Plot out and mark the path of the French drain. Maintaining a regular home repair schedule will prevent big repair issues and bills. Grading of all surfaces should be sloped away from home with a slope of 1% or greater. This article has been viewed 94,082 times. X Here are some before and after pictures: French Drains are a Valuable Addition to Your Property. Exterior French drains are cheaper (primarily because they don’t involve digging up a basement floor). … For example, if you have a trench that is 24 feet (or 7.2 meters) long, the end of the trench should be 3 inches (or 7.5 cm) deeper than the beginning. An interior French drain doesn’t prevent water from entering your basement. This drainage system can become clogged up with roots, leaves, dirt, clay or other debris over time. If you're having problems with standing water in your yard or a leaky basement, improper drainage is the culprit. A French drain is a trench filled with a perforated pipe and gravel that allows water to drain naturally from your yard. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. All elements of your French drain system--including the collection basin and sump pump at the end--are readily available at any home supply or hardware store. Concrete must be broken out, which requires drilling through the floor and using a jackhammer. If you have water problems in your basement, a french drain … Subscribe to the HGTV Inspiration newsletter to get our best tips and ideas delivered weekly. Always use drainage gravel. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. If water is sitting in the bottom of the French drain, then the slope is incorrect and the drain is not installed properly. The installation won’t leave any permanent scars on your property. A French drain also provides a solution for basements that admit water through the foundation. If water is coming in from leaks in the wall then leave a 2 inch (or 5 cm) gap so as to allow water to run down the wall and into the drain. Tamp down the soil at the bottom of the trench with your shovel, and make the trench 1 inch (or 2.5 cm) deeper for every 8 feet (or 2.4 meters) of length. Make sure your piping (black corrugated drain tile) is set at or slightly below the bottom of the foundation's footer. References. From a steel-insulated carriage door to a solar exhaust fan that aerates the attic located above it, the two-car garage is both eco-friendly and functional. An interior French drain system is much more … Do not use limestone gravel in your pipe trench. Your drain needs to slope downwards in order to effectively carry water to the basin. Privacy Policy. If you are experiencing repeated problems with a wet basement, and water seepage low to the floor, then an interior French Drain could be the perfect solution. However, if you are particularly worried about silt or other solid matter getting into the drain, consider wrapping the piping in a drain sleeve, which allows water in but filters out larger particles. If you are running a French drain around a finished basement, you will need to dig all the way down to access the footing at the basement’s foundation. wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. Rather, it catches water that seeps inside and channels it by gravity to a sump pump that sends the water back outside or into a drain line. Mix the cement mix with water and pour it over the gravel that lies on top of and to the side of the piping. 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