Water in the basement? Find the source first
Middlesex Waterproofing traces basement water to where it actually comes in before we recommend any repair.
Water on a basement floor can come from five or six different places, and each one has a different fix. Guessing wrong is how people end up paying for a system that does not touch the real problem.
Five places basement water comes from
The pattern usually gives it away. Water that shows up a few hours after a storm, along the bottom of a wall, is groundwater. Water that appears on a dry, sunny day is almost always plumbing. Water that comes up through a floor drain, especially if it is dirty, is the sewer.
On a visit we look at where the water stands, how high the marks go, what the walls are made of and what is happening outside: gutters, downspouts and how the ground slopes. Then we tell you which of these it is.
Source and the sign
- Wall seepage
- Damp patches or drips on the wall face, worse after rain
- Cove joint
- A wet line where the floor meets the wall
- Window wells
- Water under a basement window during storms
- Plumbing
- Wet spots under pipes, any day, rain or not
- Sewer backup
- Dirty water rising from a floor drain
Small fixes that sometimes solve it
Not every wet basement needs a contractor. A gutter clogged with leaves dumps a roof's worth of water right at the foundation. A downspout that ends at the wall does the same. Soil that has settled into a low strip along the house sends rain toward the basement instead of away.
Those are fixes most homeowners can make themselves: clean the gutters, extend the downspouts well away from the house and build the soil up so it slopes away. If that is all your basement needs, we will say so and leave it there.
Sewer backup is a different problem
When the water comes up through a floor drain or a basement toilet, the source is the sewer line, not the ground. Heavy storms can overload the pipes in the street, and that water looks for the lowest opening, which is often your basement.
Drain tile and a sump will not stop a sewer backup. The usual fix is a backwater valve on the house sewer line, and that is plumbing work. When the sewer line is the source, we point you to a licensed plumber.
When a full interior system makes sense
A full system is the answer when groundwater comes in at the floor joint or through the walls on more than one side, or keeps coming back after the gutters and grading are sorted out. That means interior drain tile along the wet walls, feeding a pit with a sump pump and, ideally, a battery backup.
When the leak is one crack in a poured wall, a smaller repair like crack injection may be all it takes. We work from the inside, and we do not do structural foundation repair or exterior excavation.
Match the fix to the source
- Gutters, grading
- Homeowner fixes outside
- One wall crack
- Crack injection
- Floor joint, many walls
- Drain tile and a sump
- Floor drain backup
- A licensed plumber
Leaks we have read about close to home
Flood records near us are public. In Sayreville, the state offered buyouts of 250 floodplain houses after Sandy. In Woodbridge, nearly every home in Watson-Crampton was underwater in that storm, and the restored areas there stayed dry through Ida. In Milltown, the post office near Lawrence Brook was closed by flooding from April until June 2007.