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Crawl Space Encapsulation in Shreveport, LA
Crawl space encapsulation seals your crawl space off from damp ground and humid outside air: a heavy 20-mil vapor barrier on the floor and walls, sealed vents, and a commercial dehumidifier holding humidity near 50%. The result is a clean, dry space that protects your floors, joists, and the air you breathe. If you’re comparing crawl space encapsulation Shreveport LA companies, this guide covers what the job includes, what it costs, and how to tell if your home needs it.
If your crawl space smells musty or your floors feel damp, crawl space encapsulation stops moisture at the source. Most homes see results within days.
Call (318) 585-2003 – Free Inspection
Why Crawl Spaces in Shreveport Need Moisture Control
A surprising share of the air you breathe upstairs drifts up from your crawl space — warm air rises through your home, pulling air from below along with whatever is down there.
In Shreveport, “whatever is down there” is usually moisture. Our humid subtropical climate and Northwest Louisiana clay hold water and release it as humidity; open vents let that damp air in, where it condenses on cool surfaces — feeding mold, rotting wood, and inviting termites.
Spring storms, roughly March through May, saturate the clay around your foundation. Summer brings weeks of high humidity through open vents, condensing on cooler joists and ductwork. Even in fall and winter, damp soil feeds moisture upward. There’s no dry season for a Shreveport crawl space — just degrees of damp.
This is especially true for the pier-and-beam homes filling neighborhoods like Broadmoor, South Highlands, Highland, Shreve Island, and Cedar Grove — many built in the 1940s–1970s with vented crawl spaces. If your home sits anywhere in Shreveport (71104, 71105, 71106, 71108, 71118, 71129) and has a raised floor, the space underneath is very likely wetter than it should be.
Signs Your Shreveport Crawl Space Is in Trouble
You don’t need to go under the house to spot trouble. Watch for:
- Musty smells in the living space, especially in summer — mold or mildew growing below.
- Damp, sagging, or cupping floors. Soft spots or hardwood that cups and gaps can mean moisture has weakened the subfloor and joists.
- High indoor humidity your AC can’t fix. If the house still feels sticky with the air running, moisture is rising from below.
- Visible mold or mildew on joists, insulation, or ductwork.
- Pest activity. Termites, roaches, and rodents love damp crawl spaces.
- Rising energy bills. Wet insulation stops insulating. Your HVAC works harder to heat and cool damp air.
Mold in a crawl space isn’t just a smell problem — it breaks down wood over time and can trigger allergies and breathing trouble. In this climate, it’s a matter of “when,” not “if,” unless moisture is controlled.
Call (318) 585-2003 – Free Inspection
What’s the Difference Between Encapsulation and a Vapor Barrier Alone?
This question comes up a lot, because a basic vapor barrier is cheaper — and sometimes it’s all a contractor proposes. Here’s the honest breakdown.
A vapor barrier alone is plastic sheeting over the dirt floor. It blocks ground moisture from evaporating up — genuinely useful — but the vents stay open and the walls stay bare, so humid air keeps flowing in and condensing on cool joists and ductwork. It handles half the problem and ignores the other half.
Full encapsulation is a complete system: heavy barrier on floor and walls, every vent and gap sealed airtight, and a commercial dehumidifier holding humidity near 50%. Nothing condenses, because the moisture sources are gone.
The barrier-only approach is better than bare dirt. But if you’re paying for the work, encapsulation is what actually holds humidity near 50% through a Louisiana summer.
Crawl Space Encapsulation Shreveport LA: What’s Included in the Job
Crawl space encapsulation is a system, not a single product — every part matters.
Heavy Vapor Barrier
Our crawl space vapor barrier installation starts with a thick, puncture-resistant liner — typically 20 mil, at the heavy end of the 12-mil to 20-mil range. It covers the entire floor, runs up the foundation walls, and gets sealed at every seam. You’ll see premium liners marketed under names like CleanSpace; the spec that matters is thickness and seam sealing, not the label. This liner is the backbone: it blocks ground moisture from evaporating into the space.
Sealed Vents and Air Gaps
Every vent, pipe boot, wiring penetration, and gap gets sealed airtight — stopping the humid outdoor air that condenses on cool joists and ductwork.
