Demilec Insulation Removal in Woodland Hills: What to Know First
Demilec spray foam insulation removal in Woodland Hills typically takes one to two days for a standard attic and runs $1,800 to $4,500 depending on square footage and foam thickness. We’re an independent Demilec service provider, not a factory-authorized shop, which means we call out what we see without a brand loyalty filter. If you’ve got Demilec foam that’s failing, pulling away, or trapping moisture against your roof deck, this page covers what’s actually going on and what it takes to get it out. Call us at (559) 295-5362 for a written quote before any work starts.
This page is for Woodland Hills homeowners and building owners dealing with Demilec spray foam removal, whether it’s a full tear-out or spot remediation. We’ll get into failure modes, what removal actually involves, and honest pricing below.
Key Takeaways:
- Demilec open-cell and closed-cell foam fail differently, and the removal approach changes based on which you have
- Most Demilec removal jobs in Woodland Hills are driven by moisture trapping, off-gassing complaints, or improper installation
- You get a written price before we start, photo proof when the job’s done, and our 365-Day Done Right Promise on every removal
- We also service homes with Reflectix radiant barrier that needs to come out alongside failed foam
How Demilec Products Fail – and How We Fix Them
Demilec makes several spray foam lines, and we’ve pulled all of them out of Woodland Hills attics over the years. Here’s what actually goes wrong, and how we handle it on the removal side:
- Heatlok HFO Pro (closed-cell) pulling away from the roof deck. We see this constantly in Woodland Hills attics that bake at 140+ degrees in August. The foam cures rigid but the roof deck expands and contracts, and eventually the bond shears. What you’re left with is foam that looks fine from the living space but has air gaps behind it, which means the R-value is mostly fiction. Removal starts with cutting the foam away in sections so we can see the full deck surface before re-insulating.
- Sealection 500 (open-cell) holding moisture against framing. Open-cell foam is vapor-permeable by design, but in a Woodland Hills attic with bathroom fans venting into the space or a roof leak, that permeability turns into a sponge. We’ve opened attics where the open-cell foam was wet to the touch three feet from a vent stack. You can’t dry it in place. The foam has to come out, the source gets fixed, and then we talk re-install options.
- Off-gassing complaints from early Heatlok Soy formulations. Some Demilec foams installed between roughly 2008 and 2014 used soy-based polyols that, when mixed off-ratio on installation day, never fully cured. The result is a persistent chemical or fishy smell that gets worse in heat. No amount of air sealing fixes it. The cure is removing the offending foam entirely, cleaning the substrate, and starting over. We’ve done enough of these in the San Fernando Valley that we can usually confirm the failure mode within the first ten minutes in the attic.
- Improper installation depth or missed passes. Demilec products are only as good as the installer’s mix ratio and lift thickness. We pull foam that was sprayed too thick in one pass, which traps heat during cure and creates brittle, crumbly foam. Or the installer undershot the depth, leaving you paying for R-38 but getting R-19. When we remove this, we document everything with photos so you know exactly what you had versus what you thought you paid for.
- Demilec foam over degraded batt or vermiculite. In older Woodland Hills homes, we sometimes find Demilec spray foam applied directly over old fiberglass batts or even vermiculite. The foam adheres to the top layer, but the old material underneath compresses, settles, or holds humidity. The only fix is a full removal down to the ceiling drywall or roof deck. We bag and dispose of everything, including any hazardous older material, per current handling standards.
Our Demilec Insulation Removal Process
When you call us about Demilec removal in Woodland Hills, here’s what the job looks like from start to finish:
- 1
Call and schedule a site assessment. You reach a live person at (559) 295-5362, any hour. We set a time, and you get live arrival tracking so you know when we’re pulling up to your Woodland Hills home.
- 2
Attic inspection and foam identification. Chase Whitaker or one of our senior techs gets in the attic and identifies the exact Demilec product, its condition, the failure mode, and the square footage involved. We’ll tell you what we find in plain language, not a sales pitch.
- 3
Written scope and price. You get a line-item quote before anything starts, covering removal labor, disposal, any substrate repair, and re-insulation if you want it. No door-step surprises. The price we hand you is the price.
- 4
Containment and removal. We set up negative pressure containment so foam dust and particles stay out of your living space. Depending on the foam type and surface, we use a combination of scraping, cutting, and vacuum extraction. Demilec closed-cell foam typically requires mechanical removal; open-cell often pulls away with less resistance but makes more airborne particulates, so we run HEPA filtration throughout.
