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 throughout Pomona, and most jobs are completed in a single visit. If rodents have gotten into your Demilec-insulated attic, you’re looking at a cleanout, sanitizing, and exclusion work that typically runs $1,200 to $3,800 depending on attic size and the extent of the damage. We’re a licensed and insured contractor that’s been working in Pomona attics since 2011, and a live person answers our phones 24/7 at (626) 341-0830.

Call (626) 341-0830

This page is for Pomona homeowners whose attics have Demilec spray foam or injection foam insulation and who’ve noticed scratching sounds, droppings, stains, or that stale attic smell drifting into the house. If that’s you, keep reading. We’re going to walk through exactly how Demilec products fail under rodent pressure, what we do about it, and what it costs.

Key Takeaways

• Demilec spray foam is excellent insulation, but rodents excavate it the same way they’d burrow through fiberglass or cellulose.
• Rodent-proofing a Demilec attic requires specific sequencing: exclusion first, then decontamination, then foam repair, in that order.
• Most Pomona Demilec attic jobs run $1,200 to $3,800, with larger or heavily damaged attics landing closer to $5,000.
• We’re independent - not a Demilec authorized contractor - which means we make repair decisions based on what’s best for your attic, not what the warranty department prefers.
• Neil Ashford and our Pomona crews have been doing this since 2011, and every job carries our 90-Day Done Right Promise.

How Demilec Products Fail - and How We Fix Them

Demilec makes two foam families you’ll find in Pomona attics: the Sealection line (open-cell and closed-cell spray foam) and Heatlok (closed-cell, high-R-value foam), along with their newer Apina injection foam. Each has its own failure profile when rodents move in, and we’ve seen them all in Pomona homes ranging from mid-century ranches off Holt Avenue to newer builds near Pomona Valley Hospital.

• Sealection 500 (open-cell) gets burrowed first. Open-cell foam is soft enough that roof rats and mice can carve out nesting channels in a matter of nights. The foam doesn’t stop them; it just gives them a dark, quiet place to tunnel. Our fix starts with exclusion (sealing every entry point), then removing the damaged foam, sanitizing the area, and blowing in new insulation or re-foaming depending on what’s left.
• Heatlok HFO tunneled at the soffit line. We see this in Pomona attics on the north side of the house, where shaded soffit vents let rats in and the foam is dense enough that they chew along its surface rather than through it. The damage looks like a series of grooves with droppings pressed into them. We cut out the damaged sections, inspect the sheathing behind, and repair the foam.
• Apina injection foam leaves voids rats exploit. Apina is installed into existing wall and ceiling cavities, and if the installer didn’t fill the cavity edge to edge, rats will find the void space. We’ve opened up Pomona attic floors where Apina looked fine from above but had three-inch gaps behind it that were full of nesting material. We fill those voids properly and seal the perimeter.
• Foam bonded to rotted framing means more than a cleanout. Rodents urinate constantly, and a rat nest in a Demilec-insulated attic can soak sheathing with urine. The foam holds moisture against the wood, and we sometimes find decking that’s started to rot under the foam. That changes the job from clean-and-proof to attic restoration: remove the foam, replace bad decking, sanitize, and rebuild.
• Wiring chewed behind the foam. We’ve done Demilec attic jobs in Pomona where the homeowner had no idea rodents had stripped the insulation off wiring because the foam hid the damage. That’s a fire risk, not just an energy issue. Part of our process on any Demilec rodent job is a wiring inspection once the foam is pulled back.

Our Demilec Attic Cleaning & Rodent Proofing Process

Here’s how a typical Demilec attic job runs with us in Pomona, step by step:

1. 1
   Call and diagnosis. You call (626) 341-0830. A live person answers. We schedule a walkthrough, usually within a few days. Neil or a senior tech inspects the attic, identifies the Demilec product, maps the rodent activity, and gives you a written quote before any work starts.
2. 2
   Exclusion first. We seal every entry point: soffit gaps, roof intersections, gable vents, plumbing stacks, and any hole bigger than a dime. If rodents can get back in, cleaning is pointless.
3. 3
   Cleanout and removal. We remove contaminated insulation, nesting material, droppings, and damaged Demilec foam. This is full PPE work: respirators, gloves, Tyvek. Rodent waste in an attic is a hantavirus vector, and we treat it that way.
4. 4
   Sanitizing and decontamination. We fog and treat the attic with a hospital-grade antimicrobial, targeting the surfaces where urine and droppings were present. This kills bacteria and removes the scent markers that draw new rodents in.
5. 5
   Foam repair or replacement. We repair the Demilec foam if it’s salvageable, or remove and replace it with the right product for the space. If you want to stay in the Demilec family, we can. If another material makes more sense for your Pomona attic, we’ll tell you straight and explain the price difference.
6. 6
   Final inspection and guarantee. We walk the attic with you, show you the exclusion points, and explain what we did. Every job carries our 90-Day Done Right Promise. If it’s not right, we come back and make it right.

What Demilec Attic Cleaning & Rodent Proofing Costs in Pomona

Here’s what we honestly see in Pomona for Demilec attic work:

What moves the price: attic size, how long rodents have been active, how much Demilec foam was damaged, whether decking needs replacement, and access. A tight Pomona bungalow attic with a 4/12 pitch and three feet of headroom costs less to work in than a steep 8/12 with tight corners. Estimates are free, and with our $50 Off Any Repair Over $250 offer, the cleanup part of the job just got less expensive. Call (626) 341-0830 and we’ll give you a real number.

Why Pomona Homeowners Call Warmline Insulation Co. for Demilec Work

We’ve been in Pomona attics since 2011, and the reason homeowners keep calling us for Demilec-specific work comes down to a few things. First, our technicians are background-checked and uniformed, so the person in your attic is someone you can feel good about having in your home. Second, we know Demilec products well enough to repair what’s salvageable and replace what isn’t, and we’ll give you an honest answer on which is the better move. We also work across other insulation systems, including Reflectix radiant barrier work, so if your attic needs more than Demilec repair, we handle it without bouncing you to another contractor.

And we put our 90-Day Done Right Promise in writing. If the work isn’t right, we make it right. That’s the whole point of calling a specialist rather than a handyman. Comfortable homes don’t happen by accident - they’re built decision by decision, and we help you make the right ones.

FAQs