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A French drain is a drainage system designed to prevent water damage to your property. It’s a simple and effective solution that can help keep your basement or crawl space dry, as well as prevent erosion around your home’s foundation. In this article, we’ll explain how a French drain works and how it’s installed.
A French drain is a trench that is filled with gravel or rock and contains a perforated pipe. This pipe allows water to flow into it and be diverted away from your home’s foundation. When it rains or snow melts, water flows into the trench and into the pipe. The pipe then carries the water away from your home and discharges it in a safe location.
The French drain system is designed to collect water from low-lying areas, such as the base of a foundation, and redirect it to a more suitable location. It works by utilizing the natural force of gravity to move water away from your property. This is why it’s important to install the trench at a slight slope, so that water flows freely towards the discharge point.
How Is a French Drain Installed?
Installing a French drain involves several steps, including excavation, placement of the perforated pipe, adding gravel or rock, and covering the drain with soil.
1. Excavation: The first step is to dig a trench in the area where the French drain will be installed. The trench should be at least 6-12 inches wide and deep enough to accommodate the perforated pipe and gravel.
2. Placement of Perforated Pipe: Once the trench is dug, the perforated pipe is placed in the trench. The pipe should be positioned at the bottom of the trench with the holes facing downwards.
3. Adding Gravel or Rock: The next step is to add gravel or rock to the trench. The gravel should be placed around the pipe, leaving enough space for water to flow freely. The size of the gravel should be around ¾ inch in diameter.
4. Covering the Drain with Soil: After the gravel is added, the trench is covered with soil, and the French drain is ready for use.
In summary, a French drain is a drainage system designed to keep your home and property safe from water damage. It works by diverting water away from your home’s foundation and discharging it in a safe location. Installing a French drain involves excavating a trench, placing a perforated pipe, adding gravel or rock, and covering the drain with soil. A properly installed French drain can provide long-lasting protection for your property.