Demilec Insulation Removal & Replacement Nationwide

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

We provide independent Demilec insulation removal and replacement in Tustin, typically completing most jobs in one to two days with a written price locked before any work starts. Most attic insulation removal and replacement jobs in Tustin run between $2,800 and $5,400 depending on square footage, contamination level, and whether the Demilec product was part of a prior retrofit or original build. We do not offer phone estimates - Haven Standard Clause 1 requires a flat, written price and scope before anyone lifts a tool.

Call (657) 286-7673

This page is for homeowners in Tustin, Tustin Legacy, and the surrounding Orange County area who have Demilec insulation in their attic or walls and need it removed - whether due to rodent damage, moisture degradation, failed spray foam, or pre-renovation prep. If you’re seeing sagging open-cell foam, crumbling closed-cell material, or insulation compressed by years of storage traffic, we can assess it and give you a written scope. Call (657) 286-7673 to schedule.

How Demilec Products Fail - and How We Fix Them

• Demilec SEALECTION 500 open-cell spray foam shrinkage in Tustin Legacy attics. We see this in post-2005 builds where SEALECTION 500 was applied to roof decks during the original construction. In Tustin’s dry-summer climate, thermal cycling between 95°F attic peaks and 55°F winter lows causes the open-cell matrix to pull away from rafter bays, creating a convection channel that bypasses the R-value entirely. We remove the failed foam mechanically, seal the rafter bays with closed-cell foam or dense-pack cellulose depending on the roof assembly, and run a blower-door test - pressurizing the house to 50 pascals to measure air leakage in CFM50 - before and after.
• Demilec Heatlok Soya HFO closed-cell moisture trapping in older Tustin ranch homes. When Heatlok Soya HFO is applied too thick in a single pass (a common shortcut during the 2012-2018 retrofit boom), the exothermic reaction locks in solvent vapor. Over years, this creates a hard, cracked shell with wet substrate behind it. We’ve pulled sections where the OSB sheathing was reading 28% moisture content on a pin meter. Our fix: full removal with cold-knife cutting, sheathing assessment, drying period with documented moisture logs, then reapplication to manufacturer-pass thickness in lifts.
• Demilec 500 Demi-Flex batt compression in Tustin townhome attic floors. The Demi-Flex line - a cotton-denim flexible batt - was marketed for friction-fit applications but performs poorly when homeowners or storage contractors walk it flat. Compressed Demi-Flex drops from labeled R-13 to effective R-6 or lower. We remove the compacted batts, air-seal top plates and wire penetrations with acoustic sealant and rigid foam, then replace with blown-in fiberglass or mineral wool that doesn’t depend on loft recovery.
• Demilec APX closed-cell delamination from galvanized ductwork in Tustin’s coastal-influence zone. Within five miles of the Pacific, salt air accelerates oxidation on galvanized metal. APX spray foam applied directly to aging duct jackets loses adhesion as the metal surface degrades, creating a gap where condensation forms. We strip the foam, treat or replace the duct jacket, then reapply with a compatible primer - or switch to a mechanically fastened duct wrap if the substrate is too far gone.
• Demilec Eco-Pur blown-in cellulose settling above Tustin’s original lathe-and-plaster ceilings. Eco-Pur cellulose was installed in some 1960s Tustin ranch retrofits, and it settles differently over rigid plaster than over modern drywall. We’ve found 40% volume loss in some attics, leaving a bare strip along the ceiling peak. We vacuum out the settled material, inspect for plaster cracks that became air leaks, seal with fire-rated caulk, then reinstall to a consistent depth with depth markers and a written R-value report - R-38 in the attic, per 2022 California Energy Code.

Our Demilec Insulation Removal & Replacement Process

1. 1
   Site visit and written scope. We walk the attic or crawl space, identify the Demilec product line by visual inspection and density testing where needed, and photograph the current condition. You get a flat price and written scope before we leave - no work starts without it, per Haven Standard Clause 1.
2. 2
   Blower-door baseline. On applicable jobs, we pressurize the house and record the CFM50 reading. In Tustin Legacy homes with conditioned attics, this number typically runs 3,500-5,500 CFM50 before any work begins.
3. 3
   Controlled removal. We match the removal method to the Demilec product - mechanical shaving for spray foam, HEPA vacuum for loose fill, bagged extraction for contaminated batts. Negative air machines run continuously during removal.
4. 4
   Substrate repair and air sealing. With the insulation out, we seal top plates, can lights, chimney gaps, and all penetrations. This is non-negotiable - we will not install new insulation over an unsealed envelope. Seal the leaks first. Then insulate. The R-value on the bag means nothing if conditioned air is moving through the gap around that recessed can.
5. 5
   Replacement and verification. We install the replacement insulation - Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, or GreenFiber, whatever the scope specifies - and run a post-work blower-door test. The before-and-after numbers go in your documented record.
6. 6
   Cleanup and documentation. You receive a Documented Photo Record, the blower-door readings, and the written warranty under our 365-Day Done Right Promise. Wes Okafor reviews every packet before it leaves the office.

Before

After

What Demilec Insulation Removal & Replacement Costs in Tustin

These are real numbers for Tustin’s market - not teaser rates. Every estimate includes disposal, PPE, and the Documented Photo Record. If you have a written estimate from another contractor, bring it. We’ll read it with you as a free second opinion. Call (657) 286-7673 for an exact quote - estimates are free.

Why Tustin Homeowners Call Topside Attic Insulation Tustin for Demilec Work

We’re an independent Demilec service provider - not affiliated with or authorized by the manufacturer - which means we work across product lines without proprietary lock-in. If your job is better served by Reflectix radiant barrier, Rockwool batts, or Johns Manville blown-in, we’ll say so and show you the blower-door math.

Our 365-Day Done Right Promise covers all completed work. Calls are answered by a live person 24/7, not a callback queue. Our technicians are background-checked, uniformed, and trained on Demilec’s specific density profiles and failure signatures. Since 2016, we’ve sealed and insulated 9,000+ homes - every one with a written price first and a documented record at the end. In Tustin Legacy, where post-redevelopment housing stock made blower-door testing a baseline step rather than an afterthought, that documentation matters when you sell or refinance.

FAQs