Commercial Dehumidifier
A sealed crawl space in Shreveport still needs active humidity control, so crawl space dehumidifier installation is part of every system we put in: a commercial-grade unit sized for your space, holding relative humidity near 50% — below what mold needs. It drains automatically, so there’s no bucket to empty.
Sizing matters: an undersized unit runs constantly and never catches up in August; an oversized one short-cycles and wears out faster. We size by square footage and air volume, set the humidistat near 50%, and drain condensate to a pump or exterior line — never pooling under the liner.
Drainage Check First
Encapsulation handles humidity and ground moisture — not standing water. If your crawl space floods, we fix the water intrusion first, usually through drainage correction around the foundation, and add a sump pump when needed.
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Cleaner Air and Lower Energy Bills
Air quality. Rising air carries spores and musty odors from a damp crawl space into your living rooms. After encapsulation, the mold’s moisture supply disappears — and many families notice the difference in how the house smells and feels.
Energy bills. Wet insulation is failed insulation, and your HVAC pays for it. Sealed vents stop hot, humid summer air from flooding under your floors, so your air conditioner isn’t dehumidifying half of Louisiana. Most homeowners see the change on their utility bills within a couple of cooling seasons.
Is Crawl Space Waterproofing Worth It in Shreveport?
Short answer: yes, for most Shreveport homes with moisture problems. Damp joists rot, and rot leads to sagging floors and repairs that cost far more than prevention — sealing out moisture is the cheapest structural insurance a pier-and-beam homeowner can buy, and the most reliable crawl space mold prevention there is. It also helps at resale: inspectors flag wet crawl spaces fast.
Call (318) 585-2003 – Free Inspection
How Much Does It Cost to Encapsulate a Crawl Space?
Most crawl space encapsulation Shreveport LA projects are priced by crawl space size and condition after a free inspection — there’s no one-size-fits-all number. For honest context, national cost guides report full encapsulation running $1,500–$15,000, averaging near $5,000, while a vapor-barrier-only job typically runs $500–$1,500. Those are national numbers, not our quote — here’s how the options compare:
| Option | What it includes | National cost-guide range |
|---|---|---|
| Vapor barrier only | Plastic sheeting on the dirt floor | $500–$1,500 |
| Full encapsulation | Floor + wall barrier, sealed vents | $1,500–$15,000 (avg ~$5,000) |
| Add a dehumidifier | Active humidity control, auto-drain | ~$1,000–$3,500 installed |
In Shreveport’s humidity, the middle option alone rarely holds — without a dehumidifier, a sealed space can still trap moisture through a Louisiana summer.
Some guides quote $3–$10 per square foot for full encapsulation — useful for ballparking, though fixed costs like the dehumidifier mean small crawl spaces run higher per foot.
What moves your price:
- Crawl space size. A 1,200-square-foot footprint costs less than a 2,500-square-foot one — more barrier, more labor, bigger dehumidifier.
- Condition underneath. Mold treatment, insulation removal, or debris cleanup add cost. If the wood is already damaged, crawl space repair comes first.
- Standing water. Drainage problems get fixed first — encapsulating over a flooding crawl space doesn’t work.
- Access. Tight, hard-to-reach spaces take more labor time.
Every home is different, which is why inspections are always free: we crawl the space, photograph what we find, and give you a written quote — no pressure, no obligation. For comparison, our crack repairs run $400–$1,500 and full pier jobs run $3,500–$15,000+, so encapsulation sits right in the middle of typical foundation work.
What Does Structural Crawl Space Repair Entail?
Sometimes the wood underneath is already damaged — rotted joists, beams, or sill plates, or old piers that have settled. Structural repair comes first: replacing or sistering lumber, installing new steel support posts where needed. Once the structure is sound, we encapsulate so moisture never causes the same damage again.
Call (318) 585-2003 – Free Inspection
What Maintenance Does an Encapsulated Crawl Space Need?
Less than you’d think — but not zero:
- Check the dehumidifier yearly. Clean the filter and confirm the condensate drain stays clear.
- Keep water moving away from the house. Clean gutters, working downspouts, and soil that slopes away from the foundation protect everything under the liner.
- Look for liner damage. A torn seam from a service tech’s boot is rare but worth catching — a quick patch or vapor barrier replacement section keeps the system airtight.
- Termite inspections get easier. Everything is bright, dry, and visible.
For background reading between visits, the LSU AgCenter’s moisture guidance is a solid, Louisiana-specific reference on how crawl space moisture works in our climate.
