Why does water come in on the uphill side of my basement?
Groundwater and runoff move downhill through the soil and press hardest on the uphill foundation wall. A drain along that wall or a curtain drain upslope is a common fix.
What is a curtain drain?
A gravel trench with perforated pipe dug across a slope above the house. It catches water moving downhill and carries it around the foundation.
Can old stone foundations be made dry?
Usually yes, by draining the water that gets in and repointing the worst joints. Coatings alone tend to fail on stone.
Does rock in my yard affect waterproofing?
Yes. Rock can channel water toward the foundation and makes digging slower and more expensive, which often favors interior drainage.
How much does basement waterproofing cost?
This Old House puts interior waterproofing at about $3,000 on average and exterior work at roughly $7,000 or more. Larger or harder jobs cost more.
How much does a French drain cost?
Fixr lists most French drain projects at about $2,800 to $6,500, with interior drains at about $40 to $100 per linear foot.
Is a battery backup sump pump worth it?
If your basement floods when the pump stops, yes. Heavy storms that raise groundwater often cut power at the same time.
Should I run a dehumidifier?
Yes, in most basements here. It controls summer condensation and musty smells, though it will not stop liquid water from leaking in.
Do I need a permit for waterproofing?
Excavation, new drain outlets and electrical work often need one. Rules vary by village and town, and your contractor should pull the permit.
How do I check a contractor's license?
Westchester County licenses home improvement contractors through its Department of Consumer Protection, which can confirm whether a license is current.
Will waterproofing stop river flooding?
No. Waterproofing handles groundwater and runoff. Homes in river flood zones should look at flood insurance and keeping utilities above flood levels.
How soon will a contractor contact me?
Each contractor sets their own schedule, so we cannot promise a time. Include as much detail as you can so they can plan the visit.