Twin Fork Waterproofing

Phone(631) 749-5900

AddressNo street address published on its own website

YearsTrusted by Long Island's East End since 1983; 40+ years on the East End; locally trusted from Montauk to Riverhead since 1983

RatingNot stated

LicenseNot published on its own website

FocusBasement waterproofing and foundation repair

Based inEast End, Long Island, NY (service area)

Services (as stated on its own website)

East End in general, from Montauk to Riverhead; testimonials from East Hampton and Southampton

Service-area company: no street address is published on its main page opened. A Shelter Island Heights address from directories is NOT used as an own-site fact.
LIMITATION VERIFIED 2026-11-03: its main page does not name interior drainage, French drain or sump pump systems by name, and a search of its own site found no internal page naming them. This profile therefore does NOT present it as an interior-drainage or sump-pump specialist; drainage systems appear only in directory descriptions and are not used here.
Shelter Island is NOT named on its main page opened. Directory text saying it serves the North and South Forks and Shelter Island is not an own-site fact and is not used here.
License: no number on its own site. Claims only, including a mold-remediation contractor license and a lead-safe certified firm status. A mold-remediation license is NOT a waterproofing license and is never presented as one.
No rating with a count on its main page opened; only award mentions. A directory rating is not used here.
No price is seen on its own page opened. A free-evaluation offer appears in directories, not on its own page opened.
Possible duplicate note: this phone number also appears as another phone for Mildew Busters in directory records, suggesting a possible duplicate or rebrand, not a second independent candidate. Mildew Busters is not listed separately.
This guide describes only water control, dryness and structural protection for this company.