Icynene Wall Insulation Nationwide

Icynene Wall Insulation in San Marcos: What to Know First

We provide independent Icynene wall insulation service in San Marcos, Texas, with most wall jobs completed in one day and a written price delivered before any work starts. As an independent Icynene service provider, we service all Icynene open-cell and closed-cell foam lines installed in local homes, including the classic LD-C-50 open-cell series and the newer Icynene ProSeal LE closed-cell system. Most San Marcos homeowners with Icynene walls call us when they notice draft patterns, rising utility bills, or sound transmission that wasn’t there after the original install. Call (737) 337-8049 for a free estimate with upfront pricing.

Call (737) 337-8049

How Icynene Products Fail - and How We Fix Them

• LD-C-50 shrinkage at stud bays. The original open-cell formula can pull away from framing members over multiple San Marcos heat cycles, creating thin air channels you can’t see without thermal imaging. We remove the compromised section, re-foam with matched density, and verify fill with borescope inspection.
• ProSeal LE closed-cell overdensity in narrow walls. When installers pump the 2.0 lb density foam into 2×4 exterior walls common in 1980s San Marcos ranch homes, the material exerts pressure that bows drywall inward. We spot-drill, relieve the stress pocket, and reapply at reduced lift thickness with proper cure time between passes.
• Moisture lock behind Icynene in south-facing walls. San Marcos afternoon sun drives vapor inward; if the original contractor skipped the vapor retarder on LD-C-50 applications, the foam traps humidity against OSB sheathing. We strip to the cavity, treat any sheathing damage, and reinstall with proper permeance layering for our climate zone.
• Acoustic failure in Icynene interior partitions. Homeowners near the Texas State University corridor who expected soundproofing from LD-C-50 often find it underperforms against low-frequency transfer through shared walls. We assess the assembly, then augment with strategic density changes or complementary batt where the foam alone won’t handle the STC requirement.
• Retrofit access in brick veneer homes near the Blanco River. Icynene was often installed in new construction with no plan for later cavity access. For drill-and-fill retrofits, we map electrical and plumbing runs with thermal pre-scanning, then use minimal 5/8-inch injection ports sized for Icynene’s expansion ratio to avoid exterior patching that doesn’t match weathered masonry.

Our Icynene Wall Insulation Process

1. 1
   Call and schedule. A live person answers 24/7. We book a diagnostic visit with a named technician and text you when they’re en route.
2. 2
   Blower-door test and thermal scan. We pressurize the house to measure air leakage in CFM50, then run infrared to locate where Icynene has separated, shrunk, or was never properly applied. The R-value tells you how slow heat moves through the material - the blower-door number tells you whether any of that matters.
3. 3
   Written price and scope. Under Haven Standard Clause 1: flat price, written scope, written warranty before anyone lifts a tool. No work starts without it.
4. 4
   Air sealing first, then insulation. Top plates, electrical penetrations, and rim joists get sealed before any new Icynene goes in. We don’t blow foam over leaks.
5. 5
   Install with OEM-matched or verified aftermarket material. We source Icynene-compatible foam from our supplier network - including Demilec and GreenFiber alternatives when appropriate - and document batch numbers. We never claim exclusive status with any brand.
6. 6
   Post-test and documentation. Final blower-door reading, photo record of all accessed cavities, and a single printed page showing your before-and-after air-changes-per-hour figure. The 365-Day Done Right Promise applies from this moment.

Before

After

What Icynene Wall Insulation Costs in San Marcos

Homes near the Texas State University corridor with original 1970s-1980s construction often need complementary air sealing at the top plate before wall work, which adds $280 - $520 but shows measurable improvement in the blower-door result. Call (737) 337-8049 for an exact quote - estimates are free, and we provide a Free Second Opinion on any written estimate you’ve already received.

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

We’ve sealed and insulated over 9,000 homes since 2016, every one with a written price before work started and a documented record when the crew left. Wes Okafor, who grew up on Chicago’s South Side and trained in building science at Dawson Technical Institute, runs blower-door tests before and after every applicable job - then hands you a single printed page with the numbers, not a claim.

Our technicians are background-checked and uniformed. We also service Reflectix and other major brands, so if your walls contain mixed materials or you’re considering alternatives for a partial retrofit, we can assess without pushing a single product line. Under Haven Standard: Arrive on schedule, you get a named technician and a text when they are on the way.

FAQs