Demilec Insulation Removal & Replacement Nationwide

Demilec Insulation Removal & Replacement in Los Angeles: What to Know First

We provide independent Demilec insulation removal and replacement throughout Los Angeles, with most attic jobs completed in one to two days and a written price delivered before any work starts. As an independent Demilec service provider, we are not affiliated with or authorized by Demilec, but we stock the product lines and removal protocols specific to their formulations. Most homeowners who call us are dealing with failed open-cell spray foam in vented attics, contaminated insulation after rodent activity, or legacy Demilec Heatlok HFO installations that have shrunk or separated from framing in Los Angeles’s dry heat cycles. Call (628) 226-1097 for a free estimate with a written scope.

Call (628) 226-1097

How Demilec Products Fail - and How We Fix Them

• Heatlok HFO shrinkage in unvented assemblies. Demilec’s Heatlok HFO series, common in Los Angeles net-zero retrofits from 2018-2022, can pull away from roof deck joints when subjected to repeated Santa Ana heat spikes above 95°F combined with seasonal humidity dips below 15%. We remove the separated foam mechanically, verify the substrate moisture content with a pin meter, then re-apply only after confirming the assembly can support a vapor-closed system - or convert to a vented approach with breathable insulation if it cannot.
• Demilec 500 open-cell water retention in coastal zones. In Pacific Palisades and Marina del Rey jobs, we’ve pulled saturated Demilec 500 open-cell foam that trapped roof leaks against sheathing because the hygroscopic structure wicked water laterally rather than shedding it. Our fix: full removal to substrate, infrared mapping to find the leak source, repair, drying verification with a moisture meter, then replacement with a closed-cell formulation or a vented assembly with proper drainage plane.
• Heatlok XT off-gassing in conditioned attics with undersized HVAC. When Los Angeles homeowners converted attics to living space and sized mini-splits for the load but not the ventilation, residual amine off-gassing from Heatlok XT - detectable as a sharp, chemical odor - persisted beyond the normal 72-hour cure window. We remove the affected lift, flush the cavity with forced air, and reinstall only after confirming 0.35 ACH mechanical ventilation or switching to a lower-VOC alternative.
• Rodent contamination in Demilec-insulated assemblies. Demilec’s textured open-cell surfaces in Eagle Rock and Highland Park attics provide nesting purchase that slick fiberglass batts do not. We remove foam and fecal matter per CDPH guidelines, HEPA-vacuum to bare wood, apply enzyme treatment, then reinstall with rodent-proofed access and physical barriers - not just new foam over old habits.
• Demilec SEALECTION 500 density failures from overspray in tight cavities. In older Los Angeles bungalows with 2×4 rafters, contractors sometimes sprayed SEALECTION 500 past yield to fill a cavity, resulting in density variations that crack during thermal cycling. We cut out the failed lifts with reciprocating saws and wire brushes, measure the true cavity depth, and reinstall to specified density - 0.5 lb/ft³ for open-cell - with documented lift thickness on the photo record.

Our Demilec Insulation Removal & Replacement Process

1. 1
   Call intake and scheduling. A live person answers, notes the Demilec product line if known, and schedules a site visit. We request any original installation documentation you have.
2. 2
   On-site diagnostic with blower-door test. We run a blower-door test - a pressurization reading that shows, in one number, how much air your building envelope is losing - and infrared scan to map failure boundaries before touching material.
3. 3
   Written scope and price. You receive a flat price, written scope, and written warranty before anyone lifts a tool. Haven Standard Clause 1, no exceptions.
4. 4
   Mechanical removal and substrate prep. We remove failed Demilec foam with specialized cutting tools and HEPA containment, then prep the substrate per manufacturer guidelines for reinstallation or conversion to an alternative system.
5. 5
   Reinstallation and post-test documentation. New insulation goes in, we run the blower-door again, and you get the before-and-after CFM50 numbers, installed R-value, product data sheets, and a Documented Photo Record.
6. 6
   365-Day Done Right Promise activation. The written warranty takes effect; if it’s not done right, we make it right.

Before

After

What Demilec Insulation Removal & Replacement Costs in Los Angeles

Most attic insulation jobs in a Los Angeles home this size run between $4,200 and $7,800 for full removal and replacement. We also provide a Free Second Opinion on any written estimate - bring us a competing quote and we will read it with you. Call (628) 226-1097 for an exact quote; estimates are free.

Why Los Angeles Homeowners Call Topside Attic Insulation Los Angeles for Demilec Work

We’ve sealed and insulated over 9,000 homes since 2016, and the ones with Demilec products require a specific removal protocol - mechanical cutting, not solvent softening, to preserve substrate integrity. Our technicians are background-checked and uniformed; Wes Okafor trains every crew lead personally on Demilec’s density specifications and failure signatures. We also service Reflectix and other brands, so if your assembly needs a hybrid approach or a full conversion away from spray foam, we stock the materials and do not push proprietary lock-in. Every job ends with a Documented Photo Record and, on applicable work, before-and-after blower-door numbers you can verify yourself.

Seal the holes first. Then measure the R-value. In that order.

FAQs