Demilec Attic Cleaning & Rodent Proofing Nationwide

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

We provide independent Demilec attic cleaning & rodent proofing in West Hollywood, typically completing jobs in one to two days depending on contamination level and accessibility. Most Demilec systems in the area run between $1,800 and $4,200 for full cleanout, sanitizing, and rodent proofing - and you’ll get that number in writing before anyone enters your attic. This page is for homeowners with Demilec open-cell or closed-cell spray foam who’ve found droppings, nesting material, or compressed insulation that needs professional handling without voiding material warranties. Call (213) 306-2607 for a free estimate with written pricing.

Call (213) 306-2607

How Demilec Products Fail - and How We Fix Them

• Demilec Sealection 500 open-cell in older West Hollywood bungalows absorbs rodent urine and holds odor. The 0.5 lb/cu ft density wicks moisture rather than repelling it, so once rats or mice nest against it, the ammonia compounds penetrate the full depth. We remove the contaminated foam in controlled sections, HEPA-vacuum the substrate, and apply an enzyme-based decontaminant before reinstalling - never sealing over biological material.
• Demilec Heatlok Soya HFO closed-cell can delaminate from roof decking when rodents compress it for nesting. The 2.0 lb/cu ft rigid foam doesn’t rebound after sustained pressure, creating air gaps that defeat its R-6 per inch rating. We cut back to sound adhesion, re-foam with matching HFO chemistry, and verify with thermal imaging - not guesswork.
• Demilec Sealection Agribalance in vented attics collects organic debris at the surface. The bio-based content attracts insects that rodents then feed on, accelerating the contamination cycle. We surface-plane the top 1/2 inch, treat with a borax-based deterrent safe for the soy chemistry, and install physical barriers at eave and ridge vents.
• Demilec low-pressure one-component foam around penetration seals crumbles when rodents chew through. These touch-up applications weren’t designed for structural exclusion; they become entry highways. We remove the compromised foam entirely and replace with galvanized steel mesh backed by proper two-component foam - the fix lasts, the warranty stays intact.
• Demilec foam in West Hollywood’s Santa Monica Boulevard corridor attics degrades faster from UV exposure via gable vents. The coastal-inland thermal swing (40°F+ daily in spring) plus unfiltered sunlight photodegrades exposed foam surfaces, making them friable and easier for rodents to tunnel. We assess all vent screening, replace UV-damaged foam, and specify proper vent baffling as part of the restoration scope.

Our Demilec Attic Cleaning & Rodent Proofing Process

1. 1
   Attic assessment with photo documentation. We photograph every Demilec surface before touching anything - contamination pattern, foam condition, penetration points. You get this record.
2. 2
   Contamination testing and scope writing. We swab for pathogens, identify the foam series and depth, and write a flat price with material specifications. No work starts without your signature on the scope.
3. 3
   Controlled removal and HEPA containment. Contaminated Demilec comes out in bagged sections; airborne particulate is captured at 99.97% efficiency. We protect your HVAC from cross-contamination.
4. 4
   Substrate sanitizing and structural repair. Joists and decking get enzyme treatment; chewed wiring gets flagged for your electrician; we install steel exclusion mesh at all rodent entry paths.
5. 5
   Demilec-compatible reinstallation or alternative specification. We match existing chemistry where possible, or specify Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, or GreenFiber alternatives if the original product is discontinued or inappropriate for the corrected conditions.
6. 6
   Final documentation and 365-Day Done Right Promise. After photos, written scope completion checklist, and - where applicable - blower-door verification of the sealed envelope. Under Haven Standard: you leave with everything in writing.

Before

After

What Demilec Attic Cleaning & Rodent Proofing Costs in West Hollywood

What moves the price: square footage of foam affected, whether the attic is floored or blown-in over joists (access time differs enormously), and whether we find compromised electrical that requires coordination with a licensed electrician before we close the space. We also service Reflectix radiant barrier systems when they’re part of the same assembly.

Every estimate is free, every price is written before work starts, and we offer a Free Second Opinion on any written estimate you’ve already received - bring us their scope, we’ll read it with you.

Why West Hollywood Homeowners Call Topside Attic Insulation West Hollywood for Demilec Work

We’ve been inside attics from the Sunset Strip to Melrose, and the pattern is consistent: Demilec foam that’s been compromised by rodents won’t perform to spec until it’s properly cleaned and the entry paths are physically blocked. Wes Okafor and our crew don’t seal over contamination - we remove it, document the removal, and reinstall to the original thermal boundary. Our 365-Day Done Right Promise applies to every Demilec restoration, and our materials come from Demilec, Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, and GreenFiber - no lock-in to a single product line. Calls are answered by a live person 24/7, and our technicians are background-checked and uniformed. Seal the leaks first. Then insulate. The R-value on the bag assumes you did it in that order.

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