Waterproofing Services
Bandow Co., Inc provides waterproofing services for property owners and managers throughout New York City. Every project starts with a careful inspection so that any work we recommend is based on what is actually causing water to enter the building. We aim for repairs that hold up over time, not quick fixes that fail after the next heavy rain.
Basement Waterproofing
Basements are often the first place where water problems show up. We address damp floors, wet walls, and seepage through interior sealing, drainage improvements, sump systems, and exterior treatments where appropriate. Our recommendations depend on what your specific basement needs, the age of the building, and how the surrounding ground handles water.
Moisture Control
Persistent dampness can damage finishes, weaken structures, and contribute to mold growth. We help identify whether the moisture is coming from outside infiltration, plumbing, condensation, or a mix of sources, and we apply the right combination of barriers, ventilation improvements, and repairs to bring humidity back under control.
Leak Prevention
Many leaks can be prevented before they cause major damage. We inspect joints, flashings, parapet walls, and other vulnerable points to seal weaknesses before water finds them. For active leaks, we trace the path of water back to its real source rather than just covering symptoms inside.
Wall & Surface Waterproofing
We apply coatings, membranes, and sealants to brick, concrete, and masonry walls — protecting them from water absorption, freeze-thaw damage, and stains. Treatments are chosen to suit the surface, the exposure, and the look you want to maintain on the finished wall.
Water Intrusion Support
If water has already entered your property, we help you respond quickly: locate the entry point, stop continued intrusion, and outline a long-term repair plan. We also coordinate with property managers, supers, and other trades when more extensive work is needed beyond waterproofing.
Residential Waterproofing
For homeowners and residential building owners, we work on brownstones, townhouses, multi-family buildings, and apartment basements. We're used to the realities of NYC residential properties — older construction, shared party walls, narrow access, and sensitive interior finishes — and we plan our work to minimize disruption to people living in the building.
Commercial Waterproofing
For commercial clients, we waterproof storefronts, mixed-use buildings, offices, and retail spaces. We understand that water damage in a business setting means lost time and lost revenue, so we focus on durable repairs and clear scheduling. Estimates include scope, materials, and an honest timeline so building owners and managers can plan around the work.