Icynene Blown In Insulation in San Francisco: What to Know First
Icynene blown in insulation work in San Francisco typically runs $2,400 to $6,800 depending on attic square footage, current R-value, and whether we’re removing old material first. Most jobs are completed in a single day, and you’ll have a written price in hand before any equipment comes off the truck. We’re an independent Icynene service provider, which means we work on Icynene installations without being tied to manufacturer pricing or timelines.
This page is for San Francisco homeowners who have Icynene insulation, whether that’s a ProSeal or Classic Plus install from years back or a newer open-cell application, and need blown in insulation work done right. If your attic is underperforming, call (559) 245-9792 and we’ll give you a straight answer about what’s needed.
How Icynene Products Fail – and How We Fix Them
Icynene makes solid insulation, but every product line has weak points that show up differently in San Francisco’s coastal moisture. Here’s what we actually see in the field:
- ProSeal LE settling and gaps: This closed-cell line can shrink slightly at edges over time, especially where it meets older framing. In Sunset District homes built before 1940, we regularly find half-inch gaps along rafter bays that let fog-driven moisture in. We remove the compromised section and re-blow to full depth rather than patching over it.
- Classic Plus density breakdowns: The open-cell Classic Plus is forgiving, but when roof leaks saturate it, the material loses R-value and holds water against decking. We’ve pulled out saturated Classic Plus in the Richmond where homeowners had no idea a small flashing leak had been feeding into the insulation for years. The fix starts with addressing the moisture source, then removing and replacing the affected area.
- Improper depth from original install: A surprising number of Icynene blown in attics in San Francisco were under-filled at initial installation. Some contractors stop at R-30 when the space was quoted for R-38. We measure existing depth before adding anything, then top up to match what the attic actually needs for this climate zone.
- Compression from storage or foot traffic: Open-cell Icynene doesn’t bounce back once it’s been compressed. If a previous homeowner or contractor laid plywood over insulation for storage or duct access, that section has permanently lost R-value. We cut out the crushed material and re-blow it, usually in under an hour for small areas.
- Rodent damage in vented attics: San Francisco’s older homes have plenty of entry points, and rats and squirrels tunnel through open-cell Icynene like it’s made for them. The damage is always worse than it looks from the hatch. We remove the tunneled material, flag the entry points for you, and re-blow once the space is sealed.
Each failure mode has a different fix, and guessing wrong wastes money. That’s why we diagnose before we quote.
Our Icynene Blown In Insulation Process
- 1
Call and assessment: You reach a live person at (559) 245-9792. We ask about your attic access, when the Icynene was installed, and what you’re noticing: drafts, high bills, cold rooms. If it makes sense, we schedule a visit.
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Attic inspection: A background-checked, uniformed technician arrives inside the scheduled window. We measure current depth, check for moisture, test for air leaks, and map where insulation is missing or compressed.
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Written quote: Before any work starts, you get a written price covering removal (if needed), material, labor, and cleanup. That number is the number on the final invoice, no exceptions.
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The work: We remove damaged or inadequate Icynene, prep the space, and blow in fresh insulation to the correct R-value for San Francisco’s climate zone. We use Icynene where it’s the right call, and we’re also equipped to install products from Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Demilec, GreenFiber, and Reflectix if a different material serves the job better.
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Verification: We check depth across the full attic, confirm even coverage, and make sure vents remain unobstructed. You get a summary of what was installed and at what R-value.
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Written guarantee: Every job is covered by the 365-Day Done Right Promise. If the insulation fails within a year, we return at no charge and make it right.
What Icynene Blown In Insulation Costs in San Francisco
| Scenario | Typical Cost Range |
|---|---|
| Top-up existing Icynene to R-38 (600-800 sq ft attic) | $1,200 – $2,400 |
| Remove and replace open-cell Icynene (800-1,000 sq ft) | $3,800 – $5,500 |
| Remove and replace closed-cell Icynene (800-1,000 sq ft) | $5,000 – $7,800 |
| Spot repair (compression or rodent damage, under 100 sq ft) | $400 – $900 |
What moves the price: attic size, current R-value, whether removal is needed, accessibility (steep stairs, low clearance, unusual roof geometry), and moisture remediation if we find a leak. San Francisco homes in the Sunset and Richmond face more moisture exposure than Mission District properties, which can add prep time. The quote you receive is the price you pay. Call (559) 245-9792 for a free estimate.
Why San Francisco Homeowners Call Alden Insulation San Francisco for Icynene Work
We’re part of the Garrison Partners family, and the Garrison Standard has been in place since 2002. What that means for a San Francisco homeowner: written prices, written guarantees, and a background-checked crew that shows up on time. No vague half-day arrival windows. No price adjustments at the door. No mess left behind.
Our technicians know Icynene open-cell and closed-cell applications well enough to tell you honestly when the material can be topped up, when it should be replaced, and when a different product from our eight respected brands would serve you better. That last part matters: we’re not pushing Icynene because we have to, we’re installing it because it’s the right material for your attic. Bryce Holloway has spent two decades working insulation jobs, including stretch after stretch on older Victorian and Edwardian homes where thermal performance fights the coastal fog. Good insulation doesn’t announce itself. You just stop noticing the cold.
FAQs
Manufacturer warranties on Icynene products typically apply to the material, not the labor. As an independent Icynene service provider, we can’t file claims on your behalf, but we can document the existing installation and advise whether a warranty claim through the original installer is realistic. Our work carries its own written 365-day guarantee regardless of what the manufacturer covers. Call (559) 245-9792 and we’ll walk you through what’s claimable.
Yes. We can match Icynene open-cell or closed-cell product lines for spot repairs and partial replacements. For older formulations that are no longer manufactured, we’ll recommend the closest current equivalent and note the R-value difference on your written quote so you know exactly what’s changing before we start.
In most San Francisco attics where the existing Icynene is dry and uncompressed, topping up saves between 40% and 60% compared to full removal and replacement. Full replacement only makes sense when there’s moisture damage, rodent contamination, or the original material was installed so poorly that leaving it would compromise the new work. We’ll tell you honestly which route your attic needs. Call (559) 245-9792 for a straight assessment.
We answer calls 24/7 with a live person, and most San Francisco jobs are scheduled within a week. If you’ve had a roof leak or pest damage that requires immediate attention, tell us on the phone and we’ll do our best to see you sooner. Emergency moisture situations in open-cell Icynene should not wait, since saturated material loses R-value quickly and can damage decking.
We service the Icynene lines most common in San Francisco homes: ProSeal, Classic Plus, and ProSeal LE. If you have an older formulation or a less common product, we’ll assess it during inspection and give you a straight answer about options and cost before any work is authorized.
Written by Bryce Holloway, Owner, Alden Insulation San Francisco at Alden Insulation San Francisco, serving San Francisco and nearby areas.