Many homeowners do not realize that their downspouts run into an underground downspout system, sometimes called a
UnderGround Downspouts run maintenance free year-round to properly manage roof water runoff around your foundation. Keeping water away from your home's foundation is a step in preventing a wet basement. Plus, they blend right into your landscaping and eliminate those annoying downspouts laying across your lawn.
Installing a buried downspout drainage system is a great way to manage rainwater runoff and keep it away from your foundation. By minimizing the risk of flooding and soil erosion, buried downspouts offer a reliable, low-maintenance alternative to surface-level options.
A French drain (also known by other names including trench drain, blind drain, rubble drain, and rock drain) is a trench filled with gravel or rock, or both, with or without a perforated pipe that redirects surface water and groundwater away from an area.
Proper drainage is crucial when it comes to buried downspouts. Without it, water can accumulate and cause a variety of problems. For instance, water can seep into the foundation of your home, causing significant damage over time. This can weaken the structure of your home, and lead to costly repairs.
Many homeowners do not realize that their downspouts run into an underground downspout system, sometimes called a french drain. These underground downspout drains can get clogged as easily as your gutters can with leaves and debris.
Water pooling around your downspouts, underground drains, or foundation is one of the most easily spotted signs of a clog in your underground drain. Something is preventing the water from flowing where it needs to be, forcing it to return the way it came in, leading to pooling water.
But in other cases, like those with a particularly sandy or clay-rich soil composition, homeowners may choose to have their downspouts go directly into the ground. This helps to prevent pooling around a home's foundation, which can cause structural damage if left unchecked.
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.
A grassed swale is a graded and engineered landscape feature appearing as a linear, shallow, open channel with trapezoidal or parabolic shape. The swale is vegetated with flood tolerant, erosion resistant plants.
To ensure proper coverage and protection, bury your downspout extension at least 12 inches deep. This depth helps protect the pipe from surface activities and ensures efficient water drainage.
The average cost to install downspouts is $30 to $75 per downspout. Total downspout replacement costs $220 to $625 for 4 to 5 downspouts. Adding new downspouts costs $2 to $4 per linear foot installed. Burying downspouts with a drainage system costs $150 to $350 each.
Choosing the wrong downspout pipe, like a perforated pipe, defeats the purpose and allows water to leach through the line near the home's foundation. Instead, homeowners should use a solid corrugated pipe when burying downspouts. Solid pipe is the best option because it's flexible and can be run in one piece.
A downspout, waterspout, downpipe, drain spout, drainpipe, roof drain pipe, rone or leader is a pipe for carrying rainwater from a rain gutter.
UK building codes require downpipes to exit a metre from foundations to avoid saturated soil that could undermine structures. Surface drains and soakaways are best as they slowly absorb water, unlike sewers which risk flooding if pipes discharge directly into them as this can overwhelm the drain system.
A French drain is a trench filled with a perforated pipe and gravel that allows water to drain naturally from your yard. Depending on the size of your yard and the scale of your drainage issue, you can purchase the pipes and equipment to create a French drain yourself.
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.
With stormwater, most likely, your drainage systems would fall under land improvements. Stormwater best management practices such as french drains, downspouts and gutter systems, bioswales, and dry wells could qualify as depreciable assets.
Generally speaking, a French drain will last approximately 30 to 40 years. However, the above-mentioned factors may shorten its life cycle and it must then be replaced by a team of foundation experts.
They will be dug at a slope to ensure water keeps moving after exiting the gutter system. These trenches will house the underground downspout and provide a pathway for the extension to carry water safely away from your home. Don't worry, these will be filled back in at the end of the process.
Always vent downspouts at the house to keep buried downspouts from freezing. You can get warm water through that vent in the wintertime if you have a freeze up. Then, if you do freeze up and you have a thaw, the water will come out of these vents.
Use a Drain Snake
This is probably the easiest method: get yourself a drain snake and use it to manually clean out the pipe after disconnecting the underground drain from the downspout. This method is best if you have a minor clog caused by leaves, twigs, and other organic material that is easy enough to push through.
You'll see a hole in the ground where the French drain end begins. If you're uncertain where the drain starts, try looking at the highest point of your yard, since the design of the French drain is to help water run downhill.