Demilec Insulation Removal & Replacement Nationwide

Demilec Insulation Removal & Replacement in Seguin: What to Know First

As an independent Demilec service provider, we remove and replace Demilec spray foam and hybrid insulation systems in Seguin homes, typically completing attic and wall cavity jobs in one to two days with a written price locked in before any work starts. Most Demilec removal and replacement jobs we see in Seguin run between $3,800 and $8,500 depending on cavity depth, contamination level, and whether the existing foam has degraded or been compromised by roof leaks or rodent activity. This page is for homeowners who know they have Demilec product in their walls or attic and need it out safely, replaced with material that performs, and documented with before-and-after numbers they can verify.

Call (830) 549-6646

Call (830) 549-6646 to speak with a live person - no voicemail loop - and we’ll schedule a free estimate with a written scope.

How Demilec Products Fail - and How We Fix Them

• Demilec Heatlok HFO Pro shrinkage in Seguin’s temperature swings. The Hill Country’s 40-degree daily temperature swings in shoulder seasons stress HFO-based closed-cell foams. We’ve pulled Heatlok HFO Pro that’s pulled away from rafter bays in homes near Guadalupe Regional Medical Center, creating convection loops that bypass the R-value entirely. We remove the shrunken foam mechanically, verify substrate moisture content stays below 18 percent, then replace with a dimensionally stable alternative specified to the cavity depth.
• Demilec Sealection 500 water absorption after roof leaks. Open-cell foam is vapor-permeable by design, but once it’s saturated from a compromised shingle or flashing, it holds moisture against studs and sheathing. In Seguin’s humid spring months, we’ve found Sealection 500 that’s gained 15 to 20 percent moisture by weight, far past the point where drying in place is realistic. We cut it out, treat the cavity with antimicrobial where framing warrants it, and replace with closed-cell or a vented assembly depending on the roof deck configuration.
• Demilec Heatlok XT off-gassing and odor retention. Older Heatlok XT batches installed during the 2015-2018 building boom in Seguin neighborhoods like Willow Creek can develop a persistent amine odor if the A-B component ratio drifted during installation or if the substrate was too cold for full cure. We remove the affected foam, ventilate the cavity with forced air for 48 hours, and replace with fresh material only after substrate temperature and humidity read in spec.
• Demilec Agribalance degradation in agricultural-adjacent properties. Seguin’s rural edges - areas northeast of town toward Kingsbury - see higher ammonia and particulate loads from nearby operations. Agribalance, marketed for agricultural buildings, can break down at the surface when exposed to sustained high ammonia environments combined with attic heat. We remove the degraded layer, assess whether the substrate needs sealing, and specify replacement material rated for the actual environmental load.
• Demilec open-cell dust accumulation and compression. Demilec’s open-cell products in vented attics without proper air sealing underneath collect dust over years, gradually compressing and losing loft. We’ve measured original 5.5-inch thickness compressed to 3 inches in Seguin homes built in the early 2010s. We remove the compressed material, seal the attic floor properly - top plates, wire penetrations, can lights - then replace with fresh blown-in or new foam, depending on the homeowner’s performance target and budget.

Our Demilec Insulation Removal & Replacement Process

1. 1
   Call and scheduling. A live person answers, confirms your Demilec product type if you know it, and books a site visit. We text when Wes or your assigned technician is en route.
2. 2
   On-site diagnostic and blower-door test. We run a blower-door test - a pressurization reading that shows, in one number, how much air your building envelope is losing - then inspect the Demilec installation for shrinkage, moisture, odor, or compression. We photograph everything and record substrate conditions.
3. 3
   Written price and scope. Under Haven Standard Clause 1, you get a flat price, written scope, and written warranty before anyone lifts a tool. No exceptions. We also offer a free second opinion on any competing written estimate.
4. 4
   Removal and cavity prep. We remove the Demilec product mechanically, never with solvents that compromise adjacent materials. Cavity moisture and temperature are verified in spec before replacement begins.
5. 5
   Replacement and air sealing. We seal first - top plates, penetrations, electrical boxes - then install replacement insulation. Materials come from Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, or GreenFiber, selected for your assembly and performance target, not our inventory convenience.
6. 6
   Final blower-door test and documentation. We run the blower-door again, hand you a printed pre- and post-installation report with the actual ACH50 numbers, and deliver your Documented Photo Record. The report goes home with you - the numbers do the talking.

Before

After

What Demilec Insulation Removal & Replacement Costs in Seguin

These ranges reflect what we’ve written for Seguin-area jobs since 2016. Your exact price depends on what we find in your cavity - call (830) 549-6646 for a free estimate with a written scope.

Why Seguin Homeowners Call Topside Attic Insulation Seguin for Demilec Work

We’ve removed and replaced Demilec product in Seguin homes since before the 2019 building code changes, and we’ve learned what the Hill Country climate does to each Demilec line over time. Wes Okafor runs a blower-door test on every applicable job - it’s how we prove the air sealing worked, not just how we claim it. The 365-Day Done Right Promise applies to all completed work, and our materials include Demilec itself plus Reflectix and other brands, so we’re specifying for your assembly, not pushing inventory.

Every job closes with a Documented Photo Record and, where applicable, printed blower-door numbers. Calls are answered by a live person 24/7. Background-checked, uniformed technicians. No voicemail loops.

FAQs