Icynene Blown-In Insulation in New Braunfels: What to Know First
We provide independent Icynene blown-in insulation service in New Braunfels, typically completing attic top-ups and dense-pack wall jobs in a single day with a written price locked before any work starts. Most homeowners with Icynene systems in this market are dealing with settled open-cell foam that no longer meets its original R-value, or they’re adding blown-in as a complementary layer where spray foam was never installed to full depth. If you’re seeing uneven temperatures between rooms, rising summer electric bills, or your Icynene installer is no longer responsive, this page is for you. Call (830) 243-6352 for a free estimate with upfront pricing.
How Icynene Products Fail - and How We Fix Them
- Icynene Classic Max settling below top plate level. The open-cell formulation in this series shrinks 5-8% over the first decade, and in New Braunfels homes with cathedral ceilings - common in the Hill Country builds off Highway 46 - that shrinkage leaves a thermal bypass at the wall-to-roof junction. We dense-pack that gap with blown-in cellulose treated with boric acid, restoring the continuous thermal boundary without disturbing the existing foam.
- Icynene MD-R-200 degraded surface in vented attics. This medium-density closed-cell line was sometimes applied too thin in local tract homes built 2012-2018, and attic ventilation carries dust that abrades the exposed surface. We cap degraded MD-R-200 with blown-in fiberglass to the DOE-recommended R-49 for our climate zone, which protects the foam and adds the missing thermal performance.
- Icynene LD-C-50 overspray blocking soffit ventilation. Light-density open-cell foam sprayed directly over soffit vents is a pattern we see in Canyon Lake-area retrofits where the original contractor skipped baffles. We remove the obstructive foam, install proper cardboard or foam baffles, then blow in insulation that maintains the intake airflow path. Without this, you’re trapping Gulf moisture against the deck.
- Icynene WaterBlown formulations absorbing humidity. Early WaterBlown open-cell jobs in New Braunfels, particularly in unconditioned attics, can hit 15-20% moisture content during our August dew points. Saturated foam loses R-value and risks mold. We test with a pinless moisture meter, remove compromised sections if needed, and replace with blown-in fiberglass or dense-pack cellulose that doesn’t hold water.
- Icynene H2Foam Lite shrinkage at rim joists. This newer open-cell line performs well when installed to full depth, but partial fills in crawl spaces common to Garden Ridge and Bulverde homes leave gaps where the foam pulls away from wood. We dense-pack those rim joist cavities with blown-in cellulose, which conforms to irregular voids better than batts and doesn’t require the full removal of existing material.
Our Icynene Blown-In Insulation Process

- 1
Call and scheduling. A live person answers, 24/7. We book a diagnostic visit with a named technician; you get a text when they’re en route.
- 2
Site diagnostic and blower-door test. We pressurize the house and measure CFM50 - the cubic feet of air leaking per minute at 50 pascals of pressure. In a 2019 New Braunfels home off River Road, we recently recorded 3,800 CFM50 before any work; the homeowner had no idea the Icynene top plates were never sealed.
- 3
Written price and scope. Before any insulation moves, you receive a flat price, written scope, and warranty terms. Haven Standard Clause 1: no work starts without it.
- 4
Air sealing first, then insulation. Top plates, can lights, plumbing and electrical penetrations, and chimney chases get sealed with foam or fire-rated caulk as appropriate. Only then do we blow.
- 5
Installation with documentation. We blow to marked depth, verify coverage with thermal imaging, and run the blower-door test again. You get printed pre- and post-numbers, plus photos of every stage.
- 6
Cleanup and follow-up. We leave with the attic vacuumed, the Documented Photo Record delivered, and a 365-Day Done Right Promise in writing.
Before
AfterWhat Icynene Blown-In Insulation Costs in New Braunfels
Most attic top-up jobs over existing Icynene run between $1,800 and $3,400 for a 2,000-square-foot home, depending on target R-value and whether we need to remove degraded foam first. Dense-pack wall jobs, where we fill stud cavities from the interior or exterior, typically range from $2,400 to $4,200 for the same footprint.
| Scenario | Typical Range |
|---|---|
| Icynene attic top-up (fiberglass, R-38 to R-49) | $1,800 - $3,400 |
| Icynene attic top-up (cellulose, R-38 to R-49) | $2,000 - $3,600 |
| Dense-pack walls over settled Icynene | $2,400 - $4,200 |
| Partial Icynene removal + replacement blow-in | $3,200 - $5,800 |
| Crawl space rim joist dense-pack | $1,400 - $2,600 |
What moves the price: accessibility (steep roof pitch, limited attic hatch size), existing foam condition requiring removal, and whether we need to install baffles or vent chutes. We also source Reflectix and other brands when a multi-layer solution makes more sense than matching Icynene. Every estimate is free, every price is written, and every job gets the same documentation. Call (830) 243-6352.
Why New Braunfels Homeowners Call Topside Attic Insulation New Braunfels for Icynene Work

We’ve worked Icynene systems in New Braunfels since 2016, from the original open-cell installs in Veramendi to newer closed-cell jobs in the Morningside buildouts. Wes Okafor and our crew know the difference between a shrinkage gap and a deliberate vent channel, and we won’t blow insulation over either one without addressing it first. The number on the blower-door printout tells you what the insulation did. Everything else is just talk.
Our materials come from Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber - no proprietary lock-in means we recommend what performs, not what we’re obligated to sell. The 365-Day Done Right Promise applies to every job, and our before-and-after blower-door numbers are filed by address for as long as you own the home. When a buyer’s inspector asks questions, you’ll have the paperwork.
FAQs
No - Icynene’s limited warranty covers defects in the original foam application, not subsequent improvements by independent contractors. As an independent Icynene service provider, we document our work separately and never alter warranted foam in ways that would compromise its integrity. If you’re unsure about your original warranty status, we can review your install paperwork during the estimate. Call (830) 243-6352 to schedule.
Yes - blown-in fiberglass at R-49 depth matches or exceeds the effective R-value of most original Icynene open-cell installs in New Braunfels attics, which were typically sprayed to 5.5 inches for R-19 or R-21. The key is air sealing first; without it, even high-R insulation underperforms. We verify with the blower-door test.
Most jobs are scheduled within 3-5 business days and completed in one day. Emergency situations - compromised foam with active moisture issues - can sometimes be addressed next-day. Call (830) 243-6352 for current availability; a live person answers 24/7.
Repair and supplement is usually more cost-effective when the foam is structurally sound but underperforming due to thin application or settling. Full removal makes sense when moisture has degraded the foam or when the original install blocks critical ventilation. We assess with a moisture meter and thermal imaging, then recommend based on what we find - not a default position.
We don’t stock Icynene spray foam kits; we’re a blown-in insulation contractor, not a spray foam reinstaller. For blown-in work over Icynene, we use Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, GreenFiber, and other quality materials selected for compatibility with your existing foam. If your job requires Icynene-specific spray foam touch-up, we’ll refer you to a qualified spray foam contractor and coordinate our scope with theirs.
Ready to see what your Icynene system is actually doing? Call (830) 243-6352 for a free estimate with upfront pricing, a written scope, and blower-door numbers you can keep.
Written by Wes Okafor, Owner, Topside Attic Insulation New Braunfels at Topside Attic Insulation New Braunfels, serving New Braunfels and nearby areas.