Kensington Dry Basements
Basement Waterproofing in Kensington, Brooklyn
Damp walls, seeping floors and rain leaks handled in Kensington houses, row houses and pre war apartment buildings.
- Interior drainage and sump pumps
- Crack injection and wall coatings
- Free visit with a written price
Why Do Basements in Kensington Get Wet?
Kensington is inland, so leaks come from heavy rain, cracks in older walls, poor drainage around buildings and sewer backups in big storms. Water in the soil presses against basement walls and floors and enters through any crack or joint. The buildings' age makes this more likely.
Pre war apartment buildings along Ocean Parkway and Church Avenue have large cellars for boilers, storage and laundry. Houses and row houses have basements that are often finished. In both, water damages equipment and belongings.
Good tree cover has a small effect too. Roots can crack old sewer lines and drain tiles, and leaves clog gutters. A gutter that overflows at a foundation wall is a common, cheap cause of a wet cellar.
The first task is finding where the water comes from. Cracks in the wall, the floor joint, windows, floor drains and pipes all look similar when the floor is wet.
Methods
Which Waterproofing Methods Work in Kensington Basements?
Interior drainage collects water along the wall and carries it to a sump pump. Crack injection seals single leaks. Wall coatings slow dampness once the source is handled. Exterior membranes work best but need digging. Detached houses may allow exterior work, while attached buildings often need interior methods.
| Problem | Common fix |
|---|---|
| Seepage at the wall and floor joint | Interior drainage to a sump pump |
| A single leaking crack | Crack injection |
| Damp, powdery walls | Wall coating after repairs |
| Downspouts emptying at the wall | Redirect them and correct the grade |
| Water at a window well | Repair the well and its drainage |
Is a Sewer Backup a Waterproofing Problem?
Not usually. A sewer backup pushes wastewater up through drains when the city sewer or your house line is overloaded. Waterproofing controls groundwater coming through walls and floors. A backup calls for plumbing solutions, such as a backwater valve installed by a licensed plumber.
In heavy storms, sewers in many inland areas can back up, and Kensington has no particular flood exposure beyond that. So a wet cellar after a big storm could be either problem, and we check which one it is.
If it is a plumbing problem, we tell you and suggest you call a licensed plumber. Waterproofing would not fix it, so we will not sell it to you.
Work that changes structure can need DOB permits, and work that touches the public sidewalk generally needs a DOT permit. Confirm current rules with the city.
Water on Your Cellar Floor?
We will trace where it comes from and write up a plan.
What Affects Waterproofing Cost in Kensington?
Basement size, interior versus exterior work, digging, pumps, wall repairs and access decide the price. A large apartment building cellar is very different from a house basement, and even neighbors on one block can have different problems. We give a written price after a free visit, so you see the full scope first.
- Wall length and floor area to treat
- Interior drain versus exterior membrane
- Sump pump and discharge line
- Repairs to cracked or crumbling walls
- Access through the building or a side yard
Before paying for major work, check gutters, downspouts and the slope of the concrete beside the building. Fixing those can cut water inside a lot.
How Do You Protect a Finished Basement From Water?
Start by fixing the source, then keep valuables off the floor and use materials that tolerate damp. Interior drains and a working sump pump protect the room. Waterproof coatings help walls but do nothing for water that comes up through the floor.
Many Kensington owners use the basement as living space, a workshop or a laundry. Carpet, drywall and wood trim soak up water and grow mold, so a leak can cost far more in finishes than in structure.
If you plan to renovate, waterproof first. Building new walls over a wet foundation traps moisture behind the drywall. We are happy to talk through the order of work with your other contractors.
Store items on shelves or plastic bins off the floor until the system has proved itself through a couple of big storms. A dehumidifier helps with the leftover damp, but it will not stop a leak.
Process
How a Kensington Waterproofing Job Works
Find the source
We check walls, floor joints, windows, downspouts and drains.
Plan
You get a written scope and price.
Repair
Cracks and joints are repaired first.
Install
Drainage, coatings or pumps go in as planned.
Test
We check the system and explain how to maintain it.
Nearby
Basement Waterproofing Near Kensington
We also waterproof basements in the neighborhoods around Kensington.
FAQ
Kensington Waterproofing Questions
Yes. We work for owners and managers and plan around boilers, storage and access.
It depends on the pump, pit and power. We size the system to the space and explain how to keep it working.
If water comes up through a floor drain or toilet in a storm, the sewer is involved and a licensed plumber should look. Water seeping through walls is a waterproofing problem.
Yes. We are licensed and insured with more than 25 years in NYC. Call (718) 468-8803 for a free visit.
Sometimes. Interior drains run along the base of the wall, and finished walls may need to be cut back. We explain the scope first.
Contact
Request Kensington Waterproofing
Tell us where the water shows up and how often. Photos help us plan.
- Call us(718) 468-8803
- HoursMon to Sat, 9:00 AM to 6:00 PM
- Free on site estimate with a written price
- Licensed and insured, 25+ years in business
- We handle DOT sidewalk permits
- Serving Manhattan, Brooklyn, Queens and the Bronx
Get Your Free Estimate
Takes about a minute. No cost and no obligation.