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Crawl Space Encapsulation

Crawl space encapsulation for Louisiana humidity

Vented crawl spaces pull humid air in and grow moisture, mold, and rot — the DOE says so. Encapsulation seals them dry and can cut energy use up to 20%.

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Crawl space encapsulation in Monroe & Northeast Louisiana

Plenty of Northeast Louisiana homes — especially older and raised, pier-and-beam houses common in flood-aware country — sit over a vented crawl space. In our humid climate, that space is often the single biggest source of a home’s moisture, comfort, and energy problems. Encapsulation seals it against the humidity that damages homes here, and it’s some of the most impactful work we do.

Why vented crawl spaces fail in a humid climate

The old idea was that crawl-space vents let moisture escape. In a climate like ours, the Department of Energy found the opposite happens: the warm, humid outside air that enters through those vents is more likely to condense on the cooler crawl-space framing than to dry it out, and vented crawl spaces “have experienced serious moisture and mold problems.” With about 50 inches of rain a year and summer overnight lows near 75°F, the air pulled into your crawl space is loaded with moisture much of the year.

The results are familiar under older homes here: a musty smell that drifts upstairs, sagging and fallen fiberglass, damp or rotting wood, rusted ductwork, and the mold that thrives on all of it. Because air moves from the crawl space up through the house, much of what you breathe upstairs started down below.

What the DOE found: Sealed and insulated crawl spaces can deliver up to 20% in heating and cooling energy savings while “substantially reducing the risk of moisture problems,” staying cooler and drier through the summer. Encapsulation isn’t just a moisture fix — it pays back in comfort and energy, too.

How we encapsulate a crawl space

  • Seal the vents and outside air so humid air stops entering.
  • Insulate the crawl-space walls with closed-cell foam — about R-6 per inch, and a moisture barrier as well as insulation.
  • Install a heavy vapor barrier across the ground to stop moisture rising from the soil.
  • Address standing water or drainage so the sealed space stays dry — especially important in flood-aware areas.
  • Condition the space so it becomes part of your home’s controlled environment rather than a damp cavity beneath it.

The result is a clean, dry, usable space that protects your floors and framing, improves the air upstairs, and cuts the energy your HVAC wastes fighting crawl-space humidity. Call (318) 702-1058 for a free crawl-space assessment.

The same standard on every job

Whatever brought you to this page, the way we work doesn’t change. You get a free, no-pressure quote and a real explanation of your options before any commitment — no mystery pricing and no scare tactics. We recommend the foam your project actually needs, not whatever’s most profitable, and we install it to manufacturer specification and to code, because foam applied at the wrong thickness or over a dirty surface won’t perform. Every building-science, climate, and code figure we cite traces to an authoritative public source listed below — the DOE, ENERGY STAR, FEMA, NOAA, or the IECC — and you can verify our standing with the Louisiana State Licensing Board for Contractors before you hire us.

One more thing worth saying plainly: spray foam is a product a lot of homeowners don’t fully understand, which makes it easy to oversell — and the trade has a reputation for exactly that. We don’t work that way. If your project only needs open-cell where a competitor would push closed-cell, we’ll tell you. If a job genuinely isn’t worth doing, we’ll say so rather than sell you something you don’t need. That honesty is the whole point of how we run this business, because a home in this climate is a long-term relationship, not a one-time sale. And we’ll leave you understanding your home better than we found you, explaining what’s happening in plain language and why a given approach matters, so whether you act now or plan for later, you’re deciding with real information rather than a sales pitch. Call (318) 702-1058 for a free look at your project.

Sources & references

Every climate, code, and efficiency figure on this page traces to a public, authoritative source. We do not publish statistics we cannot cite.

  1. DOE Building America — Unvented Crawlspaces — https://www.energy.gov/sites/prod/files/2014/01/f6/4_3c_ba_innov_unventedcrawlspaces_011713.pdf
  2. DOE / CARB (Steven Winter Assoc.) — Which Spray Foam Is Right For You? — https://www1.eere.energy.gov/buildings/publications/pdfs/building_america/spray_foam_guide.pdf
  3. Monroe, LA climate summary (annual precipitation, temperatures) — https://en.climate-data.org/north-america/united-states-of-america/louisiana/monroe-16956/
  4. ENERGY STAR — Why Seal and Insulate — https://www.energystar.gov/saveathome/seal_insulate/why-seal-and-insulate
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