Demilec Attic Cleaning & Rodent Proofing in Irvine: What to Know First
Attic cleaning and rodent proofing for Demilec-insulated homes in Irvine typically runs $1,200-$3,800 depending on attic size, rodent damage extent, and whether the existing Demilec foam needs localized repair or full removal. Most jobs are completed in a single visit, and we’re an independent Demilec service provider - we work on the foam, not for the manufacturer. If you’re a Demilec owner in Irvine dealing with rodent activity, droppings, or the stale smell of a compromised attic, this page tells you exactly what we find, what we do, and what it’ll cost. Call (949) 832-7835 and a live person answers, any hour.
How Demilec Products Fail - and How We Fix Them
Demilec makes solid foam, but no attic product is rodent-proof by itself. In Irvine, where older Woodbridge and Turtle Rock homes often carry 1980s-era construction gaps alongside newer foam, we see the same failure patterns repeat. Here’s what we encounter on Demilec jobs:
- Demilec Heatlok HFO and rodent nesting tunnels. Heatlok HFO’s open-cell cousin and closed-cell formulations both get burrowed into by roof rats and mice. The foam’s structure gives rodents a warm, quiet place to tunnel, especially along soffit intersections. We excavate the damaged foam, sanitize the cavity, and re-foam before sealing entry points.
- Demilec Sealection 500 and moisture wicking from rodent urine. Sealection 500’s lower-density structure absorbs liquid faster than closed-cell lines. Once rats nest against it, urine saturates the foam and the odor doesn’t dissipate on its own. We cut out contaminated sections rather than attempting surface cleaning; anything less leaves the smell embedded.
- Demilec Polar Foam and chewed electrical wiring adjacent to it. Rodents don’t eat the foam - they chew through it to reach wiring insulation, which they do eat. We’ve pulled more gnawed Romex out of Irvine attics with Polar Foam than any other Demilec line. Our cleanup includes inspecting every accessible wire run near foam damage.
- Demilec Apex and failed rodent proofing from the original install. Apex is a solid closed-cell product, but if the original installer left gaps around plumbing vents, recessed light cans, or the attic hatch, rats find them. We map every penetration, seal with foam-compatible materials, and verify with a blower door test where needed.
- Demilec Heatlok Soya and dust-bonding from degraded foam surfaces. Heatlok Soya’s plant-based formulation can develop a tacky surface layer over years of Irvine heat cycling. That layer grabs dust, insulation fibers, and rodent dander. Full removal is sometimes the only answer, and we do it with HEPA-filtered extraction so the living space below stays clean.
Our Demilec Attic Cleaning & Rodent Proofing Process
Neil Ashford and the crew have worked these attics long enough to know that a rushed cleanup just invites the rats back. Here’s how a typical Demilec job runs from first call to final walkthrough:
- 1
Call and schedule. You reach a live person at (949) 832-7835. We ask about your attic’s history, Demilec foam type if you know it, and any current pest activity. Most Irvine appointments are scheduled within 48 hours.
- 2
Attic inspection and damage mapping. One of our background-checked, uniformed technicians walks the full attic. We photograph every entry point, foam damage area, and contamination zone. You get a written report before any work begins.
- 3
Removal and decontamination. Contaminated Demilec foam gets cut out and bagged. We HEPA-vacuum droppings, dust, and debris. Every surface gets treated with an antimicrobial that’s safe for the foam we’re leaving in place.
- 4
Rodent proofing and exclusion. We seal entry points at eaves, gable vents, pipe penetrations, and the attic hatch. Materials are chosen to work with Demilec foam chemistry - no caulk that’ll peel off closed-cell in two Irvine summers.
- 5
Foam repair or replacement. Damaged Demilec areas get re-foamed to match the existing system’s thermal performance. If you’re making changes, we’ll quote replacement with Demilec or an equivalent closed-cell line from our material partners, including Owens Corning and Icynene.
- 6
Final inspection against the 90-Day Done Right Promise. We walk the attic together. If anything’s not right within 90 days, we’re back to make it right. Written, not verbal.
What Demilec Attic Cleaning & Rodent Proofing Costs in Irvine
Straight numbers, because upfront pricing is how we’ve done business since 2011:
- Basic attic cleanout, no active infestation: $800-$1,400 for a typical Irvine 1,200-1,800 sq ft attic.
- Full decontamination with rodent proofing: $1,500-$2,800 depending on foam damage and entry point count.
- Demilec foam repair after rodent removal: $400-$1,200 for localized cavity re-foaming.
- Full Demilec removal and replacement: $2,500-$5,000+ for larger attics with extensive contamination.
What moves the price: attic square footage, how much Demilec foam needs cutting out, accessibility (steep pitches and tight trusses add labor), and whether wiring repair is required. We don’t pad quotes, and we’ll tell you honestly if a repair holds better value than full replacement. Estimates are free. There’s a 5% Senior & Veteran discount on every job, and $50 off any repair over $250.
Why Irvine Homeowners Call Warmline Insulation Co. for Demilec Work
We’ve been in Irvine attics since 2011, and we’ve worked on enough Demilec foam to know its quirks. Our technicians are background-checked and uniformed, so you always know who’s in your home. If the job exposes issues beyond the attic, we’re the contractor that handles it under one roof - air sealing, blown-in, radiant barrier, crawl space encapsulation, the full range. We also service Reflectix radiant barrier systems when a Demilec cleanup reveals degraded foil. Every job carries the 90-Day Done Right Promise: if it’s not done right, we make it right. Comfortable houses don’t happen by accident - they’re built that way on purpose.
FAQs
It depends on what caused the contamination and what the cleaning requires. Demilec warranties typically cover manufacturing defects, not rodent damage or deferred maintenance. As an independent Demilec service provider, we document everything and recommend repair approaches that preserve any remaining warranty where possible. If full foam removal is necessary, we’ll tell you before we start - no surprises.
Yes. We can re-foam with Demilec product or an equivalent closed-cell spray foam from our material partners. The match matters less for brand name and more for thermal performance and moisture behavior. We’ll spec the right density and thickness for your Irvine attic’s heat load, not just patch the hole and call it done.
Most Demilec cleaning and rodent proofing jobs in Irvine are scheduled within 48 hours of your call. Rodent infestations don’t improve with waiting, so we keep emergency slots open. Call (949) 832-7835 - a live person answers 24/7 and gets you on the schedule.
For minor rodent activity with limited contamination, cleaning and localized foam repair is almost always cheaper - typically $1,500-$2,800 versus $2,500 and up for full replacement. If urine saturation is widespread or the foam has degraded from years of Irvine attic heat, replacement often costs less over time than repeated cleanings. We’ll give you a straight recommendation either way. Call (949) 832-7835 for an exact quote - estimates are free.
We do both. Our rodent proofing and exclusion work seals the entry points so new rodents can’t get back in. For active infestations, we coordinate with licensed pest control to eliminate the animals while we handle the attic side. You don’t need to juggle trades - we manage the sequence so the job gets done right in one pass.
If your Demilec attic needs cleaning, proofing, or a full reset, call (949) 832-7835. We’ll talk through what you’re seeing, give you a straight answer on cost, and schedule a time that works. Free estimates, no pressure, and the 90-Day Done Right Promise on every job.
Written by Neil Ashford, Owner, Warmline Insulation Co. at Warmline Insulation Co., serving Irvine and nearby areas.