Owens Corning Blown-In Insulation in Palo Alto: What to Know First
We provide independent Owens Corning blown-in insulation service in Palo Alto, with most attic jobs completed in one day and a written price delivered before any work starts. Our typical turnaround from call to crew on-site is 24-48 hours for standard jobs, and we publish before-and-after blower-door numbers on every applicable project so you can verify the air-sealing result yourself. This page is for homeowners who already have Owens Corning insulation in place and need repair, top-up, or full replacement with the same or compatible materials. Call (650) 352-3577 to schedule a free estimate with a written scope, or bring us a competing written quote for our free second opinion.
How Owens Corning Products Fail - and How We Fix Them
- AttiCat PINK Fiberglass Blown-In settling below labeled R-value. The PINK fiberglass loose-fill in many Palo Alto attics, especially those installed during the 2012-2018 building boom, compacts over 7-10 years in our dry climate and loses up to 15% of its thermal resistance. We measure the settled depth against the coverage chart printed on every Owens Corning bag, then calculate whether a top-up to current Title 24 standards or full replacement is the honest call.
- ProCat Loose Fill Fiber Glass bridging over irregular joist bays. In the older ranch homes near Midtown Palo Alto, ceiling framing is rarely uniform. ProCat blown at standard velocity skips the narrow bays and piles in the wide ones, creating thermal bypasses we locate with infrared during our initial survey. We break those bridges by hand, then re-blow at reduced hose pressure with targeted air sealing completed first.
- InsulSafe SP and XC blown-in fiberglass contaminated by rodent activity. The non-irritant treatment in InsulSafe lines doesn’t deter nesting; we’ve pulled saturated batts and loose fill from attics near Old Palo Alto where the access panel gap was never sealed. We remove the contaminated material, sanitize the deck, rodent-proof the entry points with steel mesh, then reinstall with new Owens Corning or compatible product.
- AttiCat system hose clogs from improper initial installation. When the original installer ran the AttiCat machine too fast or with excessive moisture in the line, the fiberglass forms hard nodules that block uniform distribution. We extract those nodules, inspect the remaining fill for density consistency, and re-blow to the correct weight-per-square-foot specification.
- Top plate and penetration leaks rendering any Owens Corning fill ineffective. This isn’t a product failure, it’s an installation failure we see constantly: blown-in fiberglass or cellulose layered over unsealed can lights, plumbing stacks, and electrical penetrations. Seal the leaks first. The insulation has nowhere to work if the air is moving around it. We complete air sealing of all top plates, fixture boxes, and chimney chases before any new Owens Corning material goes in.
Our Owens Corning Blown-In Insulation Process

- 1
Call and scope. A live person answers at (650) 352-3577 24/7. We schedule a site visit, and you receive a text with your technician’s name when they’re en route.
- 2
Attic inspection and infrared survey. We document existing Owens Corning product type, depth, and condition; identify thermal bypasses, moisture staining, and rodent evidence; and photograph every finding for your record.
- 3
Blower-door test (if scoped). We pressurize the house to measure CFM50, the single-number reading that quantifies envelope leakage. This establishes your baseline before any air sealing begins.
- 4
Air sealing first, always. Top plates, can lights, plumbing and electrical penetrations, chimney chases, and attic access panels are sealed with fire-rated foam, caulk, or rigid baffles as code requires. No insulation is added until this is complete.
- 5
Owens Corning blown-in installation. We specify exact product, bag count, and target depth based on your joist spacing and Title 24 requirements. OEM Owens Corning or compatible materials from Johns Manville, Knauf, or Rockwool, depending on availability and your preference.
- 6
Final test, photo record, and written closeout. Post-installation blower-door test where applicable, documented photo record of all work areas, and written report with R-value achieved, locations sealed, and final CFM50 if tested. Your 365-Day Done Right Promise warranty is included.
What Owens Corning Blown-In Insulation Costs in Palo Alto
Most attic top-up jobs with Owens Corning blown-in fiberglass in a Palo Alto home of 1,800-2,400 square feet run between $2,800 and $4,600. Full removal and replacement with air sealing typically falls between $5,500 and $9,200, depending on attic square footage, accessibility, and whether rodent cleanup is required.
What moves the price: settled depth of existing fill (more material needed), number of can lights requiring airtight covers, attic access difficulty (steep pitch, limited hatch size), and whether the original Owens Corning product is contaminated and must be extracted. We deliver a flat written price before any work starts, no exceptions. Call (650) 352-3577 for your free estimate, or bring us any written competing quote for our free second opinion.
Why Palo Alto Homeowners Call Topside Attic Insulation Palo Alto for Owens Corning Work

We’ve sealed and insulated over 9,000 homes since 2016, every one with a written price before work started and a documented record when the crew left. Wes Okafor, our owner, learned air sealing before insulation at Richard J. Daley College, and that sequence still governs every Palo Alto job we run. Our technicians are background-checked and uniformed; calls are answered by a live person around the clock. We carry Owens Corning, Johns Manville, Knauf, Rockwool, and Reflectix, so your home isn’t locked into a single product line if a better fit exists. Every job closes with photos, a written report, and the 365-Day Done Right Promise: if it’s not done right, we make it right.
FAQs
No. Owens Corning’s limited warranty on installed insulation products covers manufacturing defects, not installation or subsequent service. As an independent Owens Corning service provider, we use OEM or compatible materials and document everything, so any valid manufacturing claim remains intact. Call (650) 352-3577 if you have questions about your specific product line.
Usually yes for current lines like AttiCat and ProCat; discontinued series may require compatible substitution. We verify the existing product during inspection, check Owens Corning availability, and specify the match or equivalent in your written scope before work begins. For a free assessment of what you have and what we can source, call (650) 352-3577.
Topping up costs roughly 40-60% less than full removal and replacement, but only makes sense if the existing fill is dry, uncontaminated, and hasn’t settled below recoverable depth. We test for those conditions during inspection and tell you honestly which path preserves performance for your dollar. Schedule a free evaluation at (650) 352-3577.
Most standard attic jobs are completed in one day; jobs requiring full extraction, air sealing, and reinstallation typically take two days. We schedule within 24-48 hours of your call for non-emergency work. Call (650) 352-3577 to check current availability.
We use OEM Owens Corning blown-in products when available and appropriate; for some applications, compatible materials from Johns Manville, Knauf, or Rockwool perform equally or better at equivalent or lower cost. We specify exactly what we’re installing in your written scope, with no proprietary lock-in. Call (650) 352-3577 to discuss material options for your job.
Written by Wes Okafor, Owner, Topside Attic Insulation Palo Alto at Topside Attic Insulation Palo Alto, serving Palo Alto and nearby areas.