Owens Corning Crawl Space Encapsulation & Vapor Barrier Nationwide

Owens Corning Crawl Space Encapsulation & Vapor Barrier in Boerne: What to Know First

We provide independent Owens Corning crawl space encapsulation and vapor barrier service in Boerne, with most jobs completed in one to two days and pricing set in writing before any work starts. A typical crawl space encapsulation in the Hill Country runs between $4,200 and $8,500 depending on square footage, existing moisture damage, and whether the foundation needs active dehumidification. This page is for Boerne homeowners who already have Owens Corning materials in their crawl space or are comparing Owens Corning systems against what their home actually needs. Call (830) 529-7780 for a free estimate with a written price delivered before we lift a tool.

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How Owens Corning Products Fail - and How We Fix Them

• Owens Corning Foamular NGX 250 below-grade boards losing adhesion. In Boerne’s clay-heavy soils around the Cibolo Creek watershed, the freeze-thaw cycle between January mornings and April afternoons works the board edges loose from foundation walls. We’ve pulled Foamular NGX 250 sheets that were hanging by a corner after two seasons. We re-secure with mechanical fasteners and a compatible adhesive, then seal the seams with Owens Corning joint tape rather than generic foil tape that delaminates in high humidity.
• ProPink Loose Fill insulation sagging in vented crawl spaces. Owens Corning ProPink blown into floor joist cavities settles when seasonal humidity in Boerne climbs past 65 percent, which it does from May through October. The R-value drops before the insulation shows visible sag. We remove the settled material, install a proper vapor barrier on the crawl floor first, then re-insulate with a product suited to encapsulated conditions.
• EnergyComplete spray foam shrinking at rim joists. Owens Corning EnergyComplete, the two-part closed-cell system, can pull away from rim joists in older Boerne homes built before 1990 when the wood moisture content fluctuates. The gap is usually hairline at first, then grows to a measurable air leak. We cut back the failed section, let the wood stabilize, and reapply with a compatible substrate primer that Owens Corning specifies but some installers skip to save time.
• Moisture barrier seams failing on Owens Corning 6-mil poly. The standard 6-mil polyethylene vapor barrier that comes with some Owens Corning crawl packages separates at the seams when crawl space traffic or rodent activity stresses the tape. In Boerne, where limestone outcroppings can puncture thin poly, we upgrade to a 12-mil reinforced liner with polyester scrim and double-seam weld the joints.
• Insulated duct wrap condensation in non-encapsulated crawls. Owens Corning SOFTR duct wrap installed around flex duct in a vented crawl space becomes a condensation surface when the dew point hits, which in Boerne happens on any morning below 65 degrees with ground moisture present. The fiberglass traps water against the duct jacket. We encapsulate the crawl first, then replace any water-damaged wrap with a mold-resistant facing specified for conditioned-space applications.

Our Owens Corning Crawl Space Encapsulation & Vapor Barrier Process

1. 1
   Site survey and moisture mapping. We measure relative humidity at three points in the crawl, photograph existing Owens Corning materials, and note any standing water or foundation cracks. You get a Documented Photo Record before we start.
2. 2
   Blower-door and pressure-differential testing. We run a blower-door test on the living space to quantify how much conditioned air is being pulled through the crawl floor - the stack effect that Wes Okafor has documented in older homes near the Cibolo Nature Center. The reading goes on paper in pascals.
3. 3
   Written scope and price. We specify OEM or quality aftermarket materials, line-item what stays and what comes out, and give you a flat price. No work starts without a signed scope under Haven Standard Clause 1.
4. 4
   Removal, remediation, and air sealing. We pull failed Owens Corning materials, treat any mold-affected framing with an EPA-registered cleaner, and seal all penetrations between crawl and living space with fire-rated caulk and expanding foam.
5. 5
   Encapsulation and insulation install. We lay reinforced vapor barrier, seam-weld the joints, install rigid insulation on foundation walls, and add mechanical dehumidification if the load calculation warrants it.
6. 6
   Final test and documentation. We re-run the blower door, hand you the before-and-after pressure readings, and deliver your written warranty. The 365-Day Done Right Promise starts when we leave.

What Owens Corning Crawl Space Encapsulation & Vapor Barrier Costs in Boerne

Most Owens Corning crawl space encapsulations we complete in Boerne fall between $4,200 and $8,500. A 1,200-square-foot crawl with sound existing structure, no active water intrusion, and standard 12-mil vapor barrier with wall insulation typically lands near the lower end. Price moves up with square footage, need for sump pump or dehumidifier installation, removal of water-damaged Owens Corning materials, and foundation wall repairs.

We also service Reflectix radiant barrier systems when they’re part of a crawl or attic assembly, though Owens Corning remains the primary brand we encounter in Boerne homes built between 2005 and 2020.

Every estimate is free, every price is written, and every job includes the photo record. Call (830) 529-7780 to schedule.

Why Boerne Homeowners Call Topside Attic Insulation Boerne for Owens Corning Work

We’re independently owned and operated, not a franchise, and we don’t carry proprietary product lines that lock you into one manufacturer. Our crews have worked Owens Corning systems across the Hill Country since 2016, and we source materials from Owens Corning, Johns Manville, Knauf, Rockwool, and others so the solution fits the house, not the supplier.

The Haven Standard governs every job: written price before work starts, background-checked uniformed technicians, a live person answering calls 24/7, and the 365-Day Done Right Promise backed by documentation you can hold in your hand. We’ve sealed and insulated more than 9,000 homes, and we publish before-and-after blower-door numbers so you see the performance change, not just the invoice.

Wes Okafor’s signature phrase around here: “Seal the envelope first. Then fill it.” That order matters in Boerne’s climate, where air leakage will undo any insulation job if it’s not handled first.

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