Rockwool Attic Cleaning & Rodent Proofing in Boerne: What to Know First
We provide independent Rockwool attic cleaning & rodent proofing in Boerne, with most jobs completed in one to two days and a written price delivered before any work starts. A typical Rockwool attic cleanout and rodent exclusion in a Hill Country home runs between $2,400 and $4,800 depending on contamination level and access complexity. We are not affiliated with or authorized by Rockwool; we are an independent service provider who has worked with their products across thousands of Texas attics.
This page is for Boerne homeowners who have Rockwool Comfortbatt, Comfortboard, or AFB (Acoustical Fire Batt) insulation in their attic and are dealing with rodent damage, soiled insulation, or compromised air barriers. If you’re seeing compressed batts, tunneling through the stone wool matrix, or smelling ammonia in your HVAC returns, the insulation needs to come out before it goes back in. Call (830) 529-7780 and we’ll walk through what we found on similar jobs near the Cibolo Nature Center and Fair Oaks Ranch.
How Rockwool Products Fail - and How We Fix Them
- Comfortbatt R-23 and R-30 batts lose their dimensional recovery after prolonged rodent nesting. Rockwool’s stone wool is hydrophobic and mold-resistant, which is why builders spec it in Boerne’s humid shoulder seasons, but rodents compress the open fiber structure into permanent channels. We remove the soiled batts entirely rather than spot-clean, because once the elastic recovery is gone, the R-value doesn’t come back. We air-seal the deck, then reinstall fresh batts to original compression specs.
- Comfortboard 80 and 110 used as attic access panels or baffle boards crack at fastener points when chewed. The rigid boards are dense, but rodents target the edges where the board meets framing. We replace compromised boards and switch to metal flashing at chew points, which Rockwool’s warranty doesn’t cover but our 365-Day Done Right Promise does.
- AFB (Acoustical Fire Batt) in bonus-room knee walls wicks grease and rodent sebum differently than fiberglass. The binder in AFB holds oils near the surface instead of allowing them to drain through, so the smell persists even after surface cleaning. We fog with enzyme treatment specific to stone wool binders, then verify with a moisture meter before reinstalling or replacing.
- Rockwool’s higher density traps rodent droppings in the fiber matrix more tenaciously than loose-fill alternatives. A standard shop vac won’t extract fecal pellets from Comfortbatt; we use HEPA-negative air machines with agitation wands designed for dense mineral wool. In Boerne, where roof rats and deer mice both carry hantavirus, this extraction step is non-negotiable.
- Vapor-slow properties of Comfortboard create condensation at the sheathing when rodent tunnels breach the air barrier. Rockwool is vapor-permeable but not vapor-open like fiberglass; when rodents tunnel through, warm moist Hill Country air hits cold sheathing in January and February. We don’t just patch the tunnel. We pull the affected board, inspect the sheathing with a borescope, treat any fungal growth, and restore the air barrier with taped rigid foam before reinstalling Rockwool or switching to a more appropriate product for that specific cavity.
Our Rockwool Attic Cleaning & Rodent Proofing Process

- 1
Written price and scope before we load the truck. Haven Standard Clause 1: flat price, written scope, written warranty. For Rockwool jobs, the scope specifies whether we’re cleaning, replacing, or upgrading the product line.
- 2
Blower-door test and attic inspection with photo documentation. We pressurize the house, read the CFM50, then enter the attic with full PPE. Every compromised batt, tunnel, and dropping field is photographed and mapped.
- 3
Negative-air extraction and HEPA cleanup. Stone wool requires higher-velocity agitation than fiberglass. We bag it in the attic, never dragging contaminated batts through living space.
- 4
Structural repair, air sealing, and rodent exclusion. Top plates, can lights, plumbing chases, and eave returns get sealed with foam, caulk, or metal as appropriate. We install exclusion barriers at all entry points; in Boerne’s limestone-rich Hill Country, that often means foundation gaps and roof-line junctions where cedar shake meets stucco.
- 5
Reinstall or replace Rockwool, or spec alternative if the application changed. Sometimes the original Comfortbatt spec no longer makes sense after we’ve altered the air barrier. We explain the choice and document it.
- 6
Final blower-door test and printed report. You get the before-and-after CFM50, the pressure-differential reading in pascals, and the photo record. Seal the envelope first. Then fill it.
What Rockwool Attic Cleaning & Rodent Proofing Costs in Boerne
| Scenario | Typical Range |
|---|---|
| Light Comfortbatt contamination, partial removal, no replacement | $1,800 - $2,800 |
| Moderate rodent damage, full Comfortbatt removal, air sealing, reinstall | $3,200 - $4,600 |
| Heavy contamination with Comfortboard damage, structural repair, full replacement | $4,800 - $7,200 |
| AFB knee-wall decontamination with enzyme treatment | $2,400 - $3,600 |
What moves the price: attic square footage, accessibility (scuttle vs. pull-down vs. cut new access), extent of rodent exclusion work needed, and whether we find compromised electrical or HVAC ductwork once the insulation is out. We also service Reflectix radiant barrier systems when they’re part of the same assembly, though we never mix those specs without written homeowner approval. Call (830) 529-7780 for a written estimate - estimates are free, and we provide a Free Second Opinion on any competing written quote.
Why Boerne Homeowners Call Topside Attic Insulation Boerne for Rockwool Work

We’ve worked Rockwool products in Boerne since before the Fair Oaks Ranch expansion accelerated, back when most Hill Country builders were still defaulting to fiberglass. Wes Okafor runs a blower-door test before and after every job, then hands you a printed pressure-differential report in pascals so the performance change is documented, not claimed. Our technicians are background-checked and uniformed; calls are answered by a live person, 24/7. The 365-Day Done Right Promise applies to every completed job, and we source Rockwool alongside Owens Corning, Johns Manville, Knauf, and others - no proprietary lock-in means we spec what the house actually needs.
FAQs
No, Rockwool’s limited warranty covers product defect, not installation or service by third parties. As an independent Rockwool service provider, our work doesn’t void that coverage, though damage caused by improper handling or incompatible materials would fall outside it. We document our methods and materials so there’s a clear record if a claim ever arises. Call (830) 529-7780 if you want us to review your original install paperwork.
Most jobs finish in one to two days; heavy contamination with structural repair may extend to three. We don’t rush the negative-air extraction phase, because stone wool holds debris more stubbornly than fiberglass and incomplete cleanup means persistent odor. You’ll get a written schedule with your price before work starts.
Replace it if rodents have compressed more than 30% of the batt volume or if contamination extends into the bottom third where urine saturation meets the ceiling drywall. Repair is viable only for isolated surface soiling with intact fiber structure. We make this call during inspection and show you the photos so you understand the recommendation. Call (830) 529-7780 for a free assessment.
Yes, we stock Comfortbatt, Comfortboard, and AFB in standard R-values and thicknesses. If your original spec is discontinued or we determine a different product performs better in the repaired assembly, we’ll explain why in writing before substituting. We also work with Reflectix and other brands when the assembly calls for it.
We schedule Rockwool attic cleaning within 24 to 48 hours for active infestations, with temporary exclusion measures if needed to stop entry before full cleanup. We don’t perform same-day full removals because proper containment and negative-air setup can’t be rushed safely. A live person answers (830) 529-7780 around the clock to schedule and assess urgency.
Written by Wes Okafor, Owner, Topside Attic Insulation Boerne at Topside Attic Insulation Boerne, serving Boerne and nearby areas.