Licensed & Insured · Est. 1927 · Westchester County, NY
Basement Waterproofing in
Westchester County, NY
Local experts protecting Westchester homes from water damage, foundation failure, and mold — for nearly a century.
High water tables, clay-heavy soil, and seasonal flooding put Westchester foundations at constant risk. Naclerio Construction LLC delivers interior waterproofing, exterior excavation, French drains, sump pumps, and crawl space solutions tailored to your home's specific drainage challenges.
95+
Years in Business
Free
Estimates & Inspections
10
Westchester Communities
Mon–Sun
7 AM – 7 PM Availability
Our Services
Waterproofing Solutions for Every Westchester Home
From basement sealing and sump pump installation to full exterior excavation and crawl space encapsulation — we provide the complete range of foundation protection services Westchester County homeowners need.
Interior Foundation Waterproofing
Perimeter drainage systems and vapor barriers engineered for aging foundations and high water tables throughout Westchester County.
Exterior Foundation Waterproofing
Full excavation and membrane application that stops water at the source — before it ever contacts your foundation wall.
French Drain Installations
Slope-calculated, gravel-bedded drainage systems that redirect surface and subsurface water away from your foundation and yard.
Sump Pump Installations & Replacements
Dependable pumping systems with battery backup — designed for homes facing persistent groundwater pressure in Westchester.
Crawl Space Waterproofing
Encapsulation and drainage solutions that eliminate moisture, mold risk, and structural damage in crawl space foundations.
Mold Prevention & Foundation Crack Repair
Targeted crack injection and drainage corrections that eliminate the moisture conditions mold needs to grow.
Act Before It Gets Worse
Signs You Need Basement Waterproofing in Westchester County
Water damage compounds quickly. What starts as a damp spot or musty smell can become mold growth, structural damage, and costly repairs within a single season. If you recognize any of these warning signs, contact us for a free inspection before the next storm.
Protect Your Home Before the Next StormDamp or wet spots on basement walls or floor
Water is actively entering through cracks or porous concrete — a sign of hydrostatic pressure building outside your foundation.
Musty odors in the basement
Persistent musty smells indicate mold growth from chronic moisture — a health risk that worsens without drainage correction.
White chalky deposits (efflorescence) on walls
Efflorescence is mineral residue left by evaporating water — evidence that water is moving through your foundation walls regularly.
Sump pump running constantly or failing
A sump pump that runs non-stop is overwhelmed by groundwater volume. Failure during a storm can mean thousands in flood damage.
Cracks in foundation walls or floor
Horizontal cracks indicate lateral soil pressure. Vertical and diagonal cracks allow water entry and worsen with freeze-thaw cycles.
Pooling water or soggy soil near the foundation
Surface water pooling against your home means grading or drainage is directing water toward your foundation instead of away from it.
Peeling paint or rust stains on basement walls
Paint failure and rust streaks are signs of recurring moisture — the wall is wet often enough to degrade surface finishes.
Where We Work
Waterproofing Contractors Serving All of Westchester County
We serve homeowners across Westchester County, NY — from Yonkers to Armonk. Our team understands the local soil conditions, water table levels, and drainage challenges specific to each community we serve.
Basement Waterproofing in Scarsdale, NY
Scarsdale homes sit on clay-heavy soil that retains moisture and generates persistent hydrostatic pressure against foundation walls. We provide interior and exterior waterproofing, French drain installations, and sump pump services tailored to Scarsdale's Tudor-style and colonial foundations.
Basement Waterproofing in White Plains, NY
White Plains properties face drainage challenges from dense development and aging storm infrastructure. Our exterior foundation waterproofing and French drain systems in White Plains address chronic basement leaks and surface runoff that overwhelm older drainage networks.
Basement Waterproofing in Yonkers, NY
Yonkers' urban lot density and clay soil make French drain installations and dry well systems essential for managing runoff without storm drain access. We design custom drainage configurations for Yonkers properties that eliminate pooling and protect foundations year-round.
Basement Waterproofing in Ossining, NY
Ossining's hillside terrain creates significant surface runoff that concentrates against downhill foundations. We install graded French drain systems and exterior waterproofing membranes to intercept water before it reaches basement walls and causes structural damage.
Basement Waterproofing in Ardsley, NY
Ardsley homeowners frequently deal with high water tables and seasonal flooding in low-lying areas. Our sump pump installations and interior perimeter drainage systems keep Ardsley basements dry through Westchester's heaviest rainfall events.
Basement Waterproofing in Tarrytown, NY
Tarrytown's proximity to the Hudson River and its varied elevation create complex drainage patterns. We provide basement wall waterproofing, sump pump replacements, and French drain installations designed for Tarrytown's specific soil and water table conditions.
