Home of the $0 FREE Service Call Club | 0% Interest for 24 Months

Home of the $0 FREE Service Call Club | 0% Interest for 24 Months

Home of the $0 FREE Service Call Club | 0% Interest for 24 Months

Advanced Crawl Space Encapsulation for Charleston & Summerville Homes.

Stop mold, wood rot, and rising energy bills. Our specialized vapor barriers and dehumidification systems are built to withstand Lowcountry humidity and coastal flooding

Rapid Response

5-Star rated

20+ years local

Licensed & Insured

Musty Odors?

If you smell it in your living room, it's coming from your crawl space. We eliminate odors at the source.

Sagging Floors?

High humidity weakens wooden floor joists. Encapsulation protects your home's structural integrity.

High Humidity?

Charleston's 80%+ humidity breeds mold. We keep your under-home environment below 60% relative humidity.

A technician kneels next to an old, rusty outdoor air conditioning unit, using gauges to check the system. The unit is placed on a concrete pad beside a brick house.

Why Lowcountry Homes Require a Specialized Moisture Barrier.

Living in the Lowcountry presents a unique architectural challenge. Because of our high water table and specific geological makeup, your crawl space is more than just a storage area—it is an environmental engine that dictates the health of your entire home.

  • The South Carolina “Clay Soil” Trap: Unlike the sandy soils of the coast, much of Summerville and West Ashley sits on dense, South Carolina red clay. This soil acts like a sponge, retaining groundwater long after a storm has passed. This moisture sits directly against your wooden floor joists, creating a constant “vapor drive” that leads to structural wood rot and sagging floors.

  • The “Stack Effect” (Your Home’s Breathing Cycle): Many homeowners don’t realize that up to 50% of the air you breathe in your living room originates in your crawl space. Due to a physical phenomenon called the Stack Effect, warm air rises and escapes through your attic, creating a vacuum that pulls damp, mold-spore-laden air from the crawl space up through your floorboards and into your lungs.

  • Neutralizing the Threat: By fully encapsulating your crawl space with a 20-mil vapor barrier and a dedicated dehumidification system, we break the cycle of the Stack Effect. We transform your home’s underside from a damp breeding ground for “Dirty Sock Syndrome” into a clean, dry, and conditioned environment that protects both your family’s health and your home’s resale value.

Why is My Heat Pump Blowing Cold Air in Charleston?

Mold & Mildew Growth

We use antimicrobial treatments to kill biological growth on floor joists.

Mil Vapor Barrier

A heavy-duty, puncture-resistant shield that blocks ground moisture forever.

Pest & Rodent Infestations

Rodents love damp dark spaces. Encapsulation creates a physical pest-proof seal.

Smart Dehumidification

Sized specifically for Charleston humidity to maintain crisp, dry air.

Wood Rot & Cupping Floors

Excess moisture causes expensive hardwoods to warp and buckle.

Wood Rot & Cupping Floors

Excess moisture causes expensive hardwoods to warp and buckle.

High Energy Bills

An unsealed crawl space forces your AC to fight damp air, increasing utility costs.

Energy Efficient Sealing

Sealing vents prevents the "tug-of-war" between your HVAC and the SC heat.

Common Charleston Heating Questions

Typically between $5,000 and $15,000, depending on square footage, existing mold levels, and whether a sump pump or French drain is needed for groundwater management.

We install an "Inspection Gap" (a clear strip at the top of the liner) so pest control companies can easily inspect for termite mud tubes, keeping your bond fully intact.

Yes. Due to our local dew points, a vapor barrier alone isn't enough to prevent condensation on your ductwork. A dedicated SaniDry or equivalent dehumidifier is essential.

Rapid Heating Response Across the Lowcountry.

From our headquarters in Summerville, SC, Coastal Carolina Comfort deploys technicians throughout Dorchester, Charleston, and Berkeley Counties. whether you are dealing with a frozen heat pump in Goose Creek, a furnace failure in West Ashley, or salt corrosion on Isle of Palms, our local team is minutes away.

Dorchester County

  • Summerville

  • Knightsville

  • Oakbrook

Charleston County

  • Charleston (Downtown/Peninsula)

  • West Ashley

  • James Island

  • Johns Island

  • Mount Pleasant

Coastal Islands

  • Isle of Palms

  • Sullivan’s Island

  • Folly Beach

  • Daniel Island

Berkeley County

  • Goose Creek

  • Ladson

  • Hanahan

  • Moncks Corner

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