Key facts: Claymont
- Claymont is a census-designated place in New Castle County with 9,895 residents in 2020 [1].
- The community started on the banks of Naamans Creek where it empties into the Delaware River [1].
- Claymont grew with a railroad station built in 1838 and later developed industry including a steel mill and a chemical plant [1].
- Ready.gov advises never walking or driving through floodwater [2].
Covered area
Claymont addresses this page covers
The Claymont ZIP code is covered by the contractor network behind this site. It takes in the community along the Delaware River at the state's northern tip, between the Pennsylvania line and the northern edge of Wilmington's suburbs. Calls from Claymont addresses connect with an independent restoration contractor who works in the area.
Coverage in Delaware is limited to northern New Castle County. The nearest other covered area is Wilmington, with ten ZIP codes. If your address is outside the covered ZIP codes, look for a local restoration company directly.
History
How Claymont grew, and what that left in its houses
Claymont's story begins at Naamans Creek, where people lived along both banks long before European settlement [1]. Under colonial rule the area grew with gristmills and farms, and later lumber mills, a steel mill and a chemical plant [1]. John Grubb bought land here in 1681, an area that became known as Grubb's Landing, and the settlement called Naamans was renamed Claymont in 1856 [1].
The Philadelphia, Wilmington and Baltimore Railroad opened a station in Claymont in 1838, and the area turned from farms into a suburban resort for wealthy Philadelphia families, then into an industrial working community in the early twentieth century [1]. Subdivisions such as Claymont Addition, Brookview, Worthland and Woodstream Gardens followed [1]. Since the mid-1990s, revitalization has renovated historic sites and redeveloped older housing [1].
For water damage, that history means a mix: some old stone and frame buildings from the village and resort years, many modest mid-century houses on slabs or with basements, and apartment and townhouse complexes from later decades.
Common calls
What Claymont residents call about most
Burst pipes in cold snaps
Pipes in exterior walls and slab utility rooms freeze; see burst pipe water damage.
Apartment leaks from above
One unit's leak soaks the unit below.
Basement seepage
Older foundations take on groundwater in long rains.
Water heater and washer failures
Utility closets and laundry rooms in slab houses.
Storm-driven roof leaks
Wind off the river drives rain under shingles and around windows.
Drain backups
Floor drains and low fixtures; see sewage backup cleanup.

River and creek
Naamans Creek, the Delaware River and storm water
Claymont sits on the Delaware River, which forms much of the state's eastern edge, and Naamans Creek runs through the community to the river. Homes close to the creek and the low riverfront sit closest to the water, and heavy rain can raise the creek quickly. Most of Claymont, though, sits above the river on gently rising ground, and its water damage comes from storms, groundwater and plumbing rather than river flooding.
Coastal storms called nor'easters, most frequent from November through March, bring strong northeast winds and long rains to the river shore [3]. Wind-driven rain is the main problem: it gets under shingles, around older windows and through masonry, and shows up as stains on ceilings and walls on the windward side of a house. Summer thunderstorms and tropical remnants bring short, heavy rain that overwhelms gutters and storm drains.
If you live near Naamans Creek or the riverfront, check your property's flood risk in DNREC's online flood planning tool [4].
Mid-century homes
Water damage in Claymont's mid-century houses
Many Claymont neighborhoods were built in the middle of the twentieth century: ranch houses, Cape Cods and small two-stories, some on slabs, many with basements. Original plumbing in these homes is often well past half a century old. Galvanized supply pipes corrode from the inside and leak at threaded joints; old shutoff valves seize and fail to close when needed.
In slab houses, the water heater and washer often sit in a utility closet or laundry room on the main floor, so when they fail, water runs straight across hallways and into bedrooms. In basement houses, the same failures soak the basement floor.
Replacing old supply lines, washer hoses and water heaters before they fail is the single most useful prevention step in these homes.
- Aging galvanized supply lines
- Main-floor utility closets
- Replace old hoses and heaters

Claymont water sources
Common water damage sources in Claymont homes
| Source | Where it shows up | Usual response |
|---|---|---|
| Frozen pipe burst | Exterior walls, slab utility rooms | Extract, open walls, dry |
| Water heater failure | Utility closet or basement | Extract and dry; replace heater |
| Washer hose burst | Laundry room and nearby rooms | Extract and dry |
| Apartment leak from above | Ceilings and walls | Coordinate with management; dry both units |
| Wind-driven rain | Windward walls and ceilings | Dry; roof and window repair |
| Groundwater seepage | Basement floor and walls | Extract, dehumidify; drainage fix |
Apartments
Water damage in Claymont apartments and townhouses
Claymont has a large share of apartment and townhouse housing, including redeveloped complexes. In these buildings a single leak rarely stays in one home. A toilet supply line that fails on an upper floor wets the unit below; a frozen sprinkler line in a stairwell can affect a whole building; a clogged roof drain can send water into several top-floor units.
Tenants should report leaks to management right away, in writing, and photograph damage to their own belongings for renters insurance. Management usually arranges building restoration. In townhouse and condominium communities, the association may be responsible for roofs and some plumbing, and each owner works with their own insurer for their own unit.
