About Interior French Drains
Whenever homes start to incur basement water issues, a common fix is to install Interior French Drains. If you are building a new home in an area where high rainfall is likely, it may not be a bad idea to install one when the house is built. The Interior French Drain, much like an exterior drain tile carries the water to a pit through a perforated pipe that pumps the water to the surface. Located below floor level the pipe needs to be surrounded by gravel or crushed stone to prevent mud particles from seeping through. A 1-foot-wide by 1-foot-deep trench is needed to hold the drainage pipe and gravel. A grate is not needed when using the basement for storage but in the case that it is being used as living space, walls are typically framed on the inside of the drain.
What is a French drain?
A French drain sounds like a fancy item, but it’s actually just a way to catch water that seeps into your basement. It diverts water through a trench, into a line, and then into a basin and sump pump and out of your basement.
An interior French drain is recommended when the pressure from the water table under the foundation rises (known as hydrostatic pressure) and forces water into the basement through cracks in the floor or wall. This usually happens after a heavy rain. Because many locations in New Jersey receive heavy rainfall in the spring and early summer months, investing in a French drain can save you time and money in the long run.
How is a French drain installed?
At Ideal Basement Waterproofing, we have over 25 years of experience installing interior French drains. We begin by digging a trench into the foundation around the basement walls. The trench will have a slight grade that allows the water to run into a collection basin. A perforated PVC drain pipe will be placed in the trench and connected to the basin. A mesh sock covers the end of the pipe to filter out debris. To finish the installation, the pipe is covered with pea gravel and sealed with quick-drying cement or a metal grid for future access. After the water travels through the pipe and reaches the basin, it is moved outside by a sump pump.
What are the benefits of an interior French drain?
Some of the benefits of a French drain include the following:
- More affordable than an exterior drain
- Efficiently moves water through your basement
- Can be completed any time of the year
The goal is to divert water away from your basement walls. You can accomplish this by transplanting any shrubs or trees growing near your foundation and by installing gutters and downspouts that move water away from your home, reducing the opportunity for water to seep into your basement. If standing water is allowed to remain in your basement, it could cause mold and/or structural damage.
Our experienced staff can help with all your French drain needs. We can also install other items such as a sump pump that may be necessary to make the French drain work as efficiently as possible. Contact us today to learn more!