CertainTeed Attic Cleaning & Rodent Proofing in Sunnyvale: What to Know First
CertainTeed attic cleaning and rodent proofing in Sunnyvale typically runs $900 to $2,600 depending on attic size, contamination level, and how many entry points need sealing. Most jobs are done in one day, though heavily soiled attics with blown-in CertainTeed insulation that needs full removal can stretch to two. Call (669) 215-4805 and you’ll get Walt or a live team member, not a voicemail.
This page is for Sunnyvale homeowners who own a home insulated with CertainTeed products – usually CertainTeed InsulSafe or TrueComfort blown-in fiberglass, or R-30 to R-38 fiberglass batts – and have discovered rodents have been living up there. We’ll explain what you’re dealing with, why CertainTeed insulation gets hit hard, what it costs, and how we fix it so the animals don’t come back. We’ve been doing this work since 2000, and we’re the one down the road, not a call center.
How CertainTeed Products Fail – and How We Fix Them
- InsulSafe blown-in fiberglass compresses into rodent highways. CertainTeed InsulSafe is loose-fill fiberglass that rodents tunnel through relentlessly. Rats and mice carve runways beneath the insulation, flattening it to a fraction of its original R-value. In Sunnyvale attics we regularly find InsulSafe packed down from R-38 to effectively R-19 or worse in the tunneled areas. We remove the contaminated material, sanitize, and reinstall fresh product.
- TrueComfort batts get shredded for nesting material. CertainTeed TrueComfort fiberglass batts are soft and easy for rodents to tear apart. We see nests built inside the batt itself, especially near the top plates of exterior walls and around chimney chases in the older ranch homes off Remington Drive. The fix is full removal of the affected batts – patching shredded sections never works because urine has wicked through the material.
- Vapor barrier facings trap rodent urine against ceiling drywall. CertainTeed kraft-faced batts have that paper vapor retarder facing, and it’s a problem. Rodent urine pools on top of the facing instead of absorbing into the fiberglass, then the paper degrades and the smell pushes down into living space. We’ve seen this in dozens of Sunnyvale homes – the stains show up on the ceiling and the homeowner can’t figure out where they came from. The fix is removing the faced batts entirely and reinstalling unfaced product after decontamination.
- CertainTeed ThermaTech attic blankets hide activity for months. ThermaTech is a fiberglass blanket system, and by the time a Sunnyvale homeowner notices droppings in the garage or scratching in the walls, rodents have usually been in the attic for a full season. The blanket lays flat and continuous, so tunneling underneath doesn’t create visible disturbance from the attic hatch. We always pull back the blanket at the eaves to check the top plates – that’s where the entry points hide.
- Open soffit gaps and the CertainTeed Inteplast ventilation baffles create rodent entry points. We see it constantly: homes with CertainTeed Inteplast rafter baffles that don’t seal snugly against the soffit vents give rodents a clear path from the exterior eave into the attic. The baffles are designed for airflow, not pest exclusion, but the installation gap becomes a highway. We seal the junction where baffle meets top plate and install hardware cloth behind the soffit vent.
Our CertainTeed Attic Cleaning & Rodent Proofing Process
- 1
Call. You reach a live person, day or night. We ask about the space – square footage, insulation type, how long you’ve heard activity. We schedule a visit, usually within a day or two.
- 2
Attic assessment. We inspect the entire attic floor – every corner, every top plate, every baffle junction. We identify entry points, map the contamination, and determine whether your CertainTeed insulation can be decontaminated or needs full removal and replacement. Rodent droppings and urine in blown-in fiberglass almost always mean full removal.
- 3
Free second opinion on any written estimate. If you have a quote from another company, bring it. We’ll walk it line by line and tell you honestly if it’s fair, under-scoped, or padded. No trip charge inside our service county.
- 4
Removal and decontamination. We remove the contaminated CertainTeed insulation, HEPA-vacuum the space, and apply an enzyme-based decontaminant that breaks down urine crystals and odor at the source. Deodorizer alone won’t cut it – the urine has to be neutralized or the smell returns in the summer heat.
- 5
Rodent exclusion. We seal every entry point: soffit junctions, plumbing vent penetrations, HVAC chases, gable vents with loose screening, and the gap where the roof deck meets the fascia. Hardware cloth, metal flashing, and stainless steel mesh – no foam-only fixes that rats chew through in a week.
