Chinatown Basement Waterproofing
Basement Waterproofing in Chinatown, Manhattan
Damp cellars, weeping walls and wet floors in old tenements and shop basements traced to their source and sealed.
- Leak sources identified before work starts
- Walls and floors sealed and drained
- Free written estimate after a visit
Why Do Chinatown Cellars Get Wet?
Wet cellars in Chinatown usually have ordinary causes. Old stone and brick walls absorb water, pavement above the cellar leaks, and drains back up in heavy rain. The neighborhood has no particular flood exposure beyond heavy rain, so the cause is usually a specific defect in the building.
Many tenements have a cellar under the shop, and some extend under the sidewalk. Cellar doors, vault covers and cracked flags above can let rainwater in. Grease and wash water from restaurants add to the flow.
- Water coming through cracked or open sidewalk flags
- Failed cellar door seals and frames
- Mortar washed out of foundation walls
- Floors that stay damp or sweat
- Floor drains that back up after storms
- White mineral deposits on the walls
Water in a cellar damages stored goods, rots wood and encourages mold. In a shop basement it can also reach food storage, freezers and electrical panels, which raises the cost of waiting.
Tenants in the apartments above notice too. Damp air rises through floors, and musty smells in hallways often trace back to a wet cellar. Fixing the source helps every floor of the building.
Puddles Under the Shop After Rain?
The source is usually fixable once found. Tell us when it happens and where you see it.
How We Fix It
How Is a Chinatown Cellar Waterproofed?
We trace where the water enters, then fix the entry point and treat the wall or floor. That can mean repairing the sidewalk or cellar door above, repointing the wall, sealing interior surfaces and improving drainage at the floor. We fix the cause before we apply any coating.
In Chinatown, the sidewalk is often the first place to look. A cracked walk or a worn cellar door frame sends water straight down. Repairing those saves the cellar from the top.
Where walls are damp from within, we cut out failed mortar, repoint and seal. A coating over wet masonry does not hold, so the wall comes first.
Floor drains and sump needs are reviewed as part of the visit. We also look at pipe penetrations through the wall, since gaps around old pipes are a common entry point for water in buildings this age. Sewer backups are a plumbing matter, and they need a licensed plumber and may need a backwater valve.
Are There Rules for Waterproofing a Chinatown Cellar?
Interior waterproofing on your own property is usually simpler than structural work. Work on foundation walls, floors or the public sidewalk can involve permits. We never say no permit is needed. Confirm current rules with the city, and we check your property.
Where water comes from the sidewalk, owners must maintain it under the sidewalk rules. The DOT and DOB filings that a job requires come from our office. For the process on violations, see our page on sidewalk violations.
If water enters because a foundation wall has moved, a licensed engineer may need to review the structure. We do not promise results on structural problems.
Landmark status is a separate question for any old building here. Ask the city about your own lot before work begins.
Why Us
Why Chinatown Owners Hire Us for Cellars
Source first
We find where the water enters before we quote any coating.
Sidewalk and wall in one team
The same crew repairs the walk above and the wall below.
Clear written estimates
Scope and materials are listed so you know what you buy.
Nearby
Basement Waterproofing Near Chinatown
We also waterproof cellars in the neighborhoods around Chinatown.
FAQ
Chinatown Waterproofing Questions
Damp walls can hold water for days, and wash water or leaking pipes can add more. We look for the source before we recommend a fix.
Yes. Cracked flags and worn cellar door frames let water run down. Repairing them is often part of the solution.
Backups are a plumbing issue. A licensed plumber handles the line and may install a backwater valve. We handle walls, floors and drainage.
Only if the wall is sound and the entry point is fixed. Coatings over wet or crumbling masonry do not last.
Call (718) 468-8803 and we will schedule a visit. The estimate is in writing and free.
Free on site estimate
Dry Out Your Chinatown Cellar
Find the source, fix it and seal the space.
Contact
Book Your Chinatown Cellar Visit
Say where the water shows up and how often. Photos of the walls and floor are useful.
- 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.