Demilec Blown-In Insulation Nationwide

Demilec Blown-In Insulation in Boerne: What to Know First

We provide independent Demilec blown-in insulation service in Boerne, with most attic jobs completed in one day and written pricing delivered before any work starts. Most full attic installations run between $2,400 and $4,800 depending on square footage, existing insulation condition, and whether air sealing is needed first. We’re not affiliated with Demilec - we work on their products as an independent service provider - which means we source parts based on what actually fixes the problem, not what a manufacturer program requires.

Call (830) 529-7780

This page is for homeowners in Boerne who have a Demilec insulation system and need blown-in cellulose, fiberglass, dense-pack wall work, or a top-up. Call (830) 529-7780 for a free estimate with written pricing.

How Demilec Products Fail - and How We Fix Them

• Demilec SEALECTION 500 open-cell spray foam shrinkage in cathedral ceilings. In Boerne’s Hill Country climate, the wide temperature swings between January nights and August afternoons cause this open-cell foam to pull away from rafter edges over 8-12 years. We see this in homes near the Cibolo Nature Center, where 2005-2015 builds used SEALECTION heavily. Our fix: remove the compromised foam, seal the gaps with closed-cell at critical junctions, then blow in cellulose to the full R-38 depth so the assembly breathes properly.
• Demilec Heatlok Soya HFO settled in attic floors below labeled R-value. The soy-based binder in this closed-cell product can break down in sustained attic heat above 140°F, common in Boerne homes with dark shingles and minimal ventilation. The material compacts, leaving 4-6 inch gaps at eaves. We remove the settled material, seal top plates and can lights, then blow in fresh cellulose to a uniform depth with depth markers every 100 square feet.
• Demilec 500 Demi-Fill dense-pack wall cavities that never achieved original density. Demi-Fill requires exact hose pressure and cavity-fill rate; installer error leaves voids that show up as cold stripes on infrared. In Boerne’s older homes near Main Street, we’ve found cavities at 2.5 lbs/ft³ instead of the specified 3.5. We re-drill, test density with a core sample, and repack to spec.
• Demilec Eco-Por polyurethane top-coat delamination from substrate. When used as a flash-and-batt base layer, Eco-Por can separate from OSB roof sheathing if the substrate wasn’t properly dried during Boerne’s spring humidity spikes. Moisture gets trapped, mold follows. We remove the failed layer, dry the sheathing to 12% moisture content, seal with a vapor-smart alternative, then blow in fiberglass to maintain drying potential.
• Demilec recycled-content blown-in cellulose with fire-retardant salt crystallization. The borate treatment in Demilec’s cellulose line can leach and recrystallize on attic surfaces in homes with roof leaks or bathroom fan discharge into soffits - more common in Boerne than homeowners realize. It looks like white dust, reads as settled material on visual inspection. We identify the moisture source, fix it, remove compromised insulation, and reinstall with proper ventilation baffles.

Our Demilec Blown-In Insulation Process

1. 1
   Call and scheduling. A live person answers. We book a site visit, usually within 48 hours. You get a text when Wes Okafor or your assigned technician is en route.
2. 2
   Attic inspection and blower-door test. We pressurize the house and measure CFM50 - the single number that shows how much conditioned air your envelope is losing. In Boerne, pre-work readings on 1990-2010 homes typically run 3,500-5,500 CFM50.
3. 3
   Written scope and price. Before any work starts, you receive a flat price, written scope, and written warranty. Haven Standard Clause 1: no surprises.
4. 4
   Air sealing first. Top plates, can lights, plumbing and electrical penetrations, chimney chases. Seal the envelope first. Then fill it. We don’t blow insulation over an unsealed attic floor.
5. 5
   Blown-in installation. Cellulose, fiberglass, or dense-pack per scope. Depth markers, uniform coverage, proper baffling at soffits. We also work with Reflectix and other brands if your project calls for hybrid assemblies.
6. 6
   Post-work blower-door test and documentation. Second pressurization reading, printed pascal differential report, photo record of completed work. You keep the paperwork.

What Demilec Blown-In Insulation Costs in Boerne

These are real ranges for Boerne homes we’ve worked on, not teaser prices. The only way to pin your number is a site visit, which is free. Call (830) 529-7780 for a written estimate.

Why Boerne Homeowners Call Topside Attic Insulation Boerne for Demilec Work

We’ve sealed and insulated over 9,000 homes since 2016, every one with a written price before work started and a documented record when the crew left. Our 365-Day Done Right Promise means if it’s not right, we make it right - backed by paperwork, not a handshake.

Wes Okafor runs blower-door tests before and after every applicable job, then hands you a printed pressure-differential report in pascals. He learned the trade at Olive-Harvey College’s building technology program and has spent eighteen years figuring out why buildings leak. In Boerne’s Hill Country climate, that diagnostic rigor matters: stack-effect air leakage in older homes near the Cibolo Nature Center was eroding cooling bills before a single batt went in.

We source materials from Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber - no proprietary lock-in. If Demilec isn’t the right product for your fix, we’ll tell you and use what is.

FAQs