Many homeowners connect their downspouts to underground drains to help redirect rainwater away from their homes. 

In this article, you will learn where underground downspouts go, how to unclog them, the pros & cons of owning one, as well as some helpful tips on installing it.

What Are Underground Downspouts?

Underground downspouts are vertical pipes attached to the gutter of a house or building, which carry, lead, or redirect rainwater away from the building. Downspouts assits gutter drainage by carrying the water to the road, a nearby drainage system, or to the side of your home.

Water will overflow in various spots when these underground drains get clogged, causing damage to your gutter system.


Bear in mind that the drain might be slightly clogged, allowing some water to pass through, or it might be entirely clogged, preventing any water from passing through.

Many difficulties related to overexposure to excessive moisture levels may be avoided with a well-made and precisely designed downspout and gutter system. What’s more, if your gutter systems are tidy and appealing, they may assist in increasing the charm and value of your house or company.

A congested drainage system can also result in foundation damage, erosion, mildew accumulation, landscape damage, and corrosion.

Should You Consider Having An Underground Downspout?

So you want to get an underground downspout installed, but you don’t know if it is the best call. Below are some of the advantages and disadvantages of having one installed to help you make that decision. 

These factors might not apply to everyone, but it is still good to consider these aspects.

Having underground downspouts installed might be a good investment if you are looking for a simple waterproofing solution that takes up less space. Additionally, they work with other methods and drainage systems to protect against potential flooding and other water damages. 

You won’t have to worry about these downspouts disrupting your landscaping or getting in the way while you’re doing maintenance around your home because they are underground. In addition to that, they also make a reasonable selling point if you plan to put your house up for sale.

It’s worth noting that these downspouts are most effective in properties that endure light to moderate flooding. Homes with a history of flooding, on the other hand, may require a combination of waterproofing and flood-remediation measures to achieve the greatest outcomes.

Some waterproofing remedies you can have installed simultaneously with your underground downspouts are internal drainage systems, a sump pump, a dehumidifier, vapor barriers, and waterproofing insulation.

Unfortunately, just like your gutters or downspouts above ground, underground downspouts can clog over time. They are harder to maintain, which may deter some homeowners from installing them even if they are advantageous. Another disadvantage is their inability to be serviced.

During severe rain seasons, these downspouts work great on properties that encounter more controllable flooding. If you have to regularly drain huge volumes of stagnant water from your basement, you should invest in a more durable, heavy-duty waterproofing system.

Tips On Installing Underground Downspouts

Most people want to jump in and take on installation jobs without experience to save time and money. 

But unfortunately, this trend can lead homeowners like yourself to worsen their flooding situation than it already was and potentially damage non-problem areas.

Today’s Homeowner Tips

When you’re considering waterproofing your home, the best thing to do is reach out to a professional contractor specializing in the field. 

Often, these contractors will provide you with an inspection that’s free of charge and give you advice as a reference to base the installation budget of your underground downspouts.

That said, if you choose to invest in having them installed, the installation procedure isn’t especially strenuous. Depending on the area your house and lawn take up, your average contractor would be able to get your downspouts installed within a day or two.

How To Unclog An Underground Downspout?

If you notice high moisture levels in your home, overflowing gutters, water buildup around the trench lines, that means it’s time to clean it out. In addition, you will need to clean and maintain other drainage systems to prolong your protection against flooding and other water damages.

Leaving your underground downspouts clogged exposes you to risk and potentially causes what you were preventing from happening in the first place, like water buildup in the basement.

Today’s Homeowner Tips

Cleaning your underground downspouts can be a chore. But if you don’t think you can manage it yourself, you can call a professional to unclog them for you.

The process typically involves the following steps:

  1. First, you want to detach the drain.
  2. Then, insert a plumber’s auger into the downspout to start cleaning.
  3. Next, twist it until you feel the debris gather on the tool.
  4. Once you feel like you’ve gathered enough debris, pull the tool back out and repeat this process as you move on to step 5.
  5. To ensure water runs easily through the pipes, clean up your gutters using a garden hose.

The Takeaway

If you don’t know whether to install underground downspouts, consider the pros and cons. Even if not all the things discussed do not apply to most people, it’s a good thing to consider.

Remember that if you notice any water problems, you need to check if your drainage system needs repair. Additionally, you can seek help from professionals in your area.

Editorial Contributors
avatar for Matt Greenfield

Matt Greenfield

Matt Greenfield is an experienced writer specializing in home improvement topics. He has a passion for educating and empowering homeowners to make informed decisions about their properties. Matt's writing focuses on a range of topics, including windows, flooring, HVAC, and construction materials. With a background in construction and home renovation, Matt is well-versed in the latest trends and techniques in the industry. His articles offer practical advice and expert insights that help readers tackle their home improvement projects with confidence. Whether you're a DIY enthusiast or a seasoned professional, Matt's writing is sure to provide valuable guidance and inspiration.

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