CertainTeed Spray Foam Insulation in New Braunfels: What to Know First
We provide independent CertainTeed spray foam insulation in New Braunfels, with most jobs quoted in writing on the first visit and completed within one to three business days. Our written price before any work starts runs between $2,800 and $6,400 for typical residential CertainTeed spray foam applications, depending on whether we’re treating an attic roof deck, rim joist, or garage ceiling. This page is for homeowners who already have CertainTeed insulation products in place and need a contractor who understands how those specific materials behave in the Hill Country climate, not a generic foam installer. Call (830) 243-6352 for a free written estimate.
How CertainTeed Products Fail - and How We Fix Them
- CertainTeed CertaSpray Open-Cell shrinkage at roof decks in New Braunfels. The combination of 100°F summer attic temperatures and seasonal humidity swings causes CertaSpray OC to pull away from rafter edges after 7-10 years. We see this most in homes off Loop 337 and the River Road corridor where attic ventilation was marginal to begin with. Our fix: remove the separated foam, recondition the substrate with a targeted air-sealing pass on all top plates and penetrations, then reinstall to the original R-value with documented before-and-after blower-door readings.
- CertainTeed CertaSpray Closed-Cell delamination from OSB roof sheathing. Closed-cell is denser and more rigid, but when installed over OSB that wasn’t properly dried or primed, the bond fails and creates air gaps that show up as cold spots on thermal imaging. We find this in 2018-2021 builds around Fischer and McQueeney where builders rushed the envelope close. We strip the failed sections, treat the sheathing with a compatible bonding agent, and reapply to CertaSpray CC spec, 2-3 inches for the vapor barrier.
- CertainTeed SmartBatt with spray foam hybrid systems losing effectiveness at the interface. Some New Braunfels contractors layered SmartBatt fiberglass batts over spray foam in the late 2010s, creating a double-vapor-barrier scenario that traps moisture. We’ve pulled saturated batts from attics in the Gruene area where the foam was doing its job but the batt was rotting against it. Our fix: remove the batt layer, assess the foam for water damage, and either restore the foam as the primary air barrier or redesign the assembly with a single, continuous insulation strategy.
- CertainTeed MemBrain smart vapor retarder failures in crawl space applications. When MemBrain is installed without adequate sealing at seams and penetrations, it becomes a pathway rather than a barrier. We see this where spray foam was applied to rim joists but the MemBrain above wasn’t taped at electrical penetrations. We remove the compromised membrane, reseal all junctions with acoustical sealant, and reinstall with documented photo records of every seam.
- CertainTeed InsulSafe SP blown-in settling above compromised CertaSpray air barriers. In hybrid attic systems where InsulSafe SP was blown over CertaSpray open-cell that had developed shrinkage gaps, the blown material filters into the conditioned space through ceiling penetrations. We find this in older homes near downtown New Braunfels with original plaster-and-lath ceilings. Our fix: vacuum the migrated material, restore the CertaSpray barrier, then reinstall the blown-in to proper depth with a verified density check.
Our CertainTeed Spray Foam Insulation Process

- 1
Call and schedule. A live person answers, or we return your text within the hour. We book a diagnostic visit with a named technician.
- 2
Blower-door test and thermal imaging. We pressurize the house and record the CFM50 reading before touching anything. This tells us where the CertainTeed assembly is leaking, not where we think it might be.
- 3
Written scope and price. We specify OEM CertainTeed replacement foam or a quality aftermarket equivalent, explain the difference, and give you a flat price in writing. No work starts until you have both documents.
- 4
Air sealing first, then insulation. All top plates, can lights, plumbing penetrations, and electrical chases get sealed before any foam goes in. This is non-negotiable under our standard.
- 5
Installation to spec. Open-cell to 3.5 inches minimum for R-13 at roof decks; closed-cell to 2 inches for R-14 and vapor barrier at rim joists. We photograph every stage.
- 6
Post-job blower-door test and documentation. We run the pressurization test again, print the before-and-after numbers, and file a copy by your address. You leave with the printout, the photo record, and the written warranty.
Before
AfterWhat CertainTeed Spray Foam Insulation Costs in New Braunfels
| Job Type | Typical Range | What Moves the Price |
|---|---|---|
| Attic roof deck, open-cell (1,200 sq ft) | $2,800 - $4,200 | Accessibility, existing removal, sheathing condition |
| Rim joist, closed-cell (typical 1,500 sq ft home) | $1,800 - $3,000 | Crawl space height, moisture remediation needed |
| Garage ceiling, open-cell (2-car) | $1,600 - $2,800 | Whether the garage is conditioned, duct routing |
| Full hybrid system restoration (foam + blown-in) | $4,200 - $6,400 | Extent of removal, air-sealing complexity |
These are real numbers for the New Braunfels market, based on jobs we’ve completed in neighborhoods from Old Town to Copper Ridge. The price you get in writing is the price you pay. Call (830) 243-6352 for a free written estimate.
Why New Braunfels Homeowners Call Topside Attic Insulation New Braunfels for CertainTeed Work

We’re an independent CertainTeed service provider, not a dealer, which means we evaluate your specific assembly without pushing new product. Wes Okafor and our crew have worked CertainTeed systems across the Hill Country since 2016, and we carry quality alternatives from Reflectix and other manufacturers when a hybrid repair makes more sense than matching the original line. Every job gets the 365-Day Done Right Promise, a written scope before any work starts, and a documented photo record when we leave. Our blower-door printouts are filed by address, so if you sell, the buyer’s inspector gets facts instead of guesses. The number on the blower-door printout tells you what the insulation did. Everything else is just talk.
FAQs
Manufacturer warranties typically cover original installation defects, not subsequent repairs by independent contractors. We document our work with photos and material lot numbers when available, so if a warranty claim is ever relevant, you have a complete record of what was done and when. Call (830) 243-6352 and we’ll review your specific warranty terms during the estimate.
Properly installed open-cell foam lasts 20-30 years, but the Hill Country’s thermal cycling and humidity can accelerate shrinkage at the 7-10 year mark if the original application missed substrate prep or was applied too thin. Our diagnostic finds this before it becomes a comfort problem. Call (830) 243-6352 for a free inspection.
Spot repairs run $800-$1,800 when the failure is localized to one roof plane or a few rim joist bays; full replacement starts around $2,800. We quote both options in writing so you can compare the 10-year cost. Call (830) 243-6352 for a free second opinion on any written estimate you already have.
We stock OEM-compatible open-cell and closed-cell formulations that meet the same R-value and density specs as CertaSpray OC and CC. For visible areas, we note that even matched foam will show a slight color variation for the first year due to UV exposure differences. We explain this before we start. Call (830) 243-6352 to discuss your specific repair.
Most CertainTeed repairs are scheduled within 3-5 business days of your written approval; emergency air-leak situations get same-day or next-day response. We don’t start until you have the written price and scope in hand. Call (830) 243-6352 to check current availability.
Written by Wes Okafor, Owner, Topside Attic Insulation New Braunfels at Topside Attic Insulation New Braunfels, serving New Braunfels and nearby areas.