Demilec Insulation Removal in Fresno: What to Know First
Removing Demilec spray foam insulation in Fresno typically costs $2.50 to $5.00 per square foot depending on foam type, depth, and accessibility, with most single-room jobs done same day and full attics completed in one to two days. We’re an independent Demilec service provider, not a manufacturer affiliate, so our recommendations are based on what we see in Fresno attics, not a sales script. If you own a home with Demilec foam that needs to come out, call (559) 666-2260 and we’ll give you a written price before any work starts.
This page is for homeowners whose Demilec insulation has failed, gotten wet, or been compromised by rodents or remodel work. We’ll cover what actually goes wrong with Demilec products in the Central Valley, what removal costs, and how we do the job without wrecking your ceiling or your schedule.
How Demilec Products Fail – and How We Fix Them
Demilec makes quality spray foam. But Fresno summers hit 105 degrees for weeks straight, and attics bake. Amost everything that fails in a Demilec installation here traces back to one of five issues we see repeatedly:
- Sealection 500 open-cell saturation: Open-cell foam absorbs water like a sponge. A minor roof leak over a Tower District bungalow can go unnoticed for months while the foam soaks up moisture, loses its R-value, and starts growing mold. By the time a homeowner notices the musty smell, the foam has to come out. We remove the saturated material, treat the decking, and prep the space for dry new insulation.
- Heatlok HFO delamination from roof decking: Closed-cell foam should bond tightly to the sheathing. When we see Heatlok HFO pulling away in Fresno homes, it’s usually because the installer sprayed in the wrong temperature window. Central Valley mornings can be cold and afternoons brutal. If the substrate was too cold during application, the foam never chemically bonded. Delaminated foam loses its air-sealing value and traps condensation behind it. We cut it out at the bond line and remove every layer back to the decking.
- APX 2.0 off-gassing complaints: Demilec’s APX 2.0 line can off-gas if the A and B sides weren’t mixed at the correct ratio. Homeowners report a fishy or chemical smell that doesn’t fade. That smell means the foam didn’t cure right, and the only real fix is removal. We’ve removed improperly mixed APX 2.0 from newer homes out past Shaw Avenue where the smell was strong enough to migrate into living spaces.
- Rodent damage in exterior walls: Rats and mice tunnel through open-cell Demilec foam in Garfield and Sunnyside older homes. The foam becomes a highway. Removal isn’t just about pulling insulation, it’s about getting every contaminated scrap out before new material goes in. Rodent waste in insulation is a health issue, not a cosmetic one.
- Remodel-add-on mismatches: When a homeowner adds a room or reconfigures walls, old Demilec foam often sits adjacent to new fiberglass or cellulose. These layers prevent the cavity from drying properly. We remove the old foam so the whole assembly can be insulated as one continuous system.
Our Demilec Insulation Removal Process
Every Demilec job we run in Fresno follows the same sequence. No shortcuts, no surprises.
- 1
Inspection: We map the foam location, measure depth, and identify the Demilec product by visual inspection. Sealection 500 looks and cuts differently than Heatlok HFO, and the removal method changes accordingly.
- 2
Written quote: You get a line-item price before a single tool comes off the truck. That number is the number on your invoice.
- 3
Containment: We seal off the work area with plastic sheeting and run negative air when needed. Spray foam removal creates dust that travels fast through a Fresno house if you don’t control it.
- 4
Removal: We use hand scrapers, oscillating tools, and vacuum systems matched to the foam type. Closed-cell Demilec foam is harder to remove than open-cell, but slower hand work keeps your drywall intact.
- 5
Substrate inspection: Once the foam is out, we look at what’s underneath: decking rot, rodent damage, wiring concerns. If we find something that needs a different trade, we tell you straight.
- 6
Cleanup and guarantee: We leave the space broom-clean and give you a written 365-Day Done Right Promise. If the removal work fails within a year, we come back at no charge.
What Demilec Insulation Removal Costs in Fresno
Most Demilec removal jobs in Fresno run between $2.50 and $5.00 per square foot of foam surface area. A 12-by-12 room with open-cell Sealection 500 on the ceiling typically falls in the $1,800 to $3,200 range all in. A full attic with closed-cell Heatlok HFO can run $4,500 to $9,000 depending on square footage and how stubbornly the foam bonded to the decking.
Three things move the price: open-cell is faster and cheaper to remove than closed-cell; foam installed in tight kneewall cavities takes longer than flat ceiling planes; and contaminated foam (rodent waste, mold) requires more containment and disposal care. Estimates are free. Call (559) 666-2260 and we’ll give you a written number before anything starts.
Why Fresno Homeowners Call Alden Insulation Fresno for Demilec Work
We’re part of the Garrison Partners family, established 2002, and every job we run in Fresno follows The Garrison Standard. That means a written price before work begins, a written 365-Day Done Right Promise after the work is done, and a background-checked, uniformed crew that shows up inside the window we scheduled. Bryce Holloway grew up in Los Angeles and learned his fundamentals at LATTC before spending two decades learning what insulation actually does to a house, and he knows exactly how a Central Valley summer punishes an attic with compromised foam. Good insulation doesn’t make the news. That’s the point.
We service all major insulation brands, including Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, GreenFiber, and Reflectix. If your Demilec foam needs to come out and you’re deciding what goes back in, we’ll give you straight answers about every option.
FAQs
It can, depending on the failure type and your installer’s terms. Demilec’s warranty typically applies to the original installation, not to removal or replacement work done by an independent contractor. We recommend documenting the failure thoroughly before removal, and we can help you photograph and describe the condition for any warranty claim you might pursue. Call (559) 666-2260 if you need guidance before scheduling removal.
We can usually schedule Demilec removal within a week of your call, and single rooms are done same day. Full attics take one to two days depending on foam type and square footage. Emergency removals for water-saturated foam or rodent contamination get priority scheduling. Call (559) 666-2260 and we’ll give you a straight timeline.
Leaving failed foam in place is cheaper on day one and more expensive every month after. Saturated open-cell foam loses R-value fast and feeds mold. Delaminated closed-cell foam traps moisture against your roof decking. Rodent-contaminated foam is a health liability. Removal done right costs less than the structural damage you’ll pay for later. We’ll give you a written price so you can compare honestly.
In most Fresno homes, yes. Open-cell foam releases from drywall fairly cleanly with the right hand tools. Closed-cell Demilec foam like Heatlok HFO bonds harder and requires more care, but our techs work slowly at the bond line to avoid tearing the paper face on your drywall. Some ceiling work requires access from the attic side, and we’ll tell you before we start if that’s the case.
That depends on your home, your budget, and what failed the first time. We install Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, GreenFiber, and Reflectix products, and we’ll walk you through the trade-offs between open-cell, closed-cell, and traditional blown-in without pushing one brand. The written quote comes after we talk through your options, not before.
Written by Bryce Holloway, Owner, Alden Insulation Fresno at Alden Insulation Fresno, serving Fresno and nearby areas.