GreenFiber Spray Foam Insulation in New Braunfels: What to Know First
As an independent GreenFiber service provider, we install and repair GreenFiber spray foam insulation systems in New Braunfels homes with same-day response on most calls and a written price before any work starts. Most GreenFiber spray foam jobs in the area run between $1,800 and $4,500 depending on whether we’re treating an attic roof deck, rim joist, or full wall cavity. We don’t quote over voicemail, and we don’t start work until you have our scope and price in writing.
This page is for GreenFiber owners in New Braunfels who need spray foam insulation installed, expanded, or repaired - whether your builder used GreenFiber low-density open-cell in a 2019 Canyon Lake-area spec home or you’re retrofitting a 1980s slab near I-35 with closed-cell rim joist work. If you’re seeing drafts, moisture spots, or your energy bills climbed after a previous install, we can diagnose it. Call (830) 243-6352. A live person answers, 24/7.
How GreenFiber Products Fail - and How We Fix Them
- GreenFiber Low-Density Open-Cell (LDOC-200 series) shrinkage in hot attic roof decks. In New Braunfels, attic temperatures push 140°F from June through September. The LDOC-200 series can pull away from rafter edges after 3-5 years of thermal cycling, creating a thermal bridge - a gap where heat bypasses the insulation entirely. We cut back the separated foam, re-prime the substrate with a high-tack bonding agent rated for 180°F surface temps, and reapply with a compatible open-cell that we verify with a core density sample before we leave.
- GreenFiber Medium-Density Closed-Cell (MDCC-500 series) delamination from OSB roof sheathing in high-humidity conditions. The Guadalupe River corridor and neighborhoods near Landa Park hold ambient moisture longer than drier Hill Country pockets. When closed-cell separates from sheathing, condensation forms in the void and shows up as dark staining on the drywall below. We remove the failed section, mechanically abrade the sheathing to expose fresh wood fiber, and reapply with a moisture-cure closed-cell that we source from Demilec or Icynene - never a generic drum - so the chemistry matches what GreenFiber originally specified.
- GreenFiber Rim Joist Foam (RJF-100) incomplete coverage in slab-on-grade homes. This is the one we find most often in older New Braunfels subdivisions like Oak Run and Comal Farms. The original installer stopped at the visible band joist and missed the sill plate-to-foundation gap. Cold air pours through that seam all winter. We pull back the existing RJF-100, seal the sill plate with acoustic sealant and backer rod, then reinstall closed-cell to the full 3-inch thickness so the thermal envelope actually closes at the foundation line.
- GreenFiber Garage Ceiling Foam (GCF-150) overspray onto recessed light housings. The GCF-150 line is often used in bonus-room-over-garage applications. When foam encroaches on non-IC-rated can lights, it’s a fire hazard and it voids the fixture warranty. We map every electrical penetration with a thermal camera before cutting foam, then install fire-rated light covers (Tenmat or equivalent) and re-foam around them with a 3-inch clearance we document in the photo record.
- GreenFiber Wall Cavity Foam (WCF-300) off-ratio curing from improper substrate temperature. We see this in winter installs where the crew didn’t pre-condition the stud bay. The B-side resin doesn’t fully react, leaving a tacky, odorous core that off-gasses for months. We core-sample suspect areas, and if the foam fails the thumb-penetration test - a field check where properly cured closed-cell resists significant pressure - we remove the affected section and reapply with heated hoses and substrate pre-warming, which is the only way to hit manufacturer’s spec when outdoor temps drop below 50°F.
Our GreenFiber Spray Foam Insulation Process
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Call and scheduling. A live person answers (830) 243-6352, 24/7. We book a diagnostic window and text you when the technician is en route - Haven Standard: Arrive on schedule, you get a named technician.
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On-site blower-door test and thermal imaging. We pressurize the house and record the CFM50 baseline - the number of cubic feet of conditioned air leaking per minute at 50 pascals of pressure. Then we run a FLIR scan to locate bypasses the blower door confirms but the eye can’t see.
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Written scope and price. Before any foam touches your house, you get a flat price, written scope, and written warranty. Haven Standard Clause 1. No exceptions. If you have a competing quote, we offer a Free Second Opinion - we’ll read it with you line by line.
