Knauf Insulation Removal & Replacement in San Marcos: What to Know First
We provide independent Knauf insulation removal and replacement in San Marcos, with most attic jobs completed in one day and a written price delivered before any work starts. As an independent Knauf service provider, we’re not affiliated with or authorized by Knauf - we work on what San Marcos homeowners actually have in their attics. Most calls we get are from owners of Knauf EcoBatt or Jet Stream Ultra systems who’ve noticed hot spots, compressed material, or contamination from roof leaks or rodent activity. If you’re seeing any of that, call (737) 337-8049 - we answer live, 24/7, and we’ll give you a free, written estimate with no work until you see the price.
How Knauf Products Fail - and How We Fix Them
- EcoBatt R-30 and R-38 batts in San Marcos attics compress below labeled thickness after 8-12 years, especially in homes near the Blanco River corridor where summer attic temps regularly hit 140°F. The fiberglass doesn’t degrade, but the binder breaks down and the batt settles into a thin mat with gaps at the top plate. We remove the compressed material and replace with fresh EcoBatt or blown-in equivalent, never layering over the compromised layer.
- Jet Stream Ultra blown-in fiberglass develops voids around recessed can lights and chimney chases - the high-velocity application that makes it fast to install also means it doesn’t always bond well to irregular surfaces. In San Marcos slab-on-grade homes near the Texas State University corridor, we find these voids directly above the master bedroom where the top plate meets the drywall. We vacuum out the settled material, seal the penetrations with fire-rated caulk and rigid baffles, then re-blow to spec.
- Knauf Insulation with ECOSE Technology absorbs moisture differently than traditional fiberglass when roof leaks go undetected - the plant-based binder wicks water laterally instead of letting it pass through, creating a larger damaged zone than you’d expect. We’ve pulled EcoBatt sections in San Marcos homes where a single pipe boot leak saturated a 6-foot radius. We document the full extent with photos, remove to the deck, treat for mold if needed, then replace.
- Older Knauf loose-fill installed before 2015 often lacks proper depth markers, so homeowners and subsequent contractors add material without knowing the starting point. The result is uneven coverage - some bays at R-19, others at R-49 - and the homeowner pays for conditioned air they never feel. We strip to uniform, install depth rulers every 300 square feet, and blow to a verified, even plane.
- Knauf faced batts with kraft paper backing delaminate in high-humidity crawl spaces - the facing separates from the fiberglass and hangs like wet wallpaper, creating a vapor trap. San Marcos homes with crawl space vents left open in summer see this routinely. We remove the failed facing entirely, assess whether the crawl needs full encapsulation, and replace with unfaced material plus a proper vapor barrier if the scope calls for it.
Our Knauf Insulation Removal & Replacement Process

- 1
Call and scope. A live person answers. We ask about the Knauf product type if you know it, the home’s age, and what you’re seeing - hot rooms, odors, visible compression, or evidence of pests. We schedule a same-day or next-day site visit.
- 2
Attic inspection and blower-door baseline. We run a blower-door test - a pressurization reading that shows, in one number, how much air your building envelope is losing. We document the starting CFM50, photograph the existing Knauf material condition, and mark every penetration that needs sealing.
- 3
Written price before any work starts. Under Haven Standard Clause 1: flat price, written scope, written warranty before anyone lifts a tool. You’ll know exactly what we’re removing, what we’re installing, and what the blower-door target is.
- 4
Air sealing first, then insulation. We seal top plates, can lights, plumbing and electrical penetrations, and chimney chases with fire-rated materials. The R-value tells you how slow heat moves through the material - the blower-door number tells you whether any of that matters.
- 5
Removal, disposal, and replacement. We vacuum out old Knauf material with HEPA-contained equipment, dispose per local code, and install new insulation to the specified depth and R-value. We also work with Reflectix and other brands if your project calls for hybrid solutions.
- 6
Final blower-door test and documented handoff. We run the test again, print the before-and-after numbers on one page, and add the photos to your Documented Photo Record. The 365-Day Done Right Promise begins when we leave.
Before
AfterWhat Knauf Insulation Removal & Replacement Costs in San Marcos
Most attic insulation removal and replacement jobs in San Marcos run between $2.40 and $4.20 per square foot, with the typical 1,800-square-foot attic falling in the $4,300-$7,600 range. What moves the price:
- Accessibility: Attics with limited hatch access or truss spacing under 24 inches take longer to vacuum and re-blow.
- Contamination level: Rodent droppings or moisture-damaged Knauf ECOSE batts require PPE upgrades and possible remediation before replacement.
- Air sealing extent: Homes near the Texas State corridor with unsealed top plates typically need 4-6 hours of penetration work before new material goes in.
- Material choice: Replacing with fresh Knauf EcoBatt, upgrading to Jet Stream Ultra blown-in, or switching to Reflectix radiant barrier in roof-deck applications.
We don’t do “call for pricing.” You’ll get a written price on site, and our Free Second Opinion on Any Written Estimate means you can bring us a competing quote - we’ll read it with you line by line. Call (737) 337-8049 to schedule.
Why San Marcos Homeowners Call Topside Attic Insulation San Marcos for Knauf Work

We’ve sealed and insulated over 9,000 homes since 2016, and the ones in San Marcos keep us honest about summer attic performance. Wes Okafor and our crew know Knauf’s product line from field work, not from a distributor brochure - we’ve pulled enough compressed EcoBatt and patchy Jet Stream Ultra to spot the failure mode before we’re halfway up the ladder. Every job gets the Haven Standard treatment: written price first, background-checked uniformed technicians, a text when we’re on the way, and a Documented Photo Record when we leave. If the numbers don’t improve on the blower-door test, we don’t call it done. The 365-Day Done Right Promise applies to every completed job - if it’s not done right, we make it right.
FAQs
No - Knauf’s product warranty covers defects in manufacturing, not the installation or removal performed by a third party. As an independent Knauf service provider, we document the original product condition with photos before removal so any legitimate manufacturing claim can still be pursued. If you’re concerned about a specific product issue, call us at (737) 337-8049 and we’ll review what documentation you’ll need.
Most San Marcos attic jobs are completed in one day, with larger or contaminated attics occasionally stretching to a second morning. We don’t rush the air sealing - that’s what the blower-door number is for - but we also don’t stretch the schedule. You’ll get a specific day and arrival window in writing when we quote.
We won’t do it if the old layer is compressed, contaminated, or moisture-damaged. Layering over failed Knauf EcoBatt traps the problem, reduces the effective R-value of the new material, and violates our own standard - we seal first, then insulate, and we don’t insulate over a compromised substrate. The written scope will specify full removal when it’s warranted.
We source Knauf, Owens Corning, Johns Manville, Rockwool, and other brands through regional suppliers with San Marcos delivery routes. Most standard Knauf EcoBatt and Jet Stream Ultra orders arrive within 48 hours. If your job calls for Reflectix or a less common Knauf spec, we’ll confirm lead time in the written price so there are no surprises.
Spot repair only makes sense when the damage is isolated to less than 15% of the attic and the remaining material is at full labeled thickness with intact binder. In San Marcos homes over 15 years old, we usually find compression or settling that’s more widespread than the homeowner realized - the blown-in Jet Stream Ultra especially. We price both options in the written estimate so you can see the difference. Call (737) 337-8049 for an exact quote - estimates are free.
Written by Wes Okafor, Owner, Topside Attic Insulation San Marcos at Topside Attic Insulation San Marcos, serving San Marcos and nearby areas.