Icynene Attic Insulation Nationwide | Walt’s Insulation

Icynene Attic Insulation: The Glendale Owner’s Guide

Replacing or topping up Icynene attic insulation in Glendale typically runs $2,800 to $6,500 for a standard 1,200 to 1,800 square foot attic, depending on whether you’re spot-filling failed sections or doing a full removal and re-spray. We stock Icynene-compatible open-cell and closed-cell foam on our trucks and can usually be on-site within 24 to 48 hours for an assessment. Most Glendale homeowners discover the problem the same way: a bedroom that suddenly won’t hold temperature, an AC bill that jumped $60 or $80 in a single summer month, or a musty smell that traces back to the attic access hatch. In older Glendale homes, especially the 1940s and 1950s builds near Brand Park and the Rossmoyne district, we frequently see Icynene that was installed 15 to 20 years ago starting to separate from the roof deck at the seams.

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Which Icynene Models This Applies To

This page covers the two Icynene product families you’ll actually find in Glendale attics: Icynene Classic (open-cell, half-pound foam) and Icynene ProSeal (closed-cell, two-pound foam). The Classic is the one we see most often in residential attics built or retrofitted between 2004 and 2018. ProSeal shows up more in newer construction and additions, particularly around Verdugo Woodlands and the hillside properties where code called for a higher R-value per inch.

Here’s the compatibility gotcha most homeowners miss: the two foams are not interchangeable in an existing attic. If your attic was originally sprayed with open-cell Classic, you cannot spot-fill the failed area with closed-cell ProSeal. The vapor permeability differs, and in Glendale’s dry-summer, wet-winter climate, trapping moisture between two different foam types is a fast path to mold behind the drywall. We match the existing product family, not just the brand name. Look for the install card stapled to a rafter or truss near the hatch; if that’s gone, we identify the foam by density, cell structure, and age. Icynene’s warranty documents also specify a minimum thickness for code compliance (Classic needs about 5.5 inches for R-21 in an unvented attic assembly), and we verify that against your roof deck before quoting a repair. OEM Icynene material is what we install; aftermarket equivalents exist, but for foam insulation, we’ve never seen one that performs as reliably in the field, so we don’t offer them.

Signs Your Icynene Attic Insulation Is Failing

• Temperature drift between rooms. The bedroom over the garage stays 8 to 10 degrees warmer than the rest of the house. Cause: the foam has pulled away from the roofline at a seam near that end of the attic, letting heat pour through in summer.
• A slow climb in your DWP bill without a change in usage. Glendale Water & Power rates haven’t gotten friendlier, but a failing section of Icynene will compound that fast. We’ve had customers see a 20 to 30 percent jump year-over-year with no other change. Cause: loss of the continuous air barrier, not just the R-value.
• Visible shrinkage or gaps along rafters. If you’ve been up in the attic and the foam looks like it pulled back from the wood by even half an inch, that’s a material failure, not normal aging. Open-cell Icynene should never shrink if installed correctly.
• Damp or musty smell after rain. A broken seam in ProSeal on a hillside home near Chevy Chase Canyon can let moist air in from above. Closed-cell foam acts as a moisture barrier, and once a gap opens, condensation forms on the back side.
• Pest activity in the attic. Rats and squirrels can chew through cured Icynene, and in Glendale’s older neighborhoods, they do. If you’re hearing scratching after dark, get it checked before the damage spreads. Chewed foam loses its air-seal performance entirely.

Replacement Cost & What’s Included

Here’s the honest pricing picture for Glendale specifically. Spot removal and re-spray of a failed section (typically 50 to 150 square feet of roof deck) runs $900 to $1,800. A full attic removal and re-insulation runs $2,800 to $6,500, driven mostly by attic square footage, roof pitch, and how much old foam needs to be cut out and bagged. Homes with low-slope roofs and tight access, common in the Adams Hill and Citrus Grove areas, land at the higher end because the work is slower.

Every price includes material, labor, cleanup, and disposal. The work is covered by our Done Right Promise for as long as you own the home. We take $40 off any repair over $200, and seniors and veterans always get 10 percent off, no expiration, no fine print.

DIY or Call Us?

What you can safely do yourself is limited. You can inspect the attic visually with a good flashlight: look for gaps along the rafters, discolored or darkened foam, and any signs of pests. Take photos, measure the approximate failed area, and check for the Icynene product label near the hatch. That information saves us time on the assessment. What you should not do is attempt to re-spray foam yourself. Two-component spray foam requires heated hoses, proper PPE including respiratory protection, and precise mixing ratios. Get the ratio wrong and the foam won’t cure properly, which means you spend the weekend scraping sticky half-foam off your rafters. We’ve had to fix that exact situation more than once in Glendale, and it always costs more than calling us first. Do it right the first time or you’ll be doing it twice, and the second time costs more. If you’re not sure what you’re looking at, call (747) 246-7237 and describe it. A live person answers, and we’ll tell you straight whether it’s worth a service visit.

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