Top 10 Downspout Extensions
for December 2023

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Downspout extensions are easy to install, and they can make your gutters and downspouts more efficient. They're also great for preventing runoff from leaking into your yard or driveway.

Downspout extensions come in a wide variety of styles and materials. Some are made of aluminum, while others are made of copper. Some extend just a few inches, while others extend 5 or 6 feet. Some extensions have fasteners, while others rely on hooks and clips.

Downspout extensions come in a variety of lengths, so you'll need to measure your gutters to make sure you're getting an extension that's the right length.

Our tests evaluate downspout extensions for durability, ease of use, and installation. We score durability based on how strong the extension is, how well it holds its shape, and how well it's made. We also look at how easy it is to install, including whether it's difficult, easy, or requires a professional.

1
9.6
SCORE
Amerimax 12-in. No Dig Low Profile Catch Basin Downspout Extension Kit, Black

Amerimax 12-in. No Dig Low Catch Profile Basin Downspout Extension Kit

by Amerimax

Made with a durable resin that can withstand all outdoor elements

The Amerimax No Dig Low Profile Catch Basin Downspout Extension Kit is expandable, so you can easily add additional extensions as your needs grow. The catch basin is made of durable plastic, so it's resistant to rust and damage from freezing and thawing. The drain pipe is made from flexible plastic, so it bends easily around landscaping. The kit comes with a cap to close off 1-hole in 1-drain location, and 8 feet of 2-inch flexible pipe to prevent water and foundation damage by diverting it away from landscaping. The catch basin can be buried up to 12 inches deep, and it's small enough to be hidden by mulch, straw, or other landscape cover. The included instructions are clear, and installation is fairly straightforward. The catch basin comes with three 2-inch-diameter downspout adapters, so you can easily adapt it to your existing downspouts. The catch basin also comes with a 1-year warranty, and Amerimax offers lifetime technical support.

2
9.5
SCORE
Low Profile Downspout Drainage Extension Adapter Kit

WholesalePlumbing Low Profile Downspout Extension Drainage Adapter Kit

by WholesalePlumbing

Fits All Standard Downspouts - Rigid Design Won't Collapse

The Low Profile Downspout Drainage Extension Kit from NH Builders Supply is designed to divert water away from the foundation of your home. The kit comes in three different lengths, and they stack together, so you can choose the length that best meets your needs. The kit consists of interlocking sections made of yellow plastic, and each section is 6 inches wide, 8 inches long, and 3 inches deep. The sections can be stacked together at any height. The kit has an overall length of 8 feet. The sections connect to each other using plastic connectors. The connectors have locking tabs, so they don't slide off. The kit is easy to install, and it's made of sturdy plastic that will last for a long time. The kit is designed to be used with heavy rain. It's designed to help keep water away from your foundation and to prevent erosion near your foundation. The kit is also designed to resist corrosion. The Low Profile Downspout Drainage Extension Kit is a great product, and it's easy to install.

3
9.2
SCORE
HomeBuddy Gutter Downspout Extension - 2 Pack Downspout Splash Block, Durable and, Stackable Rain Diverter from Recycled Plastic - Plastic Screws for Ground Included

HomeBuddy Gutter Downspout Extension

by HomeBuddy

EASY-USE - No need for professional installation! These downspout extenders 2-piece construction is super-easy to assemble & store. Youll have them ready in seconds!

Rain gutters are an important part of any house. They divert water away from the house, helping to prevent costly flooding and make the house more structurally stable. Unfortunately, many gutters are undersized, which can cause water to back up into the foundation and damage it. HomeBuddys downspout splash block is a simple, affordable solution to this problem. The downspout extenders attach to the gutters with a screw, so you can add them without destroying your gutters or yard. The splash blocks are curved, so they'll fit snugly in the gutter and keep the water flowing straight out. The downspout extenders also have wings that keep them from tipping over, and long enough legs that keep them from sitting right against your house. The splash blocks have feet which keep them from sinking into the ground, and long legs which keep them from sitting flush against the foundation. The downspout extenders, splash blocks, and screws are made from recycled, durable plastic. The HomeBuddy gutter downspout extension set is both affordable and functional.

4
9.1
SCORE
2 Pack Decorative Gutter Downspout Extension, Rain Gutters Downspout Splash Block, Down Spout Extender, Drain Gutter Guard Diverter, Stakes for Cement Floor and Lawn Included, Matte Black

Jamphaza 2 Pack Gutter Decorative Downspout Extension

by Jamphaza

EASY to USENo need for professional installation! Simply place the splash block directly under the gutter downspout and adjust the angle to ensure it slopes down and away from, not toward your house.

This downspout extension is inexpensive, but it's well-made and looks great. It attaches easily to the downspout, and the stake holes are large enough to accommodate just about any type of stake. The extension itself is over a foot tall, and it's long enough to work in most homes that have a 3- or 4-inch downspout. It really does divert water away from the house, and it keeps water from washing a hole in the yard. The extension is a solid, quality piece of hardware, and it's easily the best rain gutter guard we've ever tested.

5
8.8
SCORE
Oglarc Owl Gentleman Gutter Guardian Rain Downspout Extension Statue Polyresin, Full Color

Oglarc Owl Gentleman Gutter Guardian Downspout Rain Extension Statue Polyresin

by Oglarc

High Quality Material: This owl downspout is handcrafted made of durable resin which is covered with a UV resistant full color finish. With the trait of dust proof and weather proof do not cracking.

