Demilec Attic Cleaning & Rodent Proofing in Pasadena: What to Know First
Demilec attic cleaning and rodent proofing in Pasadena typically runs $1,200 to $3,800 depending on how much debris has to come out and how many entry points need sealing. Most jobs are done in one to two days, and we’ve been doing them since 2000. If you own a home with Demilec spray foam insulation and you’re hearing scratching overhead or noticing droppings in the eaves, this page is for you. Call (626) 606-2964 and a live person answers, day or night.
We’re Walt’s Insulation, an independent Demilec service provider. That means we don’t work for Demilec and we’re not authorized by them. What we are is a locally owned Pasadena crew that has pulled more rodents out of spray foam attics than we care to count. Whether you have Demilec’s Heatlok HFO, Sealection 500, or an older open-cell pour, we know how rats and squirrels damage it, how to clean it safely, and how to keep them from coming back.
How Demilec Products Fail - and How We Fix Them
- Heatlok HFO closed-cell foam gets gnawed at eaves and soffit joints. Rats in Pasadena love the soft edge where Demilec’s closed-cell foam meets the roof deck. They chew tunnels into the foam itself, not just through it. The fix is cutting back the damaged foam, treating the cavity, and re-foaming with a compatible closed-cell product before sealing the exterior gap with steel mesh and hardware cloth. Patching with canned foam from the hardware store won’t hold up; we see that fail within months.
- Sealection 500 open-cell foam absorbs rodent urine and odor. Open-cell Demilec soaks up moisture, including rat and squirrel urine. Once that happens, the smell never airs out on its own. The foam has to be cut out in the affected area, the framing treated with an enzyme cleaner, and new foam applied. Bleach doesn’t work here, and it can corrode wiring. We’ve handled this in homes from Bungalow Heaven to Hastings Ranch.
- Demilec open-cell pour foam settles and leaves gaps at the attic floor. In older Pasadena homes where Demilec was poured into the attic floor decades ago, the foam shrinks and pulls away from joists. Rodents exploit those channels as highways through the attic. We pull the loose or settled foam, inspect the deck below, and re-insulate properly. This is one of the most common things we find in century-old houses near the Rose Bowl.
- Rodents nest inside Demilec foam near heat sources. Attics with recessed light cans and older non-IC-rated fixtures get warm spots in the foam. Rats and mice dig into the soft Demilec right next to those warm zones. We remove the contaminated foam, verify the fixture is safe, and rebuild the area with the right air gap. We won’t bury a heat source in foam, period.
- Squirrels chew through Demilec air-seal kits around pipes and vents. The foam used to seal plumbing penetrations and exhaust vents gets chewed away by squirrels working their way in from the roof. The entry point is small, but the damage inside can be extensive. We pull the vent, clear the foam, re-flash the opening, and re-seal with a metal collar plus fresh Demilec-compatible foam. A foam-only repair is an invitation to get chewed out again.
Our Demilec Attic Cleaning & Rodent Proofing Process
Here’s how a Demilec job runs from the first call to the final walkthrough:
- 1
Live call and quick triage. You call (626) 606-2964, a person picks up, and we ask the right questions: what you’re hearing, when it started, what type of insulation you think you have. We schedule a visit with no trip charge inside our service county.
- 2
Attic inspection and entry-point mapping. Our uniformed technician gets into the attic, checks the Demilec foam condition, and traces every rodent pathway. We go up on the roof if needed. You get a clear explanation of what we found, not a vague “we’ll handle it.”
- 3
Contaminated foam removal. We cut out urine-soaked, feces-loaded, or gnawed Demilec foam and bag it for disposal. We wear proper respirators and gloves. Rodent droppings in attics carry hantavirus, and this is not a job we do halfway.
- 4
Sanitizing and decontamination. We treat the exposed framing and decking with an enzyme-based cleaner, not a scented spray. The goal is to kill the odor and the pathogens, not mask them.
- 5
Rodent exclusion and re-foaming. Every entry point gets sealed with steel mesh, hardware cloth, or metal flashing, depending on the spot. Then we re-apply Demilec-compatible foam to restore the insulation value and the air seal.
- 6
Cleanup and the Done Right Promise. We vacuum the work area, haul off the old foam, and leave your attic cleaner than we found it. Every job is backed by our lifetime workmanship guarantee. If it’s not done right, we make it right.
What Demilec Attic Cleaning & Rodent Proofing Costs in Pasadena
Here are honest numbers for typical Demilec attic jobs in Pasadena:
| Job Scope | Typical Range |
|---|---|
| Basic attic cleanout, no major foam replacement | $1,200 – $1,800 |
| Attic sanitizing and decontamination with enzyme treatment | $700 – $1,400 (added to cleanout) |
| Rodent exclusion with steel mesh on standard entry points | $800 – $1,600 |
| Full Demilec foam removal and replacement in a 1,200 sq ft attic | $3,500 – $6,500 |
| Targeted foam repair around 2-3 chewed penetrations | $400 – $900 |
What moves the price? Attic access difficulty, how much foam is contaminated, how high and steep the roof is, and how many entry points the rodents have been using. You’ll get a written quote before any work starts, with no surprises after. We also offer $40 off any repair over $200, a free second opinion on any written estimate, and a permanent 10% discount for seniors and veterans. Call (626) 606-2964 for an exact number.
Why Pasadena Homeowners Call Walt’s Insulation for Demilec Work
We answer the phone live because your house doesn’t keep business hours - and neither do we. Walt Brenner started this company in 2000, and he’s still the one making sure every Demilec job leaves the house better than we found it. The one down the road isn’t a slogan; our address and license number are published, and you can find us. We’re not a franchise and not a call center.
Our technicians are background-checked and uniformed, so you know exactly who’s walking into your house. And because we work with Demilec, Owens Corning, Rockwool, Icynene, Johns Manville, CertainTeed, Knauf, GreenFiber, and Reflectix, we’re not married to any one product. If a Demilec repair isn’t the smartest way to spend your money, we’ll tell you that. The Done Right Promise covers every job for life. That’s not marketing; it’s how we’ve stayed busy in Pasadena for 25 years.
FAQs
Yes, in most cases we remove only the foam that’s been contaminated by urine, droppings, or chewing, then sanitize the surrounding area. Full foam removal is only necessary when contamination is widespread or the foam has pulled away from the framing. Call (626) 606-2964 and we’ll tell you which situation you’re in after an inspection.
It can. Demilec’s manufacturer warranties typically cover material defects, not pest damage, but the real issue is that damaged foam stops performing and the attic leaks air. Our repairs restore the air seal and insulation value, and our own lifetime workmanship guarantee covers our labor regardless of what the manufacturer says.
Most inspections happen within 24 to 48 hours, and emergency calls get same-day or next-day visits. The scratching in the attic doesn’t pause on weekends, so neither do we. Call (626) 606-2964 and we’ll put you on the schedule directly.
Targeted repair is almost always cheaper if the damage is confined to a few entry points and nesting areas. If the rodents have traveled through open-cell foam across the entire attic, full removal and re-insulation can actually be the better long-term value. We’ll quote both options honestly and recommend the one we’d pick for our own house.
We focus on residential attics in Pasadena and the surrounding areas, including townhomes and condos with Demilec spray foam. If you have a commercial property, give us a call anyway, and we’ll point you in the right direction if we can’t take the job.
Written by Walt Brenner, Owner, Walt’s Insulation at Walt’s Insulation, serving Pasadena and nearby areas.