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

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

GreenFiber attic cleaning and rodent proofing in San Antonio typically runs $1,900 to $4,800 depending on attic size, contamination level, and how many entry points rodents have carved into your home. We complete most jobs in one to two days, and we’re an independent GreenFiber service provider, not a manufacturer warranty shop. If you own a San Antonio home with GreenFiber insulation that rodents have turned into a latrine, this page tells you what actually happens on the job, what it costs, and why the fix has to address both the mess and the entry points at the same time. Call (866) 751-4428 and a real person answers, day or night.

Call (866) 751-4428

How GreenFiber Products Fail - and How We Fix Them

• GreenFiber Cellulose Blown-In Insulation settles after rodent traffic. Rodents burrow through loose-fill cellulose, creating channels and nests that compress the material. Once compressed, the R-value drops because trapped air pockets that do the insulating get crushed. We remove the contaminated material, sanitize the attic deck, and re-blow GreenFiber to the correct depth for San Antonio’s climate, which means R-38 to R-49 in most attics here.
• GreenFiber SANCTUARY blown-in insulation holds moisture after a rodent infestation. Urine and droppings soak into cellulose fibers and never fully dry in a San Antonio attic that hits 130 degrees in August. That moisture invites mold and keeps the odor alive long after the rodents are gone. We pull all contaminated SANCTUARY material, treat the decking with an antimicrobial, and install fresh insulation only after the attic is sealed and dry.
• GreenFiber Cocoon insulation becomes a highway inside wall cavities. Rodents follow the insulation from the attic down into wall voids where Cocoon was dense-packed. The tunnels they leave behind let conditioned air escape and attic heat bleed into your living space. We trace those paths during the exclusion process and seal them at both ends so the highway closes permanently.
• GreenFiber Insulation Plus (borate-treated) still needs full removal after heavy contamination. The borate additive resists fire and mold, but it doesn’t neutralize rodent feces or the pathogens that come with it. Homeowners sometimes ask if we can just spray and fluff it. We can’t, not in good conscience. The material has to come out when contamination is widespread. We’re not going to leave biological waste in your attic and call it done.
• GreenFiber R-60 deep-fill attics hide rodent damage longer. When insulation is a foot and a half deep, rats can nest in the middle of it and you won’t see a thing from the attic hatch. By the time you smell it or hear scratching, the damage is already extensive. We find these nests during our inspection by probing the material, not just looking at the surface. It’s the difference between a cleanup and a recurring problem.

Our GreenFiber Attic Cleaning & Rodent Proofing Process

1. 1
   Inspection and entry-point mapping. We walk the attic, probe the insulation, check the soffits, roof penetrations, and gable vents. Rats in San Antonio get in through gaps as small as a half inch. We find them all, not just the obvious one.
2. 2
   Contaminated GreenFiber removal. We use commercial HEPA-filtered vacuums to extract the contaminated insulation out through a hose to a truck-mounted containment system. No dust storms in your house, no fiberglass shards in the hallway.
3. 3
   Attic sanitizing and decontamination. We treat the decking, joists, and any accessible ductwork with an antimicrobial that kills the bacteria and neutralizes odor. This is the step that separates a real cleaning from a toy cleanup.
4. 4
   Rodent exclusion and proofing. We seal every entry point with materials rodents can’t chew through: galvanized steel mesh, metal flashing, and exclusion-grade sealants. Soft foam or steel wool alone won’t cut it in San Antonio, where rats are persistent and motivated by the heat.
5. 5
   Fresh GreenFiber installation. We blow in new GreenFiber cellulose to the correct depth for your home’s R-value target, then level it across the attic floor. The Done Right Promise applies to the whole job, and if something isn’t right, we come back and make it right.
6. 6
   Final walkthrough and the guarantee. We show you what we found, what we did, and what the attic looks like when we’re finished. You get straight answers, not a sales script.

What GreenFiber Attic Cleaning & Rodent Proofing Costs in San Antonio

Here’s what we typically see in San Antonio attics, based on the jobs we’ve done across Alamo Heights, Stone Oak, Leon Valley, and the older neighborhoods around Woodlawn Lake:

• Basic attic cleanout, no rodent damage: $1,900 to $2,800 for a 1,200 to 1,800 square foot attic.
• Full decontamination with GreenFiber removal and replacement: $3,200 to $4,800 depending on attic size and contamination depth.
• Rodent exclusion alone: $600 to $1,400 depending on how many entry points need sealing.
• Attic sanitizing (no insulation replacement): $900 to $1,800.

What moves the price: attic square footage, how deep the GreenFiber is, whether the contamination reached the decking or just the top layer, and how many entry points the rodents opened. We give upfront pricing before any work starts, and the free second opinion means you can get a written estimate from anyone else and we’ll review it with you at no charge. Call (866) 751-4428 for an exact quote.

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

We’ve been doing this since 2000, and we’re the one down the road, not a franchise with a call center in another state. Walt Brenner grew up on the north side of San Antonio, not far from Brackenridge Park, and he still shows up on jobs when he’s needed. Our techs are background-checked and uniformed, so you know who’s walking into your house. We answer the phone live, 24/7. That’s not a slogan; it’s how we run the place. And when a GreenFiber job calls for a different material for a specific application, we’re not locked into one brand. We work with Owens Corning, Rockwool, CertainTeed, Knauf, Johns Manville, and Reflectix too. If one product fits your attic better after we see what the rodents left behind, we’ll tell you. The Done Right Promise covers the work for life, and seniors and veterans always get 10% off.

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