Demilec Attic Cleaning & Rodent Proofing Nationwide | Walt’s Insulation

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

If you own a West Hollywood home with Demilec spray foam or injection foam in the attic, and you’ve got rodents, droppings, or years of dust and debris up there, here’s the straight answer: we clean it out, sanitize it, seal every entry point, and restore the attic to a condition you’d actually want to look at. Most Demilec attic jobs in West Hollywood take one to two days, and pricing runs from roughly $1,200 for a basic cleanout to $5,000+ when we’re replacing chewed-through foam and rebuilding the rodent barrier. Call us at (213) 527-4062 and a live person answers, day or night. This page is for Demilec owners in West Hollywood who want the job done right the first time, not patched over.

Call (213) 527-4062

As an independent Demilec service provider, we’re not a factory warranty depot and we don’t pretend to be. We’re the crew that shows up when the warranty paperwork is long gone and the problem is still there.

How Demilec Products Fail - and How We Fix Them

Demilec makes solid foam products, but in West Hollywood attics they face a specific set of problems. Heat, rats, and time. Here’s what we actually see when we open up a Demilec attic in this city:

• Heat Master and Heatlok HFO rodent tunneling. Closed-cell foams like Demilec’s Heatlok HFO line cure hard, but rats and roof rats chew through them anyway, carving tunnels right along the roofline. We find these channels, cut back the damaged foam, and replace it before sealing the entry point. Just spraying over a tunnel doesn’t fix the highway the rodents built.
• Sealection 500 open-cell saturation. Open-cell foams like Sealection 500 absorb moisture and, worse, hold the ammonia smell of rodent urine. You can’t mask that smell. We cut out saturated sections, treat the decking underneath, and reapply compatible foam so the R-value comes back with the fresh air.
• Air leakage at foam-to-framing joints. Demilec foam shrinks slightly as it cures, especially in West Hollywood attics that hit 140 degrees in August. The gap between foam and rafter might only be an eighth of an inch, but that’s enough for attic dust to stream through and for rodents to gnaw an opening. We inspect every joint line with a thermal camera before we do anything else.
• Demilec Agribalance displacement from pest activity. When rodents nest in attics with Demilec’s Agribalance open-cell foam, they shred the foam into nesting material and scatter it. Owners don’t just need foam restored; they need a full contaminant removal. We vacuum, sanitize, and rebuild the insulation layer so the attic isn’t a biohazard anymore.
• Failed rodent exclusion around roof penetrations. Most West Hollywood attics we see have entry points at plumbing vents, recessed lights, or where the fascia meets the roofline. Rodents don’t chew through foam first; they find the gap and then chew through the foam behind it. Our rodent proofing starts at the outside, not the inside.

Our Demilec Attic Cleaning & Rodent Proofing Process

Here’s what a real Demilec attic job looks like when you call Walt’s Insulation in West Hollywood. No mystery, no upselling, no crew that disappears after lunch.

1. 1
   Walkthrough and honest assessment. We inspect the attic floor, the foam lines, the roofline, and the exterior. You get plain talk about what we found, not a scare tactic. If the attic just needs cleaning and sealing, that’s what we tell you.
2. 2
   Containment and removal. We set up containment so nothing drifts into your living space, then vacuum out droppings, loose debris, shredded foam, and any nesting material. Full HEPA filtration, because attic dust in West Hollywood homes with older construction often has things in it you don’t want to breathe.
3. 3
   Sanitizing and decontamination. We treat the decking, framing, and any remaining foam with a hospital-grade antimicrobial treatment. This is where the smell actually goes away, not just gets covered up.
4. 4
   Rodent proofing and exclusion. We seal every gap we found, from quarter-inch wall penetrations to roofline gaps, using steel mesh, hardware cloth, and sealant that rodents can’t chew through. The goal is simple: they don’t get back in.
5. 5
   Foam repair and replacement. Damaged Demilec foam gets cut back to solid material and replaced. We match the foam type to what’s there, open-cell to open-cell, closed-cell to closed-cell, so you don’t end up with a condensation point between mismatched layers.
6. 6
   Final walkthrough and guarantee. We show you the work, explain what we sealed, and back it with our Done Right Promise. If it’s not done right, we make it right. That’s not a slogan. That’s the lifetime workmanship guarantee we’ve stood behind since 2000.

What Demilec Attic Cleaning & Rodent Proofing Costs in West Hollywood

Here’s real pricing for Demilec attic work in West Hollywood, based on what we’ve charged for jobs across the city, from the condos near Santa Monica Boulevard to the hillside homes off Doheny:

• Attic cleanout only (no rodents): $900 to $1,500 depending on attic size and debris volume. Includes HEPA vacuuming and light deodorizing.
• Full rodent decontamination and sanitizing: $1,500 to $3,200. This is the big one; it includes dropping removal, foam removal where contaminated, antimicrobial treatment, and odor neutralization.
• Rodent proofing and exclusion (whole attic): $800 to $2,000 depending on house size and how many entry points we find. Most West Hollywood homes have three to six active gaps.
• Demilec foam repair after rodent damage: $500 to $3,500. A small tunnel patch is different from rebuilding a 20-foot soffit line.
• Full attic restoration (clean + sanitize + proof + foam replacement): $3,500 to $7,000 for typical West Hollywood attics, with older buildings near the Santa Monica Boulevard corridor often running higher because of tight access and years of layered insulation.

What moves the price most is how much foam we have to cut out and how many entry points we find. We give upfront pricing before any work starts, and the estimate we give is the price you pay. Call (213) 527-4062 for a free estimate, and remember: no trip charge inside our service county, and seniors and veterans always get 10% off.

Why West Hollywood Homeowners Call Walt’s Insulation for Demilec Work

We’re the one down the road, not an 800 number. Walt Brenner started this company in 2000, and he and his crew have been working in West Hollywood long enough to know the difference between a condo attic off Holloway and a hillside house off Sunset Plaza. The phone rings and a real person answers, 24/7, because we figure if you’re calling about your attic, you deserve to talk to someone who actually knows what they’re doing. Our technicians are background-checked and uniformed, and every Demilec job is backed by the Done Right Promise: if it’s not done right, we make it right, no runaround. We work with Demilec foam lines regularly, and when a job calls for a different approach, we’ve also serviced Reflectix radiant barrier products in West Hollywood attics, so we’re not brand-blind. Walt has been diagnosing air sealing problems that other contractors walk right past since before half the buildings on Santa Monica Boulevard had their current facades. We do the job right the first time, because coming back to fix it isn’t good for either of us.

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