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Air sealing first, then insulation. Top plates, can lights, plumbing penetrations, and electrical chases get sealed with acoustic sealant and expanding foam. We never blow or spray insulation over an unsealed attic floor. The blower-door test after sealing tells us if we hit the target before the main insulation goes in.
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GreenFiber-compatible application with OEM or specified aftermarket. We source from GreenFiber’s distribution chain or from verified-equivalent lines by Demilec, Icynene, or Johns Manville - no proprietary lock-in, but no mystery-chemical drums either. Core samples are taken on closed-cell jobs to verify density.
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Post-job blower-door test, photo record, and documentation. We pressurize again and hand you the before-and-after printout. The Documented Photo Record goes to your email before the crew leaves. The number on the blower-door printout tells you what the insulation did. Everything else is just talk.
Before
AfterWhat GreenFiber Spray Foam Insulation Costs in New Braunfels
Most GreenFiber spray foam jobs we complete in New Braunfels fall in these ranges:
- Rim joist (closed-cell, typical 1,800 sq. ft. slab home): $1,800 - $2,800
- Attic roof deck (open-cell, 1,200 sq. ft. footprint): $2,400 - $3,600
- Attic roof deck (closed-cell, same footprint): $3,200 - $4,800
- Garage ceiling bonus room (open-cell, 400 sq. ft.): $1,400 - $2,200
- Wall cavity retrofit (closed-cell, selective access): $3,500 - $5,500
What moves the price: accessibility (steep roof pitch or tight crawl space), extent of existing foam removal, whether we need to install ignition barriers per local amendment to the IRC, and if the substrate requires priming or mechanical abrasion for adhesion. We don’t estimate by square footage alone because the prep work is where the performance lives. Call (830) 243-6352 for a written price - estimates are free, and you’ll have the number before we start.
Why New Braunfels Homeowners Call Topside Attic Insulation New Braunfels for GreenFiber Work
We’ve sealed and insulated over 9,000 homes since 2016, and a growing share of our New Braunfels calls involve GreenFiber systems that need correction or expansion. Wes Okafor and our crew know the GreenFiber product line from hands-on work in neighborhoods along River Road, in Vintage Oaks, and through the older core near downtown where slab homes present the same rim-joist problems decade after decade.
Our 365-Day Done Right Promise applies to every job. If the blower-door number doesn’t hold, we return and make it right. We also carry Reflectix and other multi-brand backup materials, so if your GreenFiber line has been discontinued or the chemistry isn’t right for your specific application, we have options that don’t lock you into a single supplier. Every technician is background-checked and uniformed. Every call is answered by a live person. Every job ends with documentation you can show a buyer’s inspector.
FAQs
GreenFiber’s warranty covers original product defects, not installation errors or subsequent modifications. Our work carries its own 365-Day Done Right Promise and written warranty, but we are not affiliated with or authorized by GreenFiber, so we cannot extend or enforce the manufacturer’s original coverage. Call (830) 243-6352 and we’ll review what documentation you have.
We source GreenFiber-compatible foam through their distribution chain when available, and we use verified-equivalent products from Demilec, Icynene, Johns Manville, or Knauf when the original line has been discontinued or when the chemistry better suits your application. We never use unlabeled bulk foam. The product spec is listed in your written scope before work starts.
Localized repairs - shrinkage gaps, delaminated sections, incomplete rim-joist coverage - typically run 40-60% less than full removal and reapplication. We only recommend full removal when the foam is off-ratio, contaminated, or so extensively failed that patching would create more seams than solid surface. We give you both options in writing when both are viable.
Most calls are scheduled within 24-48 hours, and emergency air-leak diagnostics - when a homeowner reports active moisture intrusion or a significant temperature swing after recent foam work - get same-day response. A live person answers (830) 243-6352 around the clock to book the next available window.
You get a before-and-after blower-door test report with CFM50 readings, a Documented Photo Record of the work area, and a written scope with warranty. On a typical New Braunfels home, we expect to cut air leakage by 30-50% after proper air sealing and spray foam installation. The printout proves it; you keep it.
Written by Wes Okafor, Owner, Topside Attic Insulation New Braunfels at Topside Attic Insulation New Braunfels, serving New Braunfels and nearby areas.