How do you keep water out of the basement? First, try easy fixes likes gutters and landscaping. The next step is interior drain tile and a sump pump.
For a block foundation, drill weep holes in the blocks so that water trapped in the voids of the block can drain out.
First, make sure that rainwater runs away from the house foundation. To pinpoint problem areas, go outside while it's raining and observe how the water flows off the roof and onto the ground around the house. Pay particular attention to areas below roof valleys where lots of water runs off.
Add soil to slope the ground away from the foundation. The grade should slope a minimum of 1 in. per foot for the first 4 to 6 ft. If necessary, direct roof water away with gutters and downspouts.
If these measures fail, you may have to install an interior drain tile and sump basin. The corrugated floor edging catches water running down the inside of the foundation wall and seeping under it and then directs it to the drain tile. The drain tile carries the water to the sump basin, where an electric pump automatically discharges it.
The materials are relatively inexpensive, but the labor is huge. You'll need to jackhammer out a strip of concrete around the perimeter, haul out concrete rubble and dirt, carry in gravel, and then patch the concrete floor. This is dusty, sweaty labor. Pros charge several thousand dollars for this job.
To install this system, follow these steps:
If you have a concrete block foundation, you'll have to drain the block cores by drilling 1-in. holes through the face of the block. Rent a rotary hammer with a 1-in. masonry bit; it's worth the cost.
Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration.
You'll also need a jackhammer and leather gloves.
Avoid last-minute shopping trips by having all your materials ready ahead of time. Here's a list.