Owens Corning Attic Insulation Nationwide | Walt’s Insulation

Owens Corning Attic Insulation: The Glendale Owner’s Guide

We stock and install Owens Corning attic insulation throughout Glendale, with most blown-in jobs running $1,400-$3,200 depending on square footage and attic access. Same-day or next-day installs are available for most homes. If you’re here because your energy bills have crept up and your upstairs rooms feel like a sauna by 3 p.m. in a Glendale summer, odds are your attic insulation has settled, been displaced by rodents, or was never installed to the right depth in the first place. We see it on nearly every older home north of the 134 and plenty of newer builds too.

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Which Owens Corning Models This Applies To

When Glendale homeowners say “Owens Corning attic insulation,” they’re almost always talking about one of two product lines: Owens Corning AttiCat (the pink blown-in fiberglass system) or Owens Corning ProPink batts and rolls. AttiCat is the one we work with most in Southern California attics because it fills irregular joist bays and settles into corners that batts leave gaping. The batt line spans R-13, R-19, R-30, and R-38; AttiCat covers the same range by depth, not by numbered batt. A quick way to identify what you have: AttiCat comes loose and pink, installed with a blowing machine; ProPink comes in pre-cut kraft-faced or unfaced rolls with the R-value printed on the facing. We’re an independent service provider, so we’re not tied to any one manufacturer’s parts book, but we know Owens Corning’s products well enough to match coverage charts exactly: R-38 means roughly 10.25 inches of settled AttiCat, and getting that depth right is where half the installers in this city fall short. We also work with Reflectix radiant barrier when a Glendale attic needs a heat-reflective supplement under the roof deck.

Signs Your Owens Corning Attic Insulation Is Failing

• Upstairs rooms won’t hold temperature. Insulation doesn’t “die,” but it can lose effectiveness. Settling of 20-30% is common in fiberglass installed more than 15 years ago, and a settled R-38 may only be performing like an R-26. That gap shows up on your bill and your second-floor thermostat.
• You can see the joists. If the top of your ceiling joists are visible above the insulation line, you’re at half the depth you should be for our climate zone. Glendale falls into Title 24 climate zone 9, where R-38 attic insulation is the current code baseline for existing homes being upgraded.
• Rodent or pest activity. Rats, squirrels, and roof rats love a fluffy Owens Corning attic. They tunnel through it, compress it, and foul it. You’ll see trails or flattened paths, and the insulation’s performance drops sharply in those areas. This is one of the most common calls we get in Glendale neighborhoods with mature trees, especially around Verdugo Hills and Montrose.
• Damp or musty smell from the attic hatch. Owens Corning fiberglass loses R-value when it’s wet. If you’ve had a roof leak, a bathroom vent exhausting into the attic, or condensation from poor ventilation, the insulation may be matted down and holding moisture. We’ve pulled out AttiCat that was compressed to a third of its original thickness.
• Drafty rooms directly under recessed lights or can lights. Older recessed fixtures act like chimneys. If the insulation around them is missing or the fixtures were never air-sealed, you’ll feel the heat loss before you ever go up and look. This is almost always an air-sealing issue, not an insulation-quality issue, but the two have to be fixed together.

Replacement Cost & What’s Included

Blown-in Owens Corning AttiCat installed in a typical Glendale attic runs $1,400-$2,200 for a 1,200-1,600 square foot attic going from old, compressed insulation to a fresh R-38. Larger attics or homes where we’re also removing rodent-soiled insulation run $2,500-$3,800, with removal cost driven by attic accessibility and the level of contamination. Batts run slightly higher per square foot because they’re more labor to fit correctly around framing and wiring. Every quote includes removal of the old insulation where it’s needed, air sealing of top plates and penetrations, exact depth marking, and the full Owens Corning coverage warranty plus our lifetime workmanship guarantee. We don’t charge a trip fee in our service county, and we’re happy to give you a free second opinion if you’ve already got a written estimate from someone else.

DIY or Call Us?

You can absolutely inspect your own attic: flashlight, dust mask, and a tape measure will tell you how much insulation you have and whether it’s dry and evenly distributed. Measure the depth in several spots and compare it against the R-value chart printed on the Owens Corning bag. What you shouldn’t do is climb a ladder with a rented blower machine and DIY this on a Saturday. Blowing insulation correctly means managing a machine, maintaining consistent depth, working around live electrical wiring, and not stepping through the ceiling. Fiberglass dust in an enclosed attic is also an irritant that requires proper PPE. The honest answer is that for most Glendale homeowners, the math on DIY doesn’t work once you factor in the machine rental, the wasted material from inexperience, and the very real chance of putting a foot through drywall. If you want it done right the first time, call us at (747) 246-7237 and we’ll get an assessment scheduled before you’re tempted to watch another YouTube video about it.

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