Icynene Attic Cleaning & Rodent Proofing Nationwide | Walt’s Insulation

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

Icynene attic cleaning and rodent proofing in San Antonio typically runs $1,200 to $4,800 depending on attic size, contamination level, and whether the spray foam itself needs repair. Most jobs take one to two days, and we handle everything as an independent Icynene service provider, which means we’re not tied to manufacturer pricing or red tape. If you’ve got rodents in your Icynene-insulated attic, you already know the problem: they burrow into that soft open-cell foam like it’s a five-star hotel. Call (866) 751-4428 and we’ll tell you straight what you’re dealing with.

Call (866) 751-4428

This page is for San Antonio homeowners who paid good money for Icynene spray foam and now need the attic cleaned, sanitized, and sealed against rodents. We’ve been doing this work since 2000, and we’ve seen every way a San Antonio attic can go wrong.

How Icynene Products Fail - and How We Fix Them

Icynene is a solid product when it’s installed right, but it has some specific weak points in South Texas attics. Here’s what we actually find up there:

• Rodent tunneling in Icynene Classic open-cell foam. Rats and mice chew through the soft foam to build nests, leaving tunnels and shredded material mixed with droppings. We cut out the damaged section, treat the area, and re-foam. On a job in Alamo Heights last year, a single rat had carved a five-foot tunnel through knee-wall foam without the homeowner knowing it.
• Icynene ProSeal and ProSeal LE pulling away from rafters. These closed-cell products can delaminate in San Antonio’s heat-cycling when the roof deck hits 140-plus degrees and cools overnight. Gaps open up, and rodents find them fast. We clean the substrate and re-adhere the foam, then check the whole roofline for separation.
• Contaminated Icynene from rodent urine and nesting. Icynene Classic absorbs moisture, which means urine soaks in rather than pooling on top. The smell lingers, and the foam becomes a health hazard. You can’t just spray over it. We remove contaminated foam to the roof deck, sanitize the framing, and install fresh Icynene or a comparable closed-cell product.
• Icynene Lite and Light-Density foam compression from stored boxes. Icynene Lite has a lower density than Classic, so it crushes under weight. Compressed foam loses R-value and creates voids where rodents travel. We assess compression zones and replace foam in any area that’s lost more than 30 percent of its thickness.
• Icynene MD-C-200 and MD-R-210 off-ratio installation. When the A and B components are mixed at the wrong ratio, the foam cures brittle or stays sticky for years. Rodents love the sticky version because it’s easy to burrow through. We test the existing foam’s cure and tell you honestly whether it needs spot repair or full removal.

We also service other insulation brands in the same attics. A lot of San Antonio homes have Icynene in the roofline and Reflectix radiant barrier under the roof deck, so we work with both when we’re doing a cleanout.

Our Icynene Attic Cleaning & Rodent Proofing Process

Every Icynene job follows the same sequence. No surprises, no shortcuts.

1. 1
   Attic inspection and foam assessment. We check the Icynene for rodent damage, delamination, moisture, and compression. We’ll tell you what needs replacing and what’s still sound.
2. 2
   Rodent exclusion mapping. We find every entry point. On San Antonio homes, that’s usually where AC lines penetrate the soffit, gaps at the roofline, or chewed gable vents.
3. 3
   Contaminated foam removal. We bag and remove the damaged Icynene, vacuums the droppings, and treat the affected framing with a hospital-grade sanitizer.
4. 4
   Exclusion sealing. We seal entry points with steel mesh, flashing, and foam backer. Rodents cannot chew through steel, but they’ll chew right back through foam or caulk alone.
5. 5
   Foam repair or replacement. We reinstall Icynene to match the existing system, then verify depth and coverage.
6. 6
   Final check and cleanup. We walk the attic with you, show you the sealed entry points, and leave the space cleaner than we found it. The job’s covered by the Done Right Promise: if a rodent gets back in through a point we sealed, we come back.

What Icynene Attic Cleaning & Rodent Proofing Costs in San Antonio

Here’s the honest pricing breakdown for typical Icynene jobs in San Antonio. The attic size and contamination level drive most of the cost.

• Attic cleanout with Icynene assessment (no foam repair): $800 to $1,600
• Full cleanout, sanitizing, and rodent exclusion: $1,800 to $3,400
• Targeted Icynene foam removal and replacement (less than 200 sq ft): $1,500 to $2,800
• Whole-attic Icynene removal, sanitizing, exclusion, and re-foam: $4,000 to $8,000+

What moves the price: how much foam the rodents damaged, whether the attic has flat ceilings or steep rooflines, and whether we’re dealing with mice (small entry points) or rats (bigger problem). Call (866) 751-4428 for a free estimate, and we’ll give you a number before we leave the driveway. No trip charge in our service county, and seniors and veterans always get 10 percent off.

Why San Antonio Homeowners Call Walt’s Insulation for Icynene Work

Walt Brenner started this business in 2000 because he got tired of watching San Antonio homeowners get sold insulation systems that made sense in Ohio and no sense in South Texas. We’re the one down the road. Our techs know Icynene because we’ve been cutting into it, fixing it, and replacing it for over two decades. We’re locally owned and owner-operated with a published address and license number. A live person answers the phone 24/7. When you call us, you’re not getting a call center. You’re getting someone who knows what a 150-degree San Antonio attic does to spray foam. And every job we do carries the Done Right Promise: if it’s not done right, we make it right.

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