Demilec Wall Insulation Nationwide

Demilec Wall Insulation in Newport Beach: What to Know First

We provide independent Demilec wall insulation service in Newport Beach, with most jobs scheduled within 48 hours and completed in a single day. A typical drill-and-fill or injection foam job on a 1,800-square-foot home runs $2,800 to $4,600, and we deliver a written price before anyone lifts a tool. This page is for homeowners who already have Demilec product in their walls and need to add, replace, or troubleshoot that insulation, whether you’re in a 1960s ranch off MacArthur Boulevard or a newer build in Newport Coast. Call (657) 261-8265 for a free estimate and a written scope.

Call (657) 261-8265

How Demilec Products Fail - and How We Fix Them

• Heatlok HFO Pro shrinkage in coastal wall cavities. The HFO blowing agent in this closed-cell series can contract 3-5% over the first two heating seasons, leaving visible gaps at stud bays in Newport Beach’s mild but variable climate. We diagnose this with boroscope inspection, then inject compatible Demilec Heatlok XT as a touch-up fill or recommend full removal if the gap pattern exceeds 15% of the cavity volume.
• Demilec SEALECTION 500 density loss in exterior walls facing the Pacific. The salt-laden onshore airflow accelerates moisture cycling in south- and west-facing walls, particularly above the first floor where wind pressure is highest. We find this by comparing moisture meter readings cavity-to-cavity; our fix is targeted injection of Heatlok HFO High Lift at 2.0 lb/ft³ minimum, with a vapor retarder assessment for walls that see direct marine exposure.
• Demilec 500 open-cell water absorption in ground-floor walls. This older open-cell line was specified for interior sound control but sometimes ended up in exterior walls where bulk water intrusion - think failed deck flashing at the Balboa Peninsula’s tighter lot lines - saturates the foam. We remove the degraded material mechanically, dry the cavity with targeted airflow, then reinstall with closed-cell product specified to the actual wall function.
• Demilec Eco-Pur adhesion failure on stucco substrates. The water-based acrylic interface Demilec specified for certain stucco applications in the 2012-2016 period can delaminate when applied over previously painted or sealed surfaces common in Corona del Mar renovations. We strip to substrate, apply a mechanical fastening pattern for the new foam, and document the prep with photos per our Haven Standard.
• Heatlok XT off-ratio curing from original install errors. When the A- and B-side components were mis-metered during initial installation - more common in the 2015-2018 rush period - the foam remains tacky or develops a crumbly “cheese” texture. We core-sample suspect areas, confirm with FTIR testing if needed, then remove and reinstall to Demilec’s published density spec, with before-and-after blower-door numbers to prove the envelope tightened.

Our Demilec Wall Insulation Process

1. 1
   Call and scope. A live person answers, schedules a site visit, and sends a text with your technician’s name and ETA.
2. 2
   Diagnostics and blower-door baseline. We pressurize the house to measure current air leakage - a blower-door test, which gives us one number for how much conditioned air is escaping before we touch anything. In Newport Beach’s older stock, we often see 3,500-5,500 CFM50 on homes built before 1980.
3. 3
   Boroscope inspection and material identification. We verify which Demilec line is in your walls, its condition, and whether the original install was to spec. This determines if we’re adding, patching, or removing.
4. 4
   Written price and material selection. You get a flat price, written scope, and written warranty before work starts - Haven Standard Clause 1. We specify OEM Demilec product or a compatible alternative from our multi-brand inventory, with the trade-offs explained in plain language.
5. 5
   Air sealing first, then insulation. We seal top plates, electrical penetrations, and any bypasses before adding material. Seal the leaks first. Then insulate. The R-value on the bag means nothing if the air is moving freely around it.
6. 6
   Install, test, document. We run a post-work blower-door test, deliver before-and-after numbers, and leave you with a Documented Photo Record of every cavity accessed. The 365-Day Done Right Promise applies from sign-off.

Before

After

What Demilec Wall Insulation Costs in Newport Beach

Most Demilec wall insulation jobs in Newport Beach fall in these ranges:

• Drill-and-fill injection foam (interior walls, 1,200-2,000 sq ft home): $2,800-$4,200
• Exterior wall injection with stucco repair (single-story): $4,500-$7,200
• Partial cavity remediation (one or two problem walls): $1,800-$3,400
• Full removal and replacement of failed open-cell product: $5,500-$9,800

What moves the price: wall finish type (drywall patch vs. stucco match), cavity accessibility, whether we need to scaffold for second-story work, and the extent of air sealing required before injection. We also carry Reflectix and other brands if your project benefits from a hybrid approach. Every estimate is free, written, and delivered before any work starts - call (657) 261-8265 to schedule.

Why Newport Beach Homeowners Call Topside Attic Insulation Newport Beach for Demilec Work

We’ve sealed and insulated over 9,000 homes since 2016, and a growing share of our wall work involves diagnosing and correcting existing Demilec installations - not just adding new product. Wes Okafor, who learned the trade through the HVAC and Building Sciences program at Olive-Harvey College in Chicago, trained our crew to read a wall cavity the way a mechanic reads an engine bay: identify the material, trace the failure mode, fix the root cause. We don’t sell proprietary product lock-in - our materials come from Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, GreenFiber, and Reflectix - so the specification matches your wall, not our inventory. The 365-Day Done Right Promise, the written price before work starts, and the documented photo record on every visit are non-negotiable. Calls are answered by a live person 24/7.

FAQs