Prototype build — Greene Group Construction Corp, Nassau & Suffolk County HI License #HI-72958
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Home / Basement & Crawl Space
BELOW-GRADE SPECIALISTS

Basement & Crawl Space Cleanup

Below-grade spaces on Long Island flood differently than a living room does — from groundwater and hydrostatic pressure as often as a plumbing failure. We treat the cause, not just the puddle.

WHY IT'S DIFFERENT HERE

A high water table changes the job

Long Island's aquifer sits close to the surface across much of Nassau and Suffolk, so a basement or crawl space can take on water through the foundation and slab even without a storm event, especially after heavy or sustained rain. That means drying alone doesn't solve the problem — without a drainage or vapor-barrier fix, the same space floods again.

What we assess

  • Source: groundwater intrusion vs. plumbing vs. surface runoff
  • Sump pump condition and drainage capacity
  • Vapor barrier presence and integrity
  • Structural moisture in framing and subfloor above
FAQ

Basement & crawl space questions

My basement floods every heavy rain. Is that covered by insurance?

Usually not under a standard policy — recurring seepage and groundwater intrusion are typically treated as a maintenance issue, not a sudden covered loss. A sump pump or water-backup endorsement can add coverage for some of these events; ask your agent whether your policy has one.

Do I need encapsulation or just drying?

Depends on the source. A one-time storm event with no groundwater issue may only need extraction and drying. A recurring moisture problem usually needs a vapor barrier or drainage correction, or the mold and rot come back.

Wet basement or crawl space?

We'll find the source before we start pumping.

Call (631) 555-0142