Owens Corning Attic Cleaning & Rodent Proofing in San Marcos: What to Know First
We provide independent Owens Corning 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. Our typical turnaround from call to crew on-site is 24 to 48 hours for standard appointments, same-day for active infestations. We’re not Owens Corning authorized; we’re an independent Owens Corning service provider with no manufacturer affiliation, which means we source parts based on what actually fixes your attic, not what moves a dealer’s inventory. This page is for homeowners in San Marcos who know they’ve got Owens Corning materials overhead and need someone who can identify the product line, spot how rodents have exploited it, and document the fix with photos and a written record. Call (737) 337-8049 for a free estimate - we’ll read your attic with you, not at you.
How Owens Corning Products Fail - and How We Fix Them
- Owens Corning AttiCat blown-in fiberglass settles unevenly in San Marcos attics after rodent tunneling. The pink loose-fill compresses where rats and mice push through, creating bare spots at the eaves where R-value drops to near zero. We remove the contaminated material, seal every penetration with galvanized steel mesh, then reinstall to original depth specifications with fresh AttiCat or an equivalent loose-fill.
- Owens Corning ProPink High-Performance batts shred at the facing adhesive when urine-soaked. The kraft paper backing delaminates, and the fiberglass beneath mats into a flat, useless pancake. We strip the damaged batts entirely - no spot repairs on urine-saturated fiberglass - sanitize the deck, and replace with new unfaced batts or blown-in depending on your roof framing.
- Owens Corning Raft-R-Mate baffles collapse after squirrel nesting, blocking soffit intake. The foam channels get packed with debris, then your attic loses the ventilation path that keeps sheathing dry in our 95-degree San Marcos summers. We clear the baffles or replace them if chewed, verify clear soffit-to-ridge airflow, and document it with photos.
- Owens Corning Foamular rigid board at attic hatches and kneewalls gets gnawed at the edges for nesting material. The XPS foam is attractive to rodents for burrowing; they don’t eat it, but they tunnel through it. We cut out the damaged sections, install 26-gauge sheet metal flashing as a chew barrier, then replace the Foamular with new board sealed to the framing.
- Owens Corning EcoTouch batts with PureFiber technology lose loft when compressed by stored items or previous contractor traffic. The formaldehyde-free binder breaks down under sustained compression, and once flat, it won’t rebound. We fluff-test suspect areas during our initial inspection; if recovery is under 75 percent, we pull and replace rather than leave you with a permanent cold spot.
Our Owens Corning Attic Cleaning & Rodent Proofing Process

- 1
Inspection with photo documentation. We photograph every Owens Corning product line we identify, the rodent damage pattern, and the entry points. You get these photos in your written scope.
- 2
Written price before any work starts. Flat price, line-itemed by task - removal, sanitizing, exclusion, insulation replacement - with no authorization to proceed until you have it in hand.
- 3
Contaminated material removal and HEPA-contained disposal. All Owens Corning product coming out goes into sealed bags; we don’t drag it through your living space.
- 4
Sanitizing and decontamination of the attic deck and framing. Enzyme treatment on biological waste, then a second pass with an antimicrobial where needed.
- 5
Rodent proofing and exclusion with galvanized steel. Every hole larger than a quarter-inch gets mesh, foam alone doesn’t stop rodents. We also source Reflectix and other brand-compatible barriers where the original Owens Corning component isn’t the right fix.
- 6
Insulation replacement, air sealing at top plates and penetrations, and final photo record. New Owens Corning or equivalent materials installed to spec, documented, and backed by our 365-Day Done Right Promise.
Before
AfterWhat Owens Corning Attic Cleaning & Rodent Proofing Costs in San Marcos
Most Owens Corning attic cleaning and rodent proofing jobs in San Marcos run between $2,400 and $5,800 for a typical 1,500 to 2,500 square foot home. Here’s what moves that number:
- Light cleanout with spot rodent proofing: $2,400-$3,400 - minimal contamination, one or two entry points, no full insulation replacement needed.
- Moderate removal with full sanitizing and partial re-insulation: $3,400-$4,600 - widespread soiling, multiple entry points, replacement of damaged batts or settled blown-in.
- Heavy restoration with complete insulation replacement and comprehensive exclusion: $4,600-$5,800+ - severe infestation, compressed or shredded Owens Corning throughout, structural repairs to baffles or hatch assemblies.
Factors that push higher: multiple roof levels, active squirrel colonies requiring one-way doors before sealing, Foamular rigid board replacement at kneewalls, or homes near the Blanco River corridor where humidity accelerates mold on contaminated fiberglass. We also handle Reflectix radiant barrier systems when they’re part of the same attic assembly. Every estimate is free, written, and delivered before any work starts - call (737) 337-8049 to schedule.
Why San Marcos Homeowners Call Topside Attic Insulation San Marcos for Owens Corning Work

We’ve been independently owned and operated under The Haven Standard since 2016, and we’ve sealed and insulated over 9,000 homes - every one with a written price first and a documented record at the end. Our technicians are background-checked, uniformed, and trained to identify Owens Corning product lines by sight, not by guess. We don’t push proprietary products; we source from Owens Corning, Johns Manville, Knauf, Rockwool, and others so the fix matches the problem, not our inventory. Calls are answered by a live person 24/7, no voicemail loops. And our 365-Day Done Right Promise means if something’s not right, we make it right - backed by the written scope and warranty you already have in hand. The R-value tells you how slow heat moves through the material - the blower-door number tells you whether any of that matters. We give you both when the job allows.
FAQs
No - Owens Corning’s product warranty covers manufacturing defects, not damage from rodents or improper installation by others. As an independent Owens Corning service provider with no manufacturer affiliation, we use warranty-safe practices: we match or exceed original installation specs, use compatible materials, and document everything so you have a record if a defect claim ever arises on the remaining original product. For questions about a specific warranty, call us at (737) 337-8049 and we’ll read it with you.
We source OEM Owens Corning when it’s the right part for the repair - AttiCat loose-fill, ProPink batts, Raft-R-Mate baffles - but we also use quality aftermarket or equivalent materials from Johns Manville, Knauf, and others when they perform better for your specific situation. We never lock you into a proprietary product. Your written scope lists exactly what we’re installing and why.
If you smell ammonia when the HVAC runs, see compressed or stained pink fiberglass, or hear activity overhead, you need at least an inspection. Light surface soiling with intact, uncompressed insulation usually means cleanout and spot repair. Widespread urine saturation, shredded batts, or tunneling through settled blown-in means full removal, sanitizing, and replacement. We’ll show you the photos and give you both options with prices - no upsell pressure.
Spot repair is cheaper upfront but rarely lasts on urine-contaminated fiberglass. Once the binder in Owens Corning EcoTouch or the kraft facing on ProPink batts is compromised, the material continues to degrade and smells return with humidity. In San Marcos, where summer attic temperatures exceed 140°F, that degradation accelerates. We recommend replacement of any section with visible staining or compression; the long-term cost is lower than doing it twice. Call (737) 337-8049 for a free estimate - we’ll show you exactly what we’re seeing.
Same-day appointments are available for active infestations in San Marcos and nearby areas. We answer calls live 24/7, and we’ll give you a two-hour arrival window with a text when the technician is en route. For standard inspections, typical turnaround is 24 to 48 hours. Call (737) 337-8049 now if you’re hearing activity - rodents don’t wait, and neither do we.
Written by Wes Okafor, Owner, Topside Attic Insulation San Marcos at Topside Attic Insulation San Marcos, serving San Marcos and nearby areas.