Drying in multi-unit buildings needs access to every affected unit. A wall or ceiling that is dried from one side only is not finished.
A Claymont job
How a water damage job in a Claymont home usually runs
- 1
Shut off the water
In slab homes the main is often near the water heater or in a utility closet.
- 2
Check electrical safety
Utility closets put water heaters, washers and panels close together.
- 3
Extract
Water is removed from floors in every affected room.
- 4
Pull baseboards and toe kicks
So air can reach walls and under cabinets.
- 5
Remove what cannot be dried
Carpet pad, soaked insulation and wet lower drywall.
- 6
Dry and measure
Dehumidifiers and air movers with regular readings.
- 7
Coordinate
With a plumber, and with management in a multi-unit building.
Slab floors
When water spreads across a slab house
In a house on a concrete slab, there is no basement to collect water, so it spreads across the main floor instead: under carpet, under laminate and vinyl, into closets and under baseboards. Slab floors hide water under flooring for a long time, because concrete releases it slowly and the flooring above blocks evaporation.
Drying a slab house often means pulling carpet back, lifting floating floors to dry the slab beneath, and running dehumidifiers for several days. Moisture readings on the slab and in the bottom of the walls show when drying is finished. Structural drying explains how that works.
Older buildings
Older stone and frame buildings near Claymont's village core
A few buildings from Claymont's village and resort eras survive, including historic sites renovated since the 1990s such as the Claymont Stone School and the Darley House [1]. Older houses near the original core may have stone foundations, plaster walls and wood floors, and their basements are typically damp-prone.
Water damage in these buildings calls for slower, careful drying of plaster and old wood, and attention to lead paint and asbestos before materials are disturbed. EPA's lead-safe rules apply to paid renovation work in homes built before 1978 [6].
Before help arrives
First steps for a Claymont homeowner or tenant
- Shut off the waterFixture valve or main shutoff.
- Tell management if you rentLeaks in multi-unit buildings affect neighbors.
- Turn off power to wet areasOnly from a dry location.
- Move belongings off wet floorsElectronics, rugs, papers.
- PhotographEvery wet area and damaged item.
- Call your insurerHomeowners or renters, as applies.
Flood insurance
Flood coverage near Naamans Creek and the river
Flooding from creeks, the river and surface water is typically excluded from standard homeowners and renters policies and covered only by separate flood insurance. The Delaware Department of Insurance has consumer information on flood coverage [7]. Homes near Naamans Creek and the low riverfront are the ones where the question matters most, and DNREC's flood planning tool can show a property's flood risk [4].
Plumbing failures, such as burst pipes and water heater leaks, are a different matter and are commonly handled under homeowners policies when sudden. Read your policy and ask your insurer.
Prevention
Lowering water damage risk in Claymont homes
Replace aging supply lines, washer hoses and water heaters before they fail. Put a drain pan under the water heater and a water alarm beside it. Insulate pipes in exterior walls and keep heat steady in cold snaps. Keep gutters clear, and check windows and flashing on the windward side of the house after big storms. In basement homes, extend downspouts and keep stored items off the floor.
Related pages
Other pages Claymont residents often need
For first steps, see what to do after water damage. For water categories, see water damage categories explained. For insurance, see working with your insurance adjuster. Nearby covered areas include Wilmington and Hockessin.
Industrial past
Claymont's industrial land and what it means for homeowners
Claymont's history includes a steel mill and a chemical plant along the river [1], and parts of the old industrial land have been the focus of redevelopment. For a homeowner dealing with water damage, the practical point is simple: floodwater and runoff from low-lying areas near the river and old industrial sites should be treated as contaminated, and porous materials soaked by it should generally be removed rather than cleaned. EPA's flood cleanup guidance recommends discarding porous items soaked by floodwater that cannot be cleaned and dried [8].
For most Claymont homes, which sit well above the river, this is a background consideration. Water damage there comes from plumbing failures, storms and groundwater, and the usual approach of extraction, drying and selective removal applies.
Townhouse rows
Leaks that cross between attached townhouses
Townhouse rows share walls, and some share roofs and plumbing chases. A leak in one home can show up in the next: water running down inside a shared wall, a roof leak at a joint between two units, or a laundry overflow that soaks under the party wall. Restoration in attached homes means finding where the water actually went, which often requires checking the neighbor's side.
Talk to your neighbors early, and let the association know if roofs or exterior walls are involved. Each owner usually works with their own insurer for their own home, and contractors need access to both sides of a shared wall to dry it properly. Keep notes of who you told and when.
Kitchens and baths
Bathroom and kitchen leaks in Claymont's older homes
Bathrooms in mid-century houses often still have original tile set in mortar over wood subfloors, and tub and shower valves that have been patched over the years. A slow leak behind a tub surround or under a toilet can soak the subfloor for months, then show up as a soft floor, loose tile or a stain on the ceiling below. Kitchens have the same pattern under the sink and behind the dishwasher.
These slow leaks need more than drying. Once a subfloor has been wet for months, it may be soft, stained or rotted, and the contractor may recommend cutting out and replacing a section. Mold on the underside of the subfloor is also common. Our mold prevention page explains what happens when growth is found.
