Skip to content

Nationwide · all 50 states

Book an inspection
Holdfast Basement Waterproofing

Service area · Charleston County, SC

Basement waterproofing in Charleston, SC

Charleston's peninsula sits barely above sea level between the Ashley and Cooper rivers. Tidal flooding, storm surge, high groundwater and humidity mean that crawl spaces, drainage and moisture, not deep basements, drive most foundation-area work here.

By calling, you agree to be connected with an independent waterproofing contractor, who may call or text you back about your request at the number you call from. Calls may be recorded for quality and routing. Consent is not a condition of any purchase; you can opt out at any time, and message and data rates may apply. Privacy policy.

Neighborhoods
South of Broad, Wagener Terrace, West Ashley, Hampton Park

Charleston: call now

(833) 460-4463

By calling, you agree to be connected with an independent waterproofing contractor, who may call or text you back about your request at the number you call from. Calls may be recorded for quality and routing. Consent is not a condition of any purchase; you can opt out at any time, and message and data rates may apply. Privacy policy.

What kind of homes and basements does Charleston have?

South of Broad and Elliotborough have 18th- and 19th-century homes, many raised; Wagener Terrace and Hampton Park have early 20th-century homes on crawl spaces; West Ashley and James Island are mostly crawl space and slab.

What causes basement and foundation problems in Charleston?

Tidal flooding

King tides and storms flood low streets and crawl spaces on the peninsula.

Crawl space moisture

Humidity and groundwater keep crawl spaces wet; vapor barriers and dehumidifiers help.

Settlement in soft soils

Soft coastal soils let piers settle unevenly.

Historic masonry

Old brick foundations need lime-compatible repairs.

Flood vents and code

Homes in flood zones often need flood vents in crawl space walls so water can pass through without pushing walls over. Encapsulation plans must keep these working.

Which basement services do Charleston homeowners need most?

Also available in Charleston: sump pump service, leaking crack repair, and every service on our full list of 19 basement services.

Who serves Charleston, and how does a call work?

Neighborhoods
South of Broad, Wagener Terrace, West Ashley, Hampton Park, James Island, Elliotborough
County / state
Charleston County, South Carolina

What do Charleston homeowners ask most?

Why is there water under my Charleston house?

Tidal flooding, groundwater and storm runoff can all reach low crawl spaces. Grading, a perimeter drain and sump, and a vapor barrier are common fixes.

Who licenses home repair contractors in South Carolina?

The Residential Builders Commission for residential builders and specialty contractors above its threshold.

Does the historic district limit foundation work?

Exterior changes in Charleston's historic districts may need review by the Board of Architectural Review; interior work is usually less restricted.

Can a Charleston crawl space be encapsulated in a flood zone?

Often yes, but flood vents required by code must stay functional. A contractor familiar with local floodplain rules can design a system that works with them.

Where can I verify this information about Charleston, SC?

  1. 1FEMA: Flood Map Service CenterCheck whether a property in Charleston, SC is in a mapped flood zone before finishing a basement.
  2. 2U.S. Environmental Protection Agency: MoldGuidance on moisture control and keeping indoor humidity low to prevent mold.
  3. 3USDA Natural Resources Conservation Service: Web Soil SurveyLook up soil drainage class and shrink-swell potential for any lot in Charleston, SC.
  4. 4U.S. Environmental Protection Agency: RadonWhy basements in Charleston, SC should be tested for radon, and how sealed sumps fit with mitigation.
  5. 5Federal Trade Commission: Hiring a ContractorWhat to check before hiring: licensing, insurance, written estimates and payment terms.

What should Charleston homeowners read before calling?

Which areas near Charleston are covered?

Need a waterproofing contractor in Charleston?

By calling, you agree to be connected with an independent waterproofing contractor, who may call or text you back about your request at the number you call from. Calls may be recorded for quality and routing. Consent is not a condition of any purchase; you can opt out at any time, and message and data rates may apply. Privacy policy.

Call nowBook an inspection