guide

Most CertainTeed attic air sealing repairs in Burbank run between $340 and $780 installed, depending on attic square footage and how many top plates, can-light boots, and duct chases need resealing. We stock CertainTeed-compatible acrylic latex sealants, fire-rated foam, and polyethylene gasket tape on every truck, and we can typically inspect and quote same-day. Homeowners usually figure out something’s wrong when their upstairs rooms won’t hold temperature despite new insulation, or when their HVAC runs constantly through a Burbank August afternoon while the attic feels like a convection oven.

Call (213) 816-1699

Which CertainTeed Models This Applies To

CertainTeed doesn’t sell a single branded “attic air sealing kit.” What we’re talking about is the air-barrier system CertainTeed specifies in its ComfortTrack and InsulSafe installation manuals: the bead of sealant along top plates, the gasketed box around recessed lights, the sealed dam around attic pull-down stairs, and the fire-stopped foam around chimney and flue penetrations. If your attic was insulated by a CertainTeed-certified contractor between 2012 and 2022, these are the details that were supposed to be completed before the blown-in fiberglass went down.

To identify what you’ve got, check the insulation bag remnants left in your attic joists. CertainTeed bags are printed with a lot code and an R-value chart; the installation date sticker (usually on the attic access hatch or a rafter) should reference ASTM C665 and ICC-ES ESR-1366. The critical compatibility gotcha: CertainTeed’s 2018 and later specs call for intumescent acrylic sealant at all top plates in climate zone 3B, which is Burbank’s zone. Pre-2018 jobs often used standard latex, which cracks in our dry heat cycles. We carry both, but we’ll match what’s specified for your job year.

OEM vs. aftermarket: CertainTeed doesn’t manufacture sealants; they spec products from Tremco, Hilti, and 3M. We source the identical spec-grade materials, not proprietary-labeled cans. The performance is identical; the price is lower because you’re not paying for a middleman logo.

Signs Your CertainTeed Attic Air Sealing Is Failing

• Upstairs rooms drift 8-12 degrees from the thermostat setting. This happens when sealant beads at top plates have cracked or pulled away from the drywall, creating a thermal bypass - a direct path for conditioned air to escape into the attic. In Burbank’s Magnolia Park ranch homes, we see this where the original 1960s drywall meets newer additions with different expansion rates.
• Dust streaks on ceiling edges or around can lights. Those dark lines are filtration soiling: attic air, pulled through gaps by the pressure difference between your living space and the attic, deposits fiberglass and dust on the ceiling paint. The underlying cause is a failed seal at the drywall penetration.
• Ice damming or heavy moisture on roof sheathing in winter. Even Burbank gets enough January chill for this. Warm, humid interior air leaking through bypasses hits the cold underside of the roof deck and condenses. The CertainTeed spec calls for sealed chases around plumbing vents and electrical stacks; when that seal fails, moisture follows.
• HVAC runtime increases 20-40% year-over-year with no equipment change. Your unit is working harder to replace air that’s escaping faster than the duct system can deliver it. The blower-door test - a pressurization reading that shows, in one number, how much air your building envelope is losing - will typically read 3,500 CFM50 or higher when the sealing has degraded.
• New insulation performs worse than the old insulation it replaced. This is the sequencing failure. If a contractor blew new CertainTeed InsulSafe over unsealed gaps, the R-value on the bag doesn’t matter. The R-value is what the label says. The performance is what the blower-door test says. We care about the second number.

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Replacement Cost & What’s Included

What drives the range: attic square footage, accessibility (truss height and whether there’s a permanent floor), number of penetrations to seal, and whether we’re correcting a previous contractor’s skipped steps. Every quote is a flat, written price before any work starts - Haven Standard Clause 1. No hourly surprises. The price includes all spec-grade sealants and foams, labor, cleanup, and a Documented Photo Record of every sealed penetration. On applicable jobs, we provide before-and-after blower-door numbers so you can verify the performance change. Work is covered by our 365-Day Done Right Promise.

DIY or Call Us?

Here’s what you can safely check yourself: shine a flashlight across the attic floor on a bright day. If you see daylight through gaps at the top plates, or if the sealant around your can lights is crumbly and orange ( CertainTeed’s pre-2018 latex oxidizes to a distinct rust color), you’ve got degradation. Mark the spots with tape and note the locations.

Here’s where DIY goes wrong: attic air sealing involves working at height on joists or planks, often near live electrical in recessed housings, and applying fire-rated materials per California Title 24 requirements. The wrong foam near a flue or recessed light creates a real hazard. We don’t recommend homeowners handle this. Wes Okafor and our crew have been working Burbank attics - including those Magnolia Park ranches - long enough to spot the thermal bypasses that aren’t obvious from the hatch. Call (213) 816-1699 and we’ll inspect, quote a written flat price, and schedule the work. Estimates are free.

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