- 6
Reinsulation and final check. We reinstall fresh CertainTeed product (or another brand if you’re upgrading – we work with Owens Corning, Johns Manville, and Knauf too), then do a final sealing check. We don’t call the job done until we’d be comfortable sleeping in the house ourselves.
What CertainTeed Attic Cleaning & Rodent Proofing Costs in Sunnyvale
| Job | Typical Range |
|---|---|
| Attic inspection and entry point assessment | Free with scheduled service |
| Spot decontamination (small area, minimal droppings) | $350 – $700 |
| Full attic sanitizing and deodorizing, no insulation removal | $800 – $1,400 |
| Full insulation removal + sanitizing + reinsulation (CertainTeed InsulSafe) | $1,800 – $3,200 |
| Rodent exclusion and sealing (typical 4-8 entry points) | $600 – $1,600 |
| Complete job: removal, sanitizing, exclusion, new insulation | $2,400 – $5,500 |
What moves the price: attic square footage, how much insulation needs removal, how many entry points we find, and whether the rodent activity has spread into wall cavities. Older Sunnyvale ranch homes near Murphy Avenue tend to have more entry points than the newer builds, simply because decades of settling create gaps. We give upfront pricing before any work starts – no surprises. Call (669) 215-4805 for an exact quote, and remember seniors and veterans get 10% off, always.
Why Sunnyvale Homeowners Call Walt’s Insulation for CertainTeed Work
We’re locally owned. Walt Brenner founded this company in 2000, and his name is still on the door. Our published address and license number are real – you can drive past, knock, and talk to a person. Walt learned his craft at St. Philip’s College in San Antonio, where an instructor told him the best tradesmen are the ones who can explain what they’re doing while they’re doing it. He’s never forgotten that, and you’ll see it when our techs walk you through your attic before and after.
Every job is covered by the Done Right Promise: if it’s not done right, we make it right. No fine print, no runaround, no arguing about what “right” means. Our technicians are background-checked and uniformed, so you know exactly who’s in your house. And if your attic has products from another brand – Reflectix radiant barrier is common in Sunnyvale homes – we service those too. We’re not married to one manufacturer. We’ll tell you what actually belongs in your attic.
FAQs
Yes. CertainTeed’s product warranty covers manufacturing defects, not pest damage, animal intrusion, or neglect. Rodent contamination is specifically excluded from coverage. That’s why cleaning and exclusion are your responsibility as the homeowner. The silver lining: once we decontaminate and reinsulate, your attic is often better protected than it was on day one. Call (669) 215-4805 if you’re not sure where you stand with your warranty.
We can, but we’ll be honest with you: if rodents have been active, partial replacement usually doesn’t make sense. Urine and droppings spread further than you’d think through blown-in fiberglass, and matching density between old and new CertainTeed InsulSafe leaves you with uneven R-value. In most Sunnyvale attics we recommend full removal of contaminated sections and a clean reinstall. Free estimates means we’ll tell you what we’d do if it were our house.
We typically schedule attic assessments within one to two days, and for active infestations we move faster. Walt’s team answers the phone live 24/7, so you’ll speak to a real person who can get you on the schedule immediately, not a dispatcher in another state. Emergency exclusion – sealing the worst entry points to stop the noise – can often be done same week. Call (669) 215-4805 and tell us what you’re hearing.
For blown-in CertainTeed fiberglass with rodent contamination, it’s usually cheaper to remove and replace than to attempt decontamination in place. Deep-cleaning loose-fill fiberglass is labor-intensive and rarely gets the urine odor out completely because the material holds moisture against the drywall. Replacement with fresh product costs more upfront but eliminates the smell problem permanently. We’ll show you both options with real numbers before you decide. We also offer $40 off any repair over $200, which takes the edge off smaller jobs.
Not if the exclusion work is done right. The rodents already in the attic are removed or die off once entry points are sealed; the ones outside can’t get back in. The key is sealing every single entry point, not just the obvious ones. Rats can compress their ribcage to fit through a gap the size of a quarter. We seal corners, top plates, baffle junctions, vent screens, and the gap behind the gutter line – every weakness we’ve catalogued across hundreds of Sunnyvale attics. Our work is covered by the Done Right Promise, so if anything does come back, so do we.
Written by Walt Brenner, Owner, Walt’s Insulation at Walt’s Insulation, serving Sunnyvale and nearby areas.