New York homes experience heavy rain, snow, snowmelt and freeze-thaw cycles, and coastal communities face storm surge. These conditions can contribute to basement seepage, foundation moisture and water entering through cracks or joints.
Waterproofing coverage in New York currently includes 118 communities, grouped below by area. Each community page explains local conditions and the waterproofing services pros commonly provide there.
Central Nassau County
Central Nassau sits on the Hempstead Plain and the outwash plain south of the moraine: flat, sandy ground that drains quickly in most places.
- Albertson
- Bethpage
- Carle Place
- East Meadow
- Elmont
- Farmingdale
- Floral Park
- Franklin Square
- Garden City
- Hempstead
- Hicksville
- Jericho
- Levittown
- Lynbrook
- Malverne
- Mineola
- New Hyde Park
- Old Bethpage
- Plainview
- Rockville Centre
- Roosevelt
- Syosset
- Uniondale
- Valley Stream
- West Hempstead
- Westbury
- Williston Park
- Woodbury
Central Suffolk County
Central Suffolk spans the Ronkonkoma moraine and the sandy outwash plain south of it, and its soils are among the fastest-draining on Long Island.
- Bohemia
- Brentwood
- Centereach
- Central Islip
- Commack
- Coram
- Deer Park
- Farmingville
- Hauppauge
- Holbrook
- Holtsville
- Huntington Station
- Islandia
- Islip Terrace
- Lake Grove
- Medford
- Melville
- Nesconset
- North Babylon
- Ronkonkoma
- Selden
- Wyandanch
Nassau County's South Shore
The South Shore borders the bays and canals behind the barrier beaches, and its ground sits only a few feet above high tide in many places.
- Atlantic Beach
- Baldwin
- Bellmore
- Cedarhurst
- East Rockaway
- Freeport
- Hewlett
- Inwood
- Island Park
- Lawrence
- Long Beach
- Massapequa
- Massapequa Park
- Merrick
- Oceanside
- Point Lookout
- Seaford
- Wantagh
- Woodmere
Suffolk County's South Shore
Suffolk's South Shore faces the Great South Bay and Moriches Bay, with canals, creeks and marsh running behind many neighborhoods.
- Amityville
- Babylon
- Bay Shore
- Bayport
- Blue Point
- Brightwaters
- Copiague
- East Islip
- Great River
- Islip
- Lindenhurst
- Oakdale
- Patchogue
- Sayville
- West Babylon
- West Islip
- West Sayville
Nassau County's North Shore
The North Shore sits on the Harbor Hill moraine, the ridge of glacial debris left at the end of the last ice age, so many lots slope steeply toward the harbors and the Sound.
- Bayville
- East Norwich
- Glen Cove
- Glen Head
- Glenwood Landing
- Great Neck
- Greenvale
- Locust Valley
- Manhasset
- Mill Neck
- Old Westbury
- Oyster Bay
- Port Washington
- Roslyn
- Roslyn Heights
- Sea Cliff
Suffolk County's North Shore
The North Shore of Suffolk rises onto the Harbor Hill moraine, with rolling hills, steep bluffs and deep harbors such as Huntington, Northport, Stony Brook and Port Jefferson.
- Centerport
- Cold Spring Harbor
- East Northport
- East Setauket
- Greenlawn
- Huntington
- Kings Park
- Miller Place
- Mount Sinai
- Northport
- Port Jefferson
- Port Jefferson Station
- Saint James
- Smithtown
- Stony Brook
Fire Island
Fire Island is a barrier island, and its communities sit on dune sand only a few feet above the bay.
Common Needs for Waterproofing in New York
Across these areas, the most frequent requests are listed below. Each links to a detailed explanation.
- Interior Basement Waterproofing
- Exterior Foundation Waterproofing
- Sump Pump Installation
- French Drain and Yard Drainage
- Leaking Foundation Crack Repair
- Crawl Space Encapsulation
- Gutters, Downspouts and Grading
- Basement Humidity Control
- Backwater Valves and Sewer Backup Protection
Questions to Ask Before You Hire
- Ask the contractor to explain where the water is coming from and why.
- Get a written scope that names the system, its length, the sump and the discharge location.
- Ask how the system will be maintained and what any warranty covers and excludes.
- Check licensing and insurance requirements for your town or county.
- Get more than one opinion for large projects.