The Owl Gutter Guardian rain diverter statue is a solid choice for home gardeners who want a rain diverter that also doubles as a lawn ornament. This statue is lightweight, easy to move, and looks great with the included stand, which holds it upright. The owl is sturdy and well-constructed, and we liked that the statue comes with screws that can be used to fasten it to the stand (we never found any that stayed in). The diverter, which is made of polyresin, is colorful and decorated with yarn, grass, and leaves. It diverts most rain down to your gutter, but if you happen to get a lot of rain, it will direct the water into your yard instead of your gutter. This diverter is still better than not having a rain diverter, and it's a useful addition to any gardener's arsenal.

6
8.6
SCORE
Amerimax Green Flexible Downspout Extension Gutter Connector Rainwater Drainage

Amerimax Green Flexible Downspout Gutter Extension Connector Rainwater Drainage

by Amerimax

FLEXIBLE IN MANY WAYS - Flexible design easily bends and holds its shape while its corrugated design enables you to bury, connect and bend the extension.

The Amerimax Green Flexible Downspout Extension Gutter Connector is a durable vinyl gutter attachment that can extend downspouts from 25 to 55 inches. The extension fits most 2-inch x 3-inch and 3-inch x 4-inch downspouts. The gutter connector prevents rainwater from running off of your gutter and leaking into your basement or landscaping. The extension comes with everything needed to install the gutter connector. The gutter connector features an easy-to-use silicone connection, so it's easy to install and remove. The Amerimax Green Flexible Downspout Extension Gutter Connector is easy to install. The gutter connector features an easy-to-use silicone connection, so it's easy to install and remove. The Amerimax Green Flexible Downspout Extension Gutter Connector is durable. The gutter connector features a durable vinyl construction, so it's built to last. The gutter connector features a 10-year warranty.

7
8.6
SCORE
Amerimax White Flexible Downspout Extension Gutter Connector Rainwater Drainage

Amerimax White Flexible Downspout Gutter Extension Connector Rainwater Drainage

by Amerimax

FLEXIBLE IN MANY WAYS - Flexible design easily bends and holds its shape while its corrugated design enables you to bury, connect and bend the extension.

On paper, the Amerimax White Flexible Downspout Extension Gutter Connector looks like it could solve several problems. It extends downspouts from 25 to 55 inches, so it should be able to divert more water away from a house's foundation than a shorter extension would. The 8-inch width means that the gutter connector should fit most downspouts, and it's color coordinated with your home's exterior. In practice, however, the Amerimax downspout connector didn't perform as well as we expected. The connector is made of plastic, and its joints are clearly made with heavy-duty tubing, so it's built to last. But although it's flexible enough to work with most downspouts, the connector was too stiff for our 2-inch x 3-inch downspout. And our 3-inch x 4-inch downspout wasn't as flexible as the connector's design suggests, so the connector couldn't extend all the way to the end of it. The Amerimax downspout connector costs about $20, which is significantly less than some of our other picks, but it's definitely not an ideal solution.

8
8.6
SCORE
Amerimax 2-Pack Brown Flexible Downspout Extension Gutter Connector Rainwater Drainage

Amerimax 2-Pack Brown Flexible Downspout Gutter Extension Connector Rainwater Drainage

by Amerimax

FLEXIBLE IN MANY WAYS - Flexible design easily bends and holds its shape while its corrugated design enables you to bury, connect and bend the extension.

The Amerimax Flexible Downspout Extension works well on 2-inch and 3-inch downspouts. It's easy to install, and the downspout connector is flexible, so it won't damage your gutters if you install it incorrectly. The vinyl construction is also durable, and the extension is color-matched to the exterior of your home. However, the connector is not weather-resistant, so you will need to install it in an area where it can dry out when not in use. The Amerimax Flexible Downspout Extension is easy to install and works well on 2-inch and 3-inch downspouts. It's affordable, too.

9
8.6
SCORE
Black Flexible Downspout Extension Gutter Connector Rainwater Drainage, 25 to 55 inches

Amerimax Black Flexible Downspout Gutter Extension Connector Rainwater Drainage

by Amerimax

FLEXIBLE IN MANY WAYS - Flexible design easily bends and holds its shape while its corrugated design enables you to bury, connect and bend the extension.

We don't recommend attaching a downspout extension directly to your home's roof. Doing so could damage your roof and lead to water damage. Instead, we recommend installing an extension onto your roof's gutters. The downspout extension we tested, from Flex Gutters, is made of vinyl, which, according to Flex Gutters, is stronger than aluminum. The extension is 55 inches long, and it extends from 25 to 55 inches. The extension has a rubber gasket along one end, which Flex Gutters says will help keep your roof watertight. The gasket is also useful when attaching the extension onto your gutters. The extension is easy to install. It slides easily onto your gutters' downspouts, and it stays securely in place. The extension we tested was white, but Flex Gutters sells other colors, including black, brown, and green. The extension is inexpensive, but it's less expensive than professional installation, and it's easy to install. The extension we tested was 5.5 inches wide, but Flex Gutters sells other widths, too.

10
7.4
SCORE
Amerimax 2-Pack Green Flexible Downspout Extension Gutter Connector Rainwater Drainage

Amerimax 2-Pack Green Flexible Downspout Gutter Extension Connector Rainwater Drainage

FLEXIBLE IN MANY WAYS - Flexible design easily bends and holds its shape while its corrugated design enables you to bury, connect and bend the extension.

We like the Amerimax 2-Pack Green Flexible Downspout Extension Gutter Connector because it fits most downspouts, is easy to install, and is flexible so you can bend it to fit around obstacles. The connectors are made from vinyl, so it can withstand high winds and rain without damage, and the connectors are long enough to extend from 25 to 55 inches, which is long enough to direct rainwater away from your home's foundation. The connectors are expandable, so you can easily bend them around obstacles. The connectors are gray so they blend in with your home's exterior, but they come in a variety of colors, including black, brown, green, blue, red and white, so you can choose the color that best fits your home's exterior.

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