Just like other types of drains, they are susceptible to clogging over time. Ideally, clean the French drain once every year. Test it by flooding the French drain to gauge its effectiveness when it comes to draining the excess water. First, you'll need to locate the ground-level access point of your French drain.
French drains need annual maintenance
The drain may have a cover that needs to be removed, or if it's connected directly to a downspout, the downspout can be disconnected to provide access to the drain. Snaking out the drain will break up any soft clogs or obstructions that have accumulated in the drain.
French Drain Maintenance
Your French drain will not need much maintenance. It is like an underground element of your gutter system, protected by a layer of gravel so that the drain will only need to be cleaned out once a year.
The easiest way to tell if your French drain is operating properly is to look at your lawn or basement. If there's water, chances are there could be a problem and your drain isn't working correctly. This issue could be due to clogging.
Many companies and blogs online state that french drains last from 10 years to 30 years. Again, I feel the longevity is directly related to the materials used and installation practices.
Just like other types of drains, they are susceptible to clogging over time. Ideally, clean the French drain once every year.
A French drain costs $500 to $18,000, with a national average of $9,250. The type of drain and its length determine total cost.
In many cases, using a pressure washer is an effective way to unclog a French drain. That said, sometimes tree and plant roots, rocks, and even compacted mud create an obstruction that is too much for a pressure washer to handle.
If you have a severe clog and can't get it cleared or if you don't want to risk damaging the pipe with a sewer snake, then you should hire a professional French drain company near you to clean it. The average cost for drain cleaning runs between $150 and $340, with an average price of $240.
Perform a regular visual inspection
Start by examining the visible portions of your drain such as the pipe outlets or the gravel trench. Look for signs of damage, blockage, or erosion around the area. It is important to address these issues promptly especially if you notice signs of cracks, clogs, or wear and tear.
In addition to cleaning the drain regularly, you can also take steps to prevent debris from reaching it. Watch your household water flow, keep the yard clean of debris so that it doesn't get carried down to the drain and regularly clean the area around the drain to keep it working as optimally as possible.
Clay soil has poor permeability, meaning it doesn't allow water to pass through easily. In such cases, the effectiveness of a French drain may be limited as the water may struggle to drain away from the area efficiently. French drains may not be suitable for areas with high water tables.
Fill the trench with topsoil and compact to completely cover the entire French drain system.
Generally speaking, a French drain will last approximately 30 to 40 years.
Routine maintenance on a weekly and monthly basis will help you keep drains clean and limit your risk of obstructions in these pipes. Practice correct use of garbage disposal equipment. Don't put grease or certain types of food down the drain.
Clogging and Blockages
Clogging is one of the leading causes of French drain failure, often due to root intrusion or sediment build-up.
French drains should be cleaned out at least once per year. This is because they can become clogged with debris and other organic matter, which can decrease the efficacy of the drain. The best method for cleaning a french drain is to use an electric snake to clear out any scrap.
The cost of drain cleaning averages about $241, but it can fall between $147 and $344, depending on the location and extent of your clog. There is nothing like a backed-up drain to derail your plans. Luckily, there are different solutions that will have you—and your pipes—back on the move in no time.
Disadvantages of French Drains
Another disadvantage of French drains is their potential to attract tree roots. The gravel or rock used in the system can provide a water source for trees, leading to the origins invading the drain. This can cause blockages and damage to the system.
How long does a French drain last? A French drain should last at least 10 years, although it often has a lifespan of three or four decades when properly maintained. Sometimes sand or silt infiltrates the pipe over time, making it eventually useless.
If a foul odor emanates from the area, it is a sign that you must repair a French drain. When your drain is clogged or damaged, water can become stagnant and produce an unpleasant odor. A foul smell is typically an accumulation of leaves, dirt in the drain, or a broken pipe that allows sewage to leak into the gutter.
French drain installation is a service offered by a diverse range of professionals from landscapers to plumbers to foundation specialists. These professionals bring a varied skill set to the project, often integrating the drainage system seamlessly with other landscaping or construction work.
Interior French drains are meant for waterproofing the basement or draining your crawl space. They cost more because contractors must tear out the basement floor (most often made of concrete), install the drain, and then repair it.
An alternative to the French drain, the NDS EZ-Drain installs without gravel, saving a lot of time and money. EZ-Drain bundles consist of fabric, lightweight gravel substitute, and pipe. It's like an entire yard drainage system, bundled neatly together.
If installing the drain involves diverting a stream or affecting a wetland, you likely need a permit to move forward. Generally, a small French drain on your property that doesn't change the flow of runoff entering and exiting your yard won't need a permit.