Demilec Attic Cleaning & Rodent Proofing Nationwide

Demilec Attic Cleaning & Rodent Proofing in Pomona: What to Know First

We provide independent Demilec attic cleaning and rodent proofing in Pomona, typically completing most jobs within one to two days after our initial assessment. Most Demilec attic restorations in the Pomona Valley run between $1,800 and $4,200 depending on contamination level and whether the Demilec insulation layer can be salvaged or must be removed. We give you a written price before any work starts - no exceptions - and every job ends with a Documented Photo Record showing what we found and what we did.

Call (562) 242-7569

This page is for Pomona homeowners who have Demilec spray foam or insulation in their attic and are dealing with rodent damage, nesting, or contamination. Whether you’re near Ganesha Park, north of the 10, or in the older ranch stock south of Mission Boulevard, the combination of Demilec’s particular foam characteristics and Pomona’s dry, hot-summer climate creates specific problems we’ve handled hundreds of times. Call (562) 242-7569 for a free estimate and we’ll read your situation with you.

How Demilec Products Fail - and How We Fix Them

• Demilec Sealection 500 open-cell foam: rodent tunneling and urine saturation. The 0.5 lb/ft³ density of Sealection 500 is soft enough that roof rats and mice can excavate tunnels directly through it, especially in Pomona attics where summer attic temperatures exceed 140°F and drive rodents toward cooler conditioned spaces. We remove contaminated sections, treat the substrate with an enzyme decontaminant, then reinstall with a rigid-foam baffle or dense-pack cellulose barrier that rodents cannot penetrate.
• Demilec Heatlok HFO High Lift: thermal drift and off-gassing after rodent damage. Heatlok’s HFO blowing agent can shift chemistry when the foam is torn open and exposed to attic dust and rodent waste, producing a sweet, chemical odor that homeowners mistake for a gas leak. We core-sample the damaged areas, remove anything showing thermal drift or discoloration, and replace with fresh Heatlok only after sealing all entry points - otherwise the rodents return and repeat the damage.
• Demilec 500 wall foam extended into attic kneewalls: compression and air gap creation. Contractors in the 2015-2019 code cycle often sprayed Sealection 500 into attic kneewalls as a quick R-value fix, but the foam shrinks 2-3% over time and creates gaps at the top plate where rodents enter and conditioned air escapes. We strip the failing foam, air-seal the top plates with acoustical sealant and rigid blocking, then reinstall with a material suited to the application - often Rockwool or dense-pack cellulose in kneewalls, not spray foam.
• Demilec open-cell in unvented conditioned attics: moisture accumulation behind rodent nests. When rodents nest against open-cell Demilec in a conditioned attic, their body heat and respiration create localized condensation on the foam surface, which can support mold growth on the OSB or drywall substrate. We remove the nest and contaminated foam, treat the sheathing with an antimicrobial, and install a vapor-smart barrier - often a smart membrane or closed-cell flash coat - before restoring the thermal layer.
• Demilec foam around can lights and chases: rodent highways into living space. Demilec sprayed around recessed can lights and HVAC chases in Pomona’s 1960s-1980s housing stock often lacks a proper ignition barrier and gets gnawed back by rodents seeking pathways. We cut back the damaged foam, install fire-rated covers or tenmat enclosures, seal with firestop caulk, then restore the thermal and ignition barriers to code.

Our Demilec Attic Cleaning & Rodent Proofing Process

1. 1
   Assessment and blower-door baseline. We run a blower-door test - a pressurization reading that shows, in one number, how much air your building envelope is losing - and document the attic with thermal imaging. Wes Okafor reviews every Demilec job personally before the crew books it.
2. 2
   Written price and scope. You get a flat price, written scope, and written warranty before anyone lifts a tool. Haven Standard Clause 1: no work starts without it.
3. 3
   Entry-point exclusion and rodent removal. We seal all active and potential entry points with copper mesh, flashing, and concrete where needed, then trap and remove remaining rodents. No poison - dead rats in Demilec foam are worse than live ones.
4. 4
   Contaminated material removal and decontamination. We HEPA-vacuum all droppings, remove saturated or tunneled Demilec foam, and treat wood substrates with an enzyme-based decontaminant that breaks down urine proteins and pheromones that attract new rodents.
5. 5
   Air sealing and restoration. We seal top plates, penetrations, and bypasses with appropriate materials, then restore the thermal layer - sometimes new Demilec, sometimes a different material if the application was wrong to begin with. Before-and-after blower-door numbers are published on every job so you can verify the air-sealing result.
6. 6
   Documented Photo Record and 365-Day Done Right Promise. You receive photos of every stage, the blower-door comparison, and a written completion certificate. If it’s not done right, we make it right.

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After

What Demilec Attic Cleaning & Rodent Proofing Costs in Pomona

What moves the price: how far rodents penetrated the Demilec layer, whether the substrate is damaged, accessibility of the attic (steep pitches near Ganesha Park add labor), and whether we find code-violation conditions from the original install that must be corrected. We also service Reflectix radiant barrier systems when they’re part of the same attic assembly. Call (562) 242-7569 for an exact quote - estimates are free, and we offer a Free Second Opinion on any written estimate you’ve already received.

Why Pomona Homeowners Call Topside Attic Insulation Pomona for Demilec Work

We’ve sealed and insulated 9,000+ homes since 2016, and a significant share of our Pomona attic work involves Demilec foam that was installed during the 2015-2019 Title 24 code push. We know the difference between Sealection 500 and Heatlok HFO in practice, not just on the data sheet, and we won’t sell you new Demilec if the original application was the wrong choice for your attic.

Our technicians are background-checked and uniformed, and a live person answers calls 24/7 - no voicemail loops. The 365-Day Done Right Promise applies to all completed work, and every job closes with a Documented Photo Record, not a handshake and a hope. As an independent Demilec service provider, we have no manufacturer obligation to push product; we use what’s right for the assembly, sourced from Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber.

Seal the leaks first. The insulation is just the last layer of the answer.

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