Find the water. Lock it out.
Basement and foundation waterproofing, structural repair, drainage and exterior masonry across Connecticut and the New York suburbs. We find the entry point before we quote a system, because the wrong system is just an expensive way to stay wet.
Free on-site diagnosis
Tell us what you are seeing. We will come and find out why.
- No charge for the visit or the written estimate
- Cause first, not a quote off a photo
- 30-year warranty on completed work
- Same-day response for active leaks
Or call (845) 879-3321, seven days
Everything from the chimney crown to the footing
A wet basement is usually three problems wearing one coat: a gutter problem, a grading problem and a foundation problem. Fixing one of the three and calling it finished is why so many homeowners pay twice. We handle all of it.
Basement Waterproofing
Interior drain tile, exterior membrane, crack injection and vapor control. The system is chosen after we find the entry point, not from a price list.
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Foundation Repair
Cracked, bowing, spalling and settling walls repaired at the structure. Carbon fiber, steel, anchors, rebuilds and epoxy, matched to how the wall is actually failing.
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Foundation Underpinning
For footings that are too shallow, undersized, or sitting on soil that moved. Underpinning carries the load down to ground that will hold it.
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Sump Pump Installation
Right-sized pump, sealed basin, proper check valve, a discharge that actually leaves the property, and battery backup for the storm that takes the power out.
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French Drain Installation
Perforated pipe, washed stone, filter fabric, real pitch, daylighted or tied to a pump. Still the highest-return fix in the trade for groundwater.
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Chimney Repair
Repointing, crown rebuilds, flashing, caps and waterproof sealing. Most chimney leaks are a crown or flashing failure, not a roof failure.
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Roof Repair
Leak tracing, flashing, valleys, shingle and slate repair, and emergency tarping when a storm opens something up overnight.
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Step & Stoop Repair
Settled, cracked and spalling steps rebuilt or resurfaced, with the drainage fault that wrecked them corrected in the same visit.
Learn moreThe basement warned you before it flooded
Houses give notice. A smell that returns every March. A chalky white bloom on the block. A hairline crack that got a little wider over two winters. None of these mean the house is coming down, and none of them are cosmetic either.
They mean water is moving through a structure that was built to keep it out. The repair is only ever cheaper today than it will be next spring.
- A musty smell in the basement that comes back every spring, then fades
- White chalky bloom (efflorescence) on block, brick or poured walls
- A damp line along the cove joint where the floor meets the wall
- Stair-step cracks in block, or a poured wall that bows inward at mid-height
- Interior doors that stick on one side of the house and not the other
- A sump pump cycling every few minutes, or one that has never once run
- Puddles that sit against the foundation for a day after the rain stops
- Rust on the bottom of appliances, or mold on the underside of stored boxes
Four ways water gets in, and only one gets talked about
Most quotes assume hydrostatic pressure and price an interior system. Sometimes that is right. Often the water is arriving from somewhere far cheaper to fix, and nobody looked.
Hydrostatic pressure
Groundwater rises, saturated soil pushes on the wall from every side, and water is forced through pores, joints and cracks. This is the one people picture, and it is rarely the whole story.
Surface water and grading
Ground that slopes toward the house, a patio that settled the wrong way, a downspout dumping four feet from the wall. Cheap to fix, and often half the problem.
The cove joint and the slab
Where the floor meets the wall is a seam, not a seal. Water under the slab comes up through it and looks exactly like a wall leak.
Openings above grade
Window wells acting as buckets, a cracked chimney crown, failed flashing, a cellar hatch with no drain. Water gets in above the ground far more often than homeowners expect.
Find the cause, then talk about price
Four steps, no high-pressure close, no today-only discount.
Tell us what you are seeing
Call, text or send the form. Photos help more than descriptions. If water is coming in right now, call instead of writing and say so first.
We come out and find the source
On site, at your address, at no charge. We look at the grading and the gutters before we look at the wall, because that is where the answer often is.
A written estimate you can read
What is wrong, what we propose, what it costs. No same-day discount, no number invented over the phone, no pressure to sign in your kitchen.
Work backed for 30 years
30 years of cover on the completed job. Ask for the terms that apply to your scope and we will go through them with you.
Backed by a 30-year warranty
A waterproofing system is only worth the paper behind it. Our work carries a 30-year warranty. Ask for the terms that apply to your job and we will read them with you before you sign anything, not after.
Five counties and the mid-Hudson Valley
No office to visit, which means no geography wasted on being close to a building. We drive to the address.
Fairfield County
Shoreline water tables, ledge close to the surface and a lot of pre-war stone foundations. We cover every town and ZIP code in the county and we drive to you.
30 towns · 48 ZIP codes New YorkWestchester County
Hillside lots that send runoff straight at the back wall, plus block and stone basements that were never waterproofed. Whole county covered, at your address.
58 towns · 69 ZIP codes New YorkRockland County
Clay-heavy soil that holds water against a wall long after the rain stops. Every town and ZIP code in the county, and we come out to look at it.
28 towns · 25 ZIP codes New YorkNassau County
A high water table almost everywhere, and slab and shallow-basement homes where a pump failure shows up fast. Full county coverage, on site.
62 towns · 68 ZIP codes New YorkQueens
Attached and semi-attached homes where a neighbor's grading becomes your problem, plus cellar entrances that flood. Every neighborhood and ZIP code covered.
42 towns · 58 ZIP codes New YorkMid-Hudson Valley
Fishkill, Newburgh, Poughkeepsie, Brewster and Carmel. Older housing stock, deep frost line and a lot of fieldstone foundations that move.
5 towns · 6 ZIP codesWater on the floor is a today problem
A pump that quit halfway through a storm. A crack that went from weeping to running. A cellar door taking water faster than it drains. Damage compounds by the hour once water is inside, so we run emergency and same-day calls rather than booking you for Thursday.
Answers before you pick up the phone
Is the estimate really free?
Yes. We come to your property, look at the problem and give you a written estimate at no charge. We are a service-area business, so there is no trip fee attached to that visit either.
How fast can someone get here?
For emergencies, water actively coming in, a pump that has failed mid-storm, we run same-day and emergency calls. Call (845) 879-3321 for those rather than using the form, because the form waits for someone to read it.
Can I come to your office instead?
No, and that is deliberate. Water Lock is a service-area business. There is no showroom, no counter and no retail overhead built into your price. We drive to you across every county we cover.
What does the warranty actually cover?
Finished work carries 30 years of cover. The exact terms depend on the system installed, so ask us for the ones that apply to your job and we will read them with you before you commit to anything.
Are you licensed and insured?
Yes. Licensed, bonded and insured. Ask to see the certificates at the estimate. Any contractor who hesitates at that question is telling you something.
Which towns do you cover?
Fairfield County in Connecticut, plus Westchester, Rockland and Nassau counties and Queens in New York, every town and ZIP code inside them. We also cover Fishkill, Newburgh, Poughkeepsie, Brewster and Carmel in the mid-Hudson Valley. The full list is on the service areas page.
Will you tell me if I do not need the work?
Yes. Plenty of wet basements turn out to be a downspout, a regrade and a hundred dollars of stone rather than a full interior system. We would rather tell you that and keep the phone number than sell you a system you did not need.
Do you do the work yourselves?
Yes. Waterproofing, structural repair, drainage and the masonry that goes with them are all in house, which is why we can correct the cause and the symptom on one job rather than coordinating three trades.
Get a real diagnosis and a written price
Free estimates anywhere we cover. Tell us what the basement is doing and we will come and find out why.