Demilec Attic Cleaning & Rodent Proofing in Canyon Lake: What to Know First
We provide independent Demilec attic cleaning & rodent proofing in Canyon Lake, typically completing most jobs in one to two days with a written price delivered before any work starts. Most Demilec attic cleanouts and rodent exclusion projects in the Canyon Lake market run between $1,800 and $4,200 depending on contamination level, accessibility, and whether the Demilec insulation system needs partial removal. This page is for homeowners who’ve found rodent activity, nesting material, or degraded Demilec product in their attic and need a crew that understands how Demilec’s open-cell and closed-cell formulations behave differently during cleanup and reinstallation. Call (737) 227-6219 for a free estimate with a written scope.
How Demilec Products Fail - and How We Fix Them
- Demilec Heatlok HFO Pro yellowing and odor retention in Canyon Lake’s high-humidity summers. The HFO blowing agent in this closed-cell series can trap organic compounds when rodents nest directly against the foam surface, creating a persistent ammonia smell that standard cleaning won’t touch. We remove the contaminated Heatlok sections, treat the substrate with an enzyme-based decontaminant, and reinstall with fresh material matched to the original density.
- Demilec Sealection 500 open-cell sagging in rafter bays after prolonged rodent traffic. Rodents compress and tear the 0.5 lb/ft³ open-cell structure, which then sags away from the deck and creates convection channels. We strip the damaged Sealection, verify the rafter bays are dry (Canyon Lake’s spring storms often drive moisture through ridge-vent gaps), and reinstall at proper thickness with mechanical fastening at the leading edge.
- Demilec Heatlok XT rigid board edge degradation where rodents chew for nesting material. The XT series’ higher density makes it attractive for gnawing; rodents leave granular debris that contaminates the entire cavity. We cut back to sound foam, inspect for urine saturation in the surrounding substrate, and replace with new XT bonded at the perimeter to eliminate seams.
- Demilec Agribalance open-cell dusting and particle shedding after attic cleanout disturbance. Agribalance’s plant-based polyols can become friable when dried rodent waste is scraped away during cleaning. We use HEPA-contained removal, apply a compatible stabilizing primer to the remaining Agribalance surface, and only then proceed with sanitizing.
- Demilec closed-cell delamination from roof decking in south-facing Canyon Lake attics. Thermal cycling on Cranes Mill Road corridor homes pushes the interface beyond the foam’s adhesion limits, especially where rodents have compromised the thermal boundary. We remove the delaminated sections, recondition the deck with a moisture-meter-verified dry surface, and reinstall with a primer specific to Demilec’s formulation chemistry.
Our Demilec Attic Cleaning & Rodent Proofing Process

- 1
Inspection with photo documentation. We enter the attic, identify the Demilec product line and series, map contamination zones, and photograph every compromised area. You get these photos before we quote.
- 2
Written price and scope. Under Haven Standard Clause 1, we deliver a flat price, written scope, and written warranty before anyone lifts a tool. No work starts without it.
- 3
Contained removal of contaminated material. We HEPA-vacuum rodent waste, nesting material, and degraded Demilec product using negative-air containment. OEM-spec Demilec or quality aftermarket replacement material is staged before we begin.
- 4
Substrate sanitizing and structural repair. Enzyme decontamination for urine-affected decking, replacement of chewed wiring or ductwork (we coordinate with licensed trades), and verification with a moisture meter that the cavity is dry enough for reinstallation.
- 5
Reinstallation and air-sealing verification. New Demilec or compatible material installed to original specification. On applicable jobs, we run a blower-door test - a pressurization reading that shows, in one number, how much conditioned air your building envelope is losing - and provide the pre- and post-install report.
- 6
Documented Photo Record and 365-Day Done Right Promise. You receive a complete photo record of the finished work, plus our written warranty. If it’s not done right, we make it right.
Before
AfterWhat Demilec Attic Cleaning & Rodent Proofing Costs in Canyon Lake
| Scenario | Typical Range |
|---|---|
| Light cleanout with spot rodent exclusion, Demilec intact | $1,800 - $2,600 |
| Moderate contamination with partial Demilec removal/replacement | $2,800 - $3,800 |
| Heavy contamination, full Demilec strip, sanitizing, reinstallation | $3,600 - $4,800 |
| Add-on: blower-door test with written report | $350 - $450 |
What moves the price: attic square footage, depth of contamination, whether the Demilec is open-cell (easier to remove) or closed-cell (denser, more labor), and accessibility - Canyon Lake’s steeper roof pitches on lake-view homes add time. Call (737) 227-6219 for an exact quote. Estimates are free, and we provide a Free Second Opinion on any written estimate you’ve already received.
Why Canyon Lake Homeowners Call Topside Attic Insulation Canyon Lake for Demilec Work

We’ve serviced Demilec systems in Canyon Lake long enough to know that Heatlok HFO Pro and Sealection 500 behave differently in our climate than they do in drier zones north of I-10. Wes Okafor runs a blower-door test before a single bag of material goes in, because a number without context is just noise. Our 365-Day Done Right Promise applies to every job, backed by a written scope and warranty delivered upfront. We also service Reflectix and other major brands, so we’re not locked into one manufacturer’s product line when your attic needs a different solution. Background-checked, uniformed technicians. Calls answered by a live person, 24/7. Seal the leaks first. Then insulate. The report tells you whether it worked.
FAQs
No - if the work is performed by qualified technicians using Demilec-compatible materials and methods. As an independent Demilec service provider, we document every step with photos and material batch numbers so any future warranty claim has a clear chain of custody. Call (737) 227-6219 if you need help interpreting your original warranty documents.
Most jobs finish in one to two days. A light cleanout with intact Demilec and minor exclusion work often wraps in a single day; heavy contamination requiring full removal and reinstallation typically needs two. We don’t rush the drying verification step - Canyon Lake humidity in summer can hold moisture in roof decking for 48 hours after a storm.
Repair when the damage is localized and the remaining foam is still bonded to substrate with no odor retention. Replace when contamination has penetrated multiple cavities, when closed-cell sections have delaminated, or when the original installation density no longer meets current code. We assess both paths and quote each honestly.
We source OEM Demilec material when the project calls for exact density and formulation matching, particularly for Heatlok XT and HFO Pro series. For some open-cell repairs, we use quality aftermarket alternatives from Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, and GreenFiber - never proprietary lock-in, always disclosed in your written scope.
We typically schedule inspections within 48 hours, with emergency response for active rodent infestations that have compromised your thermal boundary. A live person answers calls 24/7 - no voicemail loops, no callback windows measured in business days. Call (737) 227-6219 to book.
Written by Wes Okafor, Owner & Lead Insulation Technician, Topside Attic Insulation Canyon Lake at Topside Attic Insulation Canyon Lake, serving Canyon Lake and nearby areas.