Demilec Spray Foam Insulation Nationwide

Demilec Spray Foam Insulation in Schertz: What to Know First

We provide independent Demilec spray foam insulation service in Schertz, typically scheduling within 24-48 hours and completing most jobs in a single visit. Most residential spray foam repairs in this market run between $850 and $2,400 depending on cavity access and whether we’re matching existing Demilec open-cell density or transitioning to closed-cell for rim joist work. We don’t quote over the phone without seeing the job, but we do put a written price in your hand before any work starts - that’s Haven Standard Clause 1, no exceptions.

Call (830) 402-5240

This page is for Schertz homeowners who’ve found Demilec product in their walls, attic, or rim joists and need to know whether it can be repaired, supplemented, or safely removed and replaced. If you’re seeing shrinkage gaps, off-gassing odors, or moisture retention in a Demilec application, call (830) 402-5240. A live person answers, 24/7.

How Demilec Products Fail - and How We Fix Them

• Heatlok HFO Pro shrinkage at roof decks in Schertz’s 140°F attics. The high solar heat load in Sedona subdivision homes and others off FM 1518 can accelerate thermal cycling stress on closed-cell HFO formulations, causing pull-back from rafter edges that creates convection channels. We cut back to sound foam, re-prime with Demilec-compatible adhesive, and reapply to match original density - then verify with thermal imaging.
• Heatlok Soy 200 Plus open-cell moisture retention in crawl spaces. This bio-based open-cell line is hydrophilic by design; when installed below grade without proper vapor management, it wicks groundwater vapor and loses R-value while supporting mold substrate. We remove compromised sections, install a proper vapor barrier first, then specify closed-cell replacement - never open-cell in ground-contact applications.
• Demilec Sealection 500 overspray and density inconsistency in wall cavities. Older Sealection jobs sometimes show “drift” - areas where the installer moved too fast and left 0.5-lb density patches alongside proper 0.5-1.0-lb specification zones. We core-sample to map the inconsistency, then either spot-fill with matching open-cell or recommend full-cavity refoam if the thermal bridge pattern is too distributed.
• Demilec APX closed-cell delamination from OSB roof sheathing. The APX line’s aggressive adhesion can backfire when applied to moisture-laden OSB during original construction; the foam grips, then the sheathing moves seasonally and the bond fails. We test substrate moisture content first, mechanically scarify the failed interface, and reapply only when readings drop below 19% - with a documented photo record of the moisture log.
• Off-ratio curing from aging Demilec A-side or B-side drums in long-stored inventory. Schertz homeowners occasionally inherit leftover product from a previous contractor’s stock, and iso/polycol ratios drift past manufacturer spec after 12+ months in Texas heat. We don’t attempt to “save” off-ratio foam - it’s a removal and replacement with fresh, date-verified material, with batch numbers logged in your job file.

Our Demilec Spray Foam Insulation Process

1. 1
   Call and schedule. A live person answers at (830) 402-5240, 24/7. We book a site visit, not a guess.
2. 2
   Blower-door test and thermal imaging. We pressurize the house and run a FLIR scan to see where the Demilec foam is actually performing versus where it’s leaking. You get the CFM50 number before we touch anything.
3. 3
   Written price before any work starts. We specify OEM Demilec or quality third-party match, explain the trade-off, and hand you a flat price with scope and warranty in writing - Haven Standard Clause 1.
4. 4
   Air-seal first, then foam. Seal the leaks first. Then insulate. The attic doesn’t care how thick the insulation is if the air is still moving through it. Top plates, can lights, penetrations - sealed before a single board foot goes in.
5. 5
   Install with documented depth and density verification. Core samples or in-situ readings depending on the Demilec line; photo log of depth sticks and thermal imaging confirmation of continuity.
6. 6
   Post-job blower-door test and documentation packet. New CFM50 reading, printed thermal summary, depth-stick photo log, and your 365-Day Done Right Promise in writing. We leave the documentation, not just a receipt.

What Demilec Spray Foam Insulation Costs in Schertz

These are real numbers for Schertz homes we’ve worked - the Sedona subdivision builds, the older stock near I-35 and FM 3009, the post-2015 construction with original Demilec specs. Your job may land outside these ranges if we’re dealing with structural modification or hazardous material encapsulation. Call (830) 402-5240 for a free estimate; we read competing quotes with you as part of our Free Second Opinion.

Why Schertz Homeowners Call Topside Attic Insulation Schertz for Demilec Work

We’ve been working the Schertz corridor long enough to know which Demilec batches were installed during the 2018-2021 building boom and what failure patterns to expect from them. Wes Okafor and the crew don’t guess at foam density - we core-sample, we match, we document. The 365-Day Done Right Promise means if the repair doesn’t hold, we make it right without a new negotiation. Every technician is background-checked and uniformed; you get a text when we’re en route, not a four-hour window.

We’re also not locked to one brand. We source from Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, GreenFiber, and Reflectix - so if your Demilec application is better served by a different product for the repair zone, we’ll say so and show you the data. No proprietary lock-in. Just the right material for the specific failure mode in your specific house.

FAQs