Basement Waterproofing in Mount Kisco, NY
Mount Kisco basements are vulnerable to floor seepage and wall moisture from the region's high water tables. Our basement floor waterproofing systems — including perimeter drains, sealants, and vapor barriers — stop water at the slab before it spreads across finished spaces.
Basement Waterproofing in Larchmont, NY
Larchmont's coastal proximity and dense tree canopy create moisture conditions that challenge basement waterproofing year-round. We provide interior drainage systems, dehumidifier integration, and crawl space encapsulation for Larchmont homes facing chronic dampness.
Basement Waterproofing in Armonk, NY
Armonk's larger residential lots and wooded terrain generate significant subsurface water movement. We design French drain networks and exterior waterproofing systems scaled to Armonk property sizes, protecting foundations from the groundwater that accumulates in wooded, sloped yards.
Basement Waterproofing in Mamaroneck, NY
Mamaroneck's flood-prone areas and tidal influence make reliable basement waterproofing critical. We install high-capacity sump pump systems with battery backup and interior drainage networks that handle the water volumes Mamaroneck homeowners face during storm surges and heavy rainfall.
Why Homeowners Choose Us
Why Choose Naclerio Construction in Westchester County
Since 1927, Naclerio Construction LLC has been the trusted waterproofing contractor for Westchester County homeowners. As a licensed, insured, family-owned business, we bring three generations of hands-on expertise to every project — with the personal accountability that only a local, owner-operated company can deliver.
Licensed & Insured
Fully licensed and insured for all waterproofing, drainage, and excavation work in New York State.
Family-Owned Since 1927
Three generations of hands-on expertise serving Westchester County homeowners for nearly a century.
Free Estimates
Every project starts with a thorough, no-obligation assessment of your property's drainage needs.
Local Westchester Experts
We know Westchester soil conditions, water tables, and seasonal drainage patterns better than any out-of-area contractor.
Emergency Response
Basement flooding doesn't wait for business hours. We offer emergency dewatering services across Westchester County.
Transparent Pricing
Detailed scope of work with realistic timelines. No surprises, no hidden costs — just honest assessments.
Workmanship Warranty
We stand behind our installations. Ask about our workmanship warranty on waterproofing systems and drainage work.
Fast Response Times
We respond quickly to inspection requests and emergency calls — because water damage compounds every hour you wait.
Common Questions
Basement Waterproofing FAQs for Westchester County Homeowners
Cost depends on the scope — interior drainage systems typically range from a few thousand dollars for a small basement to larger investments for full exterior excavation projects. Factors include foundation perimeter length, system type, soil conditions, and whether permits are required. Naclerio Construction provides free, detailed estimates so you know exactly what's involved before any work begins.
Interior waterproofing captures water after it enters the foundation and is ideal for finished basements with minimal disruption. Exterior waterproofing stops water at the source and is best for recurring leaks, visible foundation cracks, or homes where interior solutions haven't resolved the problem. We evaluate your home's water intrusion history, soil conditions, and foundation type to recommend the right approach.
Interior drainage system installations typically take one to three days depending on basement size. Exterior excavation projects can take three to five days or more based on perimeter length and site conditions. We provide a detailed timeline with every estimate so you can plan accordingly.
Permit requirements vary by municipality and project scope. Interior drainage work may not require a permit, but sump pump discharge routing and exterior excavation often do. Naclerio Construction handles permit coordination for all applicable projects and ensures compliance with local Westchester County ordinances before work begins.
Yes. Foundation cracks are repaired using hydraulic cement and polyurethane injection to seal the entry point, followed by drainage corrections that eliminate the hydrostatic pressure causing the crack. Repairing the crack alone without addressing drainage typically results in new cracks forming nearby.
Crawl space waterproofing involves installing vapor barriers, drainage matting, and dehumidification systems to control moisture in below-grade crawl spaces. If your crawl space has standing water, visible mold, or wood rot on floor joists, waterproofing is essential to prevent structural damage and indoor air quality problems throughout the home.
Call us at (914) 227-5521 or fill out the contact form on our website. We serve all of Westchester County including Scarsdale, White Plains, Yonkers, Ossining, Ardsley, Tarrytown, Mount Kisco, Larchmont, Armonk, and Mamaroneck. We're available Mon–Sun, 7:00 AM to 7:00 PM.
Call Now for Basement Protection in Westchester County
Don't wait for the next storm to find out your waterproofing system isn't working. Naclerio Construction LLC provides free inspections and honest assessments across Scarsdale, White Plains, Yonkers, and all of Westchester County.