Questions to ask
What to ask a contractor about a Claymont job
- Can you dry a slab floor without tearing it all out?Often carpet can be pulled back and floating floors lifted, rather than removing everything.
- Do you coordinate with apartment management?Important in multi-unit buildings.
- How will you check the unit or home next door?Water often crosses shared walls.
- Will you check for long-term leaks under bathrooms?Slow leaks damage subfloors.
- Do you follow lead-safe practices?For homes built before 1978.
Basements
Claymont basements in long rains
Many Claymont houses with basements were built with block foundations and a simple floor drain, sometimes without a sump. In long, soaking rains, the soil around the foundation fills with water and pushes it through the block and along the joint at the bottom of the wall. The result is often a thin sheet of water across the floor rather than a deep flood, but it is enough to soak carpet, boxes and the bottoms of paneling or drywall.
Cleanup is extraction, removal of anything porous that soaked through, and steady dehumidification. Because block holds water in its hollow cores, a basement may need several days of drying even after the floor looks dry. Afterward, gutters, downspout extensions and grading that slopes away from the house are the first things to check; if water still comes in regularly, a waterproofing contractor can discuss interior drainage and a sump. Flooded basement cleanup explains the steps.
Commuter homes
Leaks in homes that sit empty during the workday
Claymont's location on the rail line and close to I-95 makes it a commuter community, and many homes sit empty for ten hours or more each weekday. A washer hose that bursts at 9 a.m. or a water heater that splits after the morning showers can run all day before anyone gets home. Simple water alarms beside the washer, water heater and under the kitchen sink, especially the kind that send a phone alert, turn an all-day flood into a quick fix. Turning off the washer valves when the machine is not in use is another easy habit.
Drying timelines
How long drying usually takes in a Claymont home
A clean-water leak caught the same day in a Claymont slab house often dries in three to five days once equipment is set up, though concrete floors under flooring and wet plaster or paneling can stretch that. Basement jobs with block walls usually take longer. The finish line is set by moisture readings, not by the calendar: wet materials are dried until they match the readings from unaffected areas of the same materials. Our drying guide explains what speeds it up and what slows it down.
Renovated homes
Water damage in Claymont's renovated and redeveloped housing
Revitalization since the 1990s has renovated many older Claymont buildings and replaced some older housing with new construction [1]. Renovated homes often combine new finishes with old structure: new laminate floors over original subfloors, new kitchens on old supply lines, or modern bathrooms over decades-old drain pipes. When a leak happens, the new finishes may hide old problems underneath.
If you bought a renovated home, find out what was replaced and what was not, especially the supply lines, drain lines and water heater. When restoration opens a wall or floor after a leak, take the chance to look at what is behind it, and photograph it for your records. Newer construction has its own common issues, such as fittings that were not fully tightened or caulk joints that open up in the first years, and these usually show up early as small leaks.
Seniors and safety
Help for older Claymont residents after water damage
Claymont has many long-time residents, and water damage can be especially hard on older homeowners: heavy wet carpet, slippery floors, damp air and the disruption of equipment running for days. Do not try to lift soaked rugs or furniture alone, and keep walkways clear of hoses and cords. If someone in the home has breathing problems, ask the contractor about containing the work area, and consider staying with family while drying equipment runs. A trusted relative or neighbor can help keep track of photos, paperwork and calls to the insurer.
Records
Keeping records of a Claymont water loss
Keep a simple folder for any water damage: the date and time you found it, photos before and after cleanup, the plumber's invoice and the failed part, the contractor's drying log, and a list of discarded items. In apartment and townhouse buildings, add copies of any written notice to management or your association. Those records answer most of the questions an adjuster asks, and they help if the same problem returns.
FAQ
Claymont water damage questions
Is Claymont covered?
Yes. The Claymont ZIP code is covered. Your call connects with an independent contractor serving the area.
Does Naamans Creek flood Claymont homes?
Homes nearest the creek and the low riverfront are most exposed in heavy rain. Most Claymont water damage comes from storms, groundwater and plumbing. Check DNREC's flood planning tool for your address.
Why do my walls get wet in nor'easters?
Strong northeast winds drive rain under shingles, around windows and through masonry. Repair the entry point and dry the wall.
My upstairs neighbor's leak damaged my apartment. What now?
Tell management in writing, photograph your damage, and contact your renters insurer for your belongings.
How do I stop my old pipes from bursting?
Insulate exposed pipes, keep heat steady, let at-risk faucets drip in extreme cold, and have old galvanized lines checked by a plumber.
Does this site have a Claymont office?
No. It is a call-in referral service connecting you with an independent contractor.
Sources and citations
- [1]Wikipedia — Claymont, Delaware
- [2]Ready.gov — Floods
- [3]Wikipedia — Nor'easter
- [4]Delaware News — DNREC launches online flood planning tool (2024)
- [5]American Red Cross — Winter Storm Safety
- [6]EPA — Lead Renovation, Repair and Painting Program
- [7]Delaware Department of Insurance — Flood insurance information
- [8]EPA — Flood Cleanup to Protect Indoor Air Quality

