Rockwool Home Energy Audit Nationwide

Rockwool Home Energy Audit in San Marcos: What to Know First

We provide independent Rockwool home energy audit in San Marcos, typically completed same-day with a written price before any work starts. Most audits run between $280 and $550 depending on home size and test scope, and we publish before-and-after blower-door numbers on every job so you see the air-leakage change in CFM50, not just a claim. If you own Rockwool Comfortbatt, Comfortboard, or AFB (Acoustic Fire Batt) insulation and want to know whether your building envelope is performing as designed, this page is for you. Call (737) 337-8049 for a free estimate with a written scope delivered before anyone lifts a tool.

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How Rockwool Products Fail - and How We Fix Them

• Comfortbatt compression gaps in older San Marcos slab homes. Comfortbatt’s semi-rigid batts are designed to friction-fit between studs without sagging, but in the pre-1990 slab-on-grade homes common near the Texas State University corridor, installers often compress the batts to fit irregular framing cavities. Compressed mineral wool loses up to 30% of its labeled R-value. We remove the compressed batts, air-seal the cavity perimeter with acoustic sealant, and reinstall to full loft.
• Comfortboard thermal bridging at rim joists. Comfortboard 80 and 110 are dense boards meant for continuous exterior insulation, yet we find them used as interior rim-joist insulation in San Marcos crawl spaces where they don’t seal air movement at the wood-to-wood joints. The R-value is there on paper; the blower-door number says otherwise. We supplement with closed-cell spray foam at the rim-joist seam, then re-test.
• AFB acoustic batts mistaken for thermal insulation. AFB (Acoustic Fire Batt) is engineered for STC ratings and fire-stopping, not thermal performance. Homeowners who find AFB in attic knee walls or bonus-room partitions often assume it’s doing thermal duty. It isn’t. We identify the misapplication, quote thermal batts or blown-in mineral wool for the space, and document the change in your written scope.
• Rockwool cavity fill incomplete at top plates. The top plate, where wall framing meets ceiling drywall, is the most common bypass in San Marcos attics. Rockwool batts stop at the plate; air doesn’t. We seal the plate with fire-rated caulk or foam, then verify with a blower-door test - the only way to know the seal held.
• Moisture accumulation behind vapor-barrier misapplications. Rockwool is hydrophobic and vapor-open, which is why it works in mixed-humidity climates. But when a previous contractor adds a polyethylene vapor barrier on the warm side in a San Marcos home, trapped summer moisture condenses against the batt. We remove the poly, let the cavity dry, and leave the Rockwool exposed to breathe as designed.

Our Rockwool Home Energy Audit Process

1. 1
   Call and scope. A live person answers, 24/7. We ask square footage, year built, and what you’re experiencing - hot rooms, high bills, dust from attic penetrations. We schedule an audit, often within 48 hours.
2. 2
   Blower-door test - baseline. We depressurize the house to -50 Pascals and record the CFM50 reading, the single number that shows how much conditioned air your envelope is leaking. We also run thermal imaging to spot insulation voids and duct leakage.
3. 3
   Rockwool-specific inspection. We identify the product line, check for compression, misapplication, or moisture staining, and photograph everything. The photo record goes to you, not filed away.
4. 4
   Written price and scope. Under Haven Standard Clause 1, you get a flat price, written scope, and written warranty before anyone starts. No exceptions. Free second opinion on any competing estimate.
5. 5
   Air sealing first, then insulation correction. We seal top plates, can lights, and penetrations before touching insulation. The blower-door test runs again after sealing. The R-value tells you how slow heat moves through the material - the blower-door number tells you whether any of that matters.
6. 6
   Documentation and close. You receive a printed page with before-and-after CFM50, the photo record, and the 365-Day Done Right Promise in writing. We leave the site clean.

Before

After

What Rockwool Home Energy Audit Costs in San Marcos

Price moves with attic accessibility, square footage, and whether we find previous work that needs correcting. Homes in the Blanco River basin floodplain sometimes show moisture history that extends the inspection. We quote flat; the number doesn’t change once written. Call (737) 337-8049 for a free estimate - written price before any work starts, always.

Why San Marcos Homeowners Call Topside Attic Insulation San Marcos for Rockwool Work

We’ve sealed and insulated over 9,000 homes since 2016, every one with a written price first and a documented record at close. Wes Okafor trained in building science at Dawson Technical Institute on Chicago’s South Side, then spent two decades diagnosing why attics fail instead of just filling them. Our crew knows Rockwool’s product lines - Comfortbatt, Comfortboard, AFB - and we also service Reflectix and other major brands, so we won’t push a proprietary solution that doesn’t fit your assembly. Background-checked, uniformed technicians. Live person on the phone. Before-and-after blower-door numbers on every applicable job. The 365-Day Done Right Promise: if it’s not done right, we make it right.

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