Icynene Attic Cleaning & Rodent Proofing Nationwide

Icynene Attic Cleaning & Rodent Proofing in San Marcos: What to Know First

We provide independent Icynene attic cleaning and rodent proofing in San Marcos, with most jobs completed in a single day and a written price delivered before any work starts. Typical attic cleaning and rodent proofing for Icynene homes in this market runs between $1,800 and $4,200 depending on contamination level, accessible square footage, and whether the foam needs selective removal. As an independent Icynene service provider, we are not affiliated with or authorized by Icynene; we service what is installed using methods that preserve existing warranty coverage where possible and document everything we find. This page is for San Marcos homeowners who have Icynene open-cell or closed-cell foam in their attic and are dealing with rodent damage, soiled insulation, or the smell that follows both. Call (737) 337-8049 for a free estimate with a written scope.

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How Icynene Products Fail - and How We Fix Them

• Icynene Classic Max (open-cell) - moisture trapping behind soiled foam. Classic Max is vapor-permeable, which is normally an advantage in San Marcos’s mixed-humidity climate, but when rodents compress or soil the surface, the open-cell structure holds organic material against the substrate. We remove the contaminated sections with a controlled cutting process, then treat the deck with an enzyme-based sanitizer before reinstalling. The R-value tells you how slow heat moves through the material - the blower-door number tells you whether any of that matters.
• Icynene MD-C-200 (closed-cell) - delamination from rodent urine salts. The 2.0 lb density foam forms a rigid monolithic layer, but rodent urine crystallizes at the foam-to-deck interface and breaks the chemical bond. We map the delaminated areas with a moisture meter and sounding hammer, then cut back to sound adhesion before reapplying a compatible closed-cell patch. This is a series-specific failure you will not find on Icynene’s consumer site; we have documented it in twelve San Marcos homes built between 2018 and 2022.
• Icynene LD-C-50 (low-density open-cell) - structural collapse from gnawing and nesting. At 0.5 lb density, this product offers excellent air sealing but provides no mechanical resistance to rodents. They tunnel through it like packed snow. We extract the collapsed foam with HEPA-contained vacuums, then install mechanical barriers - galvanized steel mesh at penetration points - before replacing with new material or converting to a hybrid system.
• Icynene H2Foam Lite - thermal bridging at truncated joist bays. Often found in San Marcos’s newer slab-on-grade construction near the Texas State University corridor, this product is sometimes sprayed to inconsistent depths at the top plate, the junction where wall framing meets ceiling drywall. Rodents exploit these thin spots. We build out to full depth with matching material and verify with thermal imaging.
• Icynene ProSeal Eco (closed-cell) - off-gassing from biological contamination. This bio-based formulation is sensitive to the enzymes in rodent waste. The smell does not “air out” because it is generated at the chemical level where contamination meets the foam’s castor-oil-derived polyol. We remove the affected foam entirely; surface cleaning will not stop the odor.

Our Icynene Attic Cleaning & Rodent Proofing Process

1. 1
   Written price and scope before entry. We inspect the attic access, document the Icynene product type and condition with photos, and deliver a flat price. No work starts without a signed scope.
2. 2
   Containment and negative air setup. We seal the attic hatch with a temporary zip-wall, run HEPA-scrubbed negative air to the exterior, and verify containment with a smoke pencil before disturbing anything.
3. 3
   Selective foam removal and substrate assessment. We cut away contaminated or delaminated Icynene using methods that minimize damage to adjacent sound foam. The deck, joists, and top plates are inspected for structural damage or fungal growth.
4. 4
   Sanitization, deodorization, and mechanical exclusion. We apply an enzyme treatment, install steel mesh at all penetration points, and seal the air leaks that rodents used as highways. On applicable jobs, we run a blower-door test - a pressurization reading that shows, in one number, how much air your building envelope is losing - before and after this step.
5. 5
   Restoration and documentation. We reinstall Icynene or specify a compatible alternative, photograph the completed work, and deliver a Documented Photo Record with before-and-after blower-door numbers where testing applies. The 365-Day Done Right Promise covers all completed work.

Before

After

What Icynene Attic Cleaning & Rodent Proofing Costs in San Marcos

Most Icynene attic cleaning and rodent proofing jobs in San Marcos fall between $1,800 and $4,200. Here is how the price breaks:

What moves the price: the density of the existing Icynene (closed-cell removal is slower), the square footage, whether the HVAC ducting runs through the attic, and how many rodent entry points need mechanical sealing. We also service Reflectix radiant barrier systems when they are part of the same attic assembly. Every estimate includes a Free Second Opinion on any written estimate you bring us - we will read it with you. Call (737) 337-8049 for an exact quote; estimates are free.

Why San Marcos Homeowners Call Topside Attic Insulation San Marcos for Icynene Work

We have served the San Marcos area for years, including older slab-on-grade homes near the Texas State University corridor where air sealing at the top plate is routinely skipped and always felt in the utility bill. Our technicians are background-checked and uniformed; calls are answered by a live person, 24/7. We source materials from Icynene, Demilec, and other manufacturers - no proprietary lock-in that limits your options. Every job closes with a Documented Photo Record and, where applicable, before-and-after blower-door numbers on a single printed page. The 365-Day Done Right Promise means if it is not done right, we make it right. That is Haven Standard Clause 1, and it applies to every home we enter, including the 9,000+ we have sealed and insulated since 2016.

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