- 5
Substrate inspection and prep. Once the foam is out, we inspect the roof deck or walls for moisture damage, mold, or structural issues that were hiding behind the foam. We document everything with before-and-after photos you receive digitally.
- 6
Re-insulation or handoff. If you’re re-insulating, we’ll recommend a product matched to the job, not to whatever’s on the truck. We carry Owens Corning, Rockwool, Johns Manville, Knauf, CertainTeed, Icynene, GreenFiber, and yes, Demilec, if you want the same brand back in. Every job includes our 365-Day Done Right Promise, and if something fails that first year, the second visit is free.
What Demilec Insulation Removal Costs in Woodland Hills
Here are the dollar ranges we quote for common Demilec removal jobs in Woodland Hills, based on what we’ve priced across this market:
- Spot removal (under 200 sq ft): $800 to $1,500
- Standard attic removal (800 to 1,200 sq ft of open-cell): $2,200 to $3,800
- Full attic removal of closed-cell foam: $3,200 to $5,500, depending on foam depth and whether the underside of the roof deck needs scraping
- Removal plus disposal of contaminated or wet foam: Adds $400 to $900 depending on disposal requirements
- Removal plus re-insulation to code (R-38 attic): Full scope usually lands between $5,500 and $9,000
What moves the price: how thick the Demilec foam is, whether it’s open- or closed-cell, how accessible the attic is, and whether there’s old insulation underneath that also has to come out. Closed-cell foam is denser and harder to remove, so it costs more per square foot. We also factor in whether your Woodland Hills home needs containment for a second story or hard-to-reach attic access. Call (559) 295-5362 and we’ll give you a written estimate for your exact situation. The estimate is free, and it’s yours to keep either way.
Why Woodland Hills Homeowners Call Laurel Attic Insulation Woodland Hills for Demilec Work
Demilec removal isn’t a job for a handyman with a scraper and a Shop-Vac. It takes proper containment, the right extraction equipment, and someone who knows what a failed Demilec installation looks like. Chase Whitaker has been doing insulation work across the San Fernando Valley for well over a decade, including in the Warner Center corridor where older buildings bleed conditioned air constantly. If your attic is under-insulated, your AC is just paying rent to the outside air. We put everything in writing: a price before work starts, a 365-Day Done Right Promise, and a free second visit if something fails. Our techs are background-checked and uniformed, they show up at a live-trackable time, and you get before-and-after photos of every Demilec removal we do. If your home also has Reflectix radiant barrier that’s delaminating or needs to come out with the foam, that’s in our wheelhouse too. We’re the insulation specialists in the Relay Home Co. family, and we’ve been at this since 2003.
FAQs
If the foam was improperly installed and is failing, the warranty is already compromised in most cases. Demilec’s product warranties cover material defects, not installation errors by the spraying contractor. We’re an independent Demilec service provider, so we’ll give you an honest read on whether your issue is a material defect or an install problem, and we’ll document the condition of the foam thoroughly before we remove it so you have a record if you pursue a claim.
We can remove Demilec foam and begin re-insulation the same week, but not the same day in most cases. The substrate needs to be inspected and dried if moisture is present, and we don’t rush that step. A typical full attic removal plus re-insulation runs two to three days total in Woodland Hills. Call (559) 295-5362 for a schedule estimate for your specific home.
Common signs include a persistent chemical smell that worsens in heat, foam that’s visibly pulling away from the roof deck, unexplained indoor humidity, or energy bills that climbed after the foam was installed. We’ll come out and inspect. If the foam is fine and your problem is elsewhere, we’ll tell you that too. We’d rather lose a removal job than pull out insulation you didn’t need to remove.
Covering over failed Demilec foam is almost always a mistake. If the foam is trapping moisture, the problem continues behind the new layer and you’ve doubled the cost to fix it later. Removal is more expensive up front, but it’s the only way to actually solve the underlying issue. Ask us about partial removal options if you’re trying to balance cost with a real fix.
No, we’re an independent insulation company that works on Demilec products. We have no affiliation with Demilec, which means our recommendations are based on what’s right for your home, not on protecting a manufacturer relationship. We also install Demilec products when they’re the right fit for a new insulation job, so we know the material from both sides.
Written by Chase Whitaker, Owner, Laurel Attic Insulation Woodland Hills at Laurel Attic Insulation Woodland Hills, serving Woodland Hills and nearby areas.