Demilec Wall Insulation in Boerne: What to Know First
We provide independent Demilec wall insulation service in Boerne, with most injection foam and drill-and-fill jobs completed in one day and a written price delivered before any work starts. Our crews carry Demilec-compatible materials and understand the specific failure patterns of the Heatlok HFO High Lift and Sealection 500 series that were common in Hill Country builds from 2012 to 2019. If you’re seeing drafts through exterior walls, uneven room temperatures, or rising cooling bills in a home with existing Demilec foam, call (830) 529-7780 for a free estimate with upfront pricing.
How Demilec Products Fail - and How We Fix Them
- Heatlok HFO High Lift shrinkage in stud cavities. This closed-cell formulation can pull away from framing members in Boerne’s wide temperature swings, especially on south and west walls where daily thermal cycling is most extreme. We diagnose this with thermal imaging, then inject compatible open-cell foam to fill the voids without disturbing the original application.
- Sealection 500 odor complaints after incomplete curing. The water-blown chemistry in this open-cell line requires precise substrate temperature and humidity conditions during installation. In older Boerne homes near the Cibolo Nature Center, we’ve found crews who applied it during high-humidity windows, leaving residual amine odor. We remove the affected material and reapply with proper environmental controls documented.
- Heatlok XT adhesive failure on OSB sheathing. When the substrate wasn’t properly cleaned or when incompatible primer was used, the foam delaminates from the sheathing and creates a convection channel. We cut back to sound material, re-prep with manufacturer-specified primer, and reinstall to full depth.
- Sealection Agribalance degradation from pest intrusion. The bio-based content in this line can attract rodents if the exterior envelope has gaps. We seal the entry points first, remove contaminated foam, and replace with a synthetic alternative where the homeowner prefers.
- Demilec retrofit injection foam settling in balloon-framed walls. Pre-1980s Boerne homes with continuous stud bays from foundation to attic often show 15-20% settlement of injected foam over five to seven years. We use a two-stage injection with higher initial density, then verify fill with borescope inspection at mid-height and top plate.
Our Demilec Wall Insulation Process
- 1
Call and scheduling. A live person answers, 24/7. We book a diagnostic visit with a named technician and text you when they’re en route.
- 2
On-site assessment and blower-door test. We pressurize the home to measure envelope leakage in CFM50, then use thermal imaging and borescope inspection to locate voids, delamination, or settlement in your Demilec walls.
- 3
Written scope and price. Before any work starts, you receive a flat price, written warranty terms, and a documented photo record of what we found. This is Haven Standard Clause 1: no surprises.
- 4
Air sealing first, then insulation. We seal top plates, electrical penetrations, and any envelope gaps before adding material. Seal the envelope first. Then fill it.
- 5
Material selection and installation. We match Demilec-compatible foam or, where appropriate, recommend Reflectix or another brand if the original formulation has known issues for your specific wall assembly. We never lock you into a proprietary product.
- 6
Verification and documentation. We run a post-work blower-door test and hand you the before-and-after readings in pascals, plus your photo record and warranty paperwork. The 365-Day Done Right Promise applies from this moment.
What Demilec Wall Insulation Costs in Boerne
Most Demilec wall insulation jobs in Boerne fall in these ranges:
| Scenario | Typical Range |
|---|---|
| Drill-and-fill injection foam, single-story 1,800 sq ft home | $3,200 - $4,800 |
| Partial remediation, Heatlok HFO shrinkage, 2-3 walls | $1,800 - $2,900 |
| Sealection 500 removal and reapplication, odor remediation | $4,500 - $6,200 |
| Interior wall soundproofing, open-cell, per wall | $850 - $1,400 |
What moves the price: wall cavity depth, accessibility (stucco vs. siding), whether existing material must be removed, and the extent of air sealing required beforehand. We don’t quote by phone without seeing the job. Call (830) 529-7780 for a free estimate with a written price before any work starts.
Why Boerne Homeowners Call Topside Attic Insulation Boerne for Demilec Work
We’ve sealed and insulated 9,000+ homes since 2016, and a growing share of our Boerne calls involve Demilec foam that didn’t perform as expected. Wes Okafor learned the trade at Olive-Harvey College’s building technology program and has spent eighteen years understanding why insulation fails in specific wall assemblies, not just how to install it. Our crews carry Demilec-compatible materials alongside Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, and GreenFiber options, so we recommend what fits your wall, not what we have a quota to move. Every job closes with a Documented Photo Record and, where applicable, printed blower-door results. If something’s not right, the 365-Day Done Right Promise means we make it right.
FAQs
Demilec’s original installation warranty covers defects in material and application by the original contractor; it does not extend to subsequent modifications or repairs by other parties. As an independent Demilec service provider, we document our work with photos, material batch numbers, and written scope so you have a clear record of what was done and when. For warranty questions on your original installation, we recommend contacting the installing contractor directly. Call (830) 529-7780 if you need help interpreting your paperwork.
We stock Demilec-compatible foams with equivalent density and R-value, and we can source OEM material when the job specifically requires it. In many Boerne homes, we find that a different formulation solves the original failure mode more reliably, for instance switching from a shrinkage-prone closed-cell to a stable open-cell in certain wall assemblies. We explain the trade-off and let you decide. Call (830) 529-7780 for a free second opinion on any written estimate you’ve already received.
Repair is viable when the failure is localized, voids are under 30% of cavity volume, and the remaining foam is well-adhered. Full removal and replacement makes sense when there’s widespread delamination, chemical odor from incomplete cure, or pest contamination. We determine this with thermal imaging, borescope inspection, and adhesion testing, not guesswork. Call (830) 529-7780 for a diagnostic visit and written recommendation.
Most diagnostic visits are scheduled within 48 hours of your call. Once you approve the written scope and price, work typically begins within 3-5 business days, weather permitting, since foam application requires substrate temperatures above 40°F and moderate humidity. In Boerne’s spring and fall shoulder seasons, we sometimes have next-day availability. Call (830) 529-7780 to check current scheduling.
You get a Documented Photo Record of all work areas, your written scope and warranty, and on applicable jobs, the before-and-after blower-door test results in CFM50 and pascals. This is standard on every visit, not available on request. Haven Standard: Have it in writing. Call (830) 529-7780 to schedule your free estimate.
Written by Wes Okafor, Owner, Topside Attic Insulation Boerne at Topside Attic Insulation Boerne, serving Boerne and nearby areas.