How Long Does an Encapsulated Crawl Space Last?
A properly installed crawl space encapsulation system lasts 20 to 25 years or more — the liner doesn’t wear out under normal conditions. Dehumidifiers last 10 to 15 years and can be replaced on their own. What makes the difference is installation quality: sealed seams, sealed vents, a right-sized dehumidifier, and drainage handled first. Qualifying structural work carries our 20-year structural warranty, in writing before we start.
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Our Encapsulation Process: What Happens on the Job
No surprises, no sales theater. Here’s how a typical project goes:
- Free inspection. We crawl your space, photograph everything, and check humidity and wood moisture — readings in the high teens tell us rot is starting even when the wood looks fine.
- Written quote. One price for the complete system, every line item explained. No surprises.
- Prep work. Old, soggy insulation comes out — crawl space insulation removal is part of nearly every job we do in older Shreveport homes — along with debris and any water sources. Mold treatment or wood repair happens here if the moisture meter says it’s needed.
- Installation. Barrier down and sealed at every seam, vents closed, dehumidifier installed and set. Most jobs take 2–4 days.
- Final walkthrough. We show you the finished space, explain the settings, and hand you the warranty paperwork.
Frequently Asked Questions
Is crawl space encapsulation a scam?
No — but it’s an industry with real red flags, so the skepticism is healthy. Sealing out moisture and holding humidity near 50% is straightforward physics. It becomes a ripoff when a company skips the drainage check, installs an undersized dehumidifier, or quotes over the phone without crawling the space. Our rule: any quote that doesn’t start with someone physically under your house is a guess, not a quote.
Will encapsulation fix my musty smell?
In most cases, yes — within days. The musty smell comes from mold and mildew feeding on moisture, and once the space is sealed and dried, growth stops and the odor fades.
Does encapsulation lower energy bills?
Usually. Wet insulation loses most of its R-value, and humid air is harder to cool. A dry, sealed crawl space lets your HVAC do its job.
What about termites?
Encapsulation doesn’t replace termite treatment, but it removes the moisture termites need. Dry wood is far less attractive to them, and pest inspectors prefer encapsulated spaces because everything is visible and accessible.
Can I DIY crawl space encapsulation?
You can, but most Shreveport homeowners shouldn’t. A proper job means hauling heavy liner through a tight crawl space, sealing every vent and penetration airtight, sizing and wiring a commercial dehumidifier, and handling mold or drainage first — typically 40-plus hours of miserable work. The DIY jobs we get called to fix failed the same two ways: an undersized dehumidifier that never catches up in August, and unsealed seams — the kits, plastic, and tape sold online skip the airtight sealing at every penetration that makes the system work. Get the free inspection first — at minimum, you’ll know what your space needs.
How long does installation take?
Most homes take 2 to 4 days from prep to final walkthrough. Larger or badly damaged crawl spaces can take longer — we’ll put the timeline in your written quote.
Can I still get under my house after encapsulation?
Yes. We leave the access opening in place, and the 20-mil liner is tough enough to walk on for occasional trips. Just take care around the sealed seams and the dehumidifier drain line.
Does encapsulation come with a warranty?
Our qualifying structural work carries a 20-year structural warranty, and we’ll put the exact coverage in writing with your quote before any work begins.
Do you offer free inspections in Bossier City and surrounding areas?
Yes — Shreveport plus Bossier City, Blanchard, Greenwood, Keithville, Benton, Stonewall, Haughton, Red Chute, Eastwood, Mooringsport, Minden, and Ruston. Every inspection is free, and every quote is in writing.
Call (318) 585-2003 – Free Inspection
Get a Free Crawl Space Inspection
If your crawl space smells musty, your floors feel damp, or your humidity won’t quit, let’s take a look. We provide crawl space encapsulation Shreveport LA homeowners can count on: a free inspection and an honest quote — no pressure.
Call Pelican Foundation Repair at (318) 585-2003 — Monday through Friday, 7:00 to 6:00, or Saturday, 8:00 to 2:00. Or email contact@foundationrepairshreveport.com anytime.
A dry crawl space is a healthy home. Let’s make yours one.
Pelican Foundation Repair 6118 Fairfield Ave, Shreveport, LA 71106, USA 318-585-2003 https://foundationrepairshreveport.com/