Installing a Flexible Downspout Extension

Quck answer

To install a flexible downspout extension, follow these steps:

1. Choose the location where you want to install the extension. It should be away from the foundation of your house and direct water away from any structures.

2. Measure the distance between the downspout and the desired location for the extension. This will help you determine the length of the extension you need to purchase.

3. Purchase a flexible downspout extension that matches the length you measured.

4. Attach one end of the extension to the downspout using a downspout connector or clamp.

5. Position the other end of the extension in the desired location and secure it with stakes or weights to keep it in place.

6. Test the extension by running water through the downspout. Make sure the water flows freely through the extension and away from your house.

By following these steps, you can easily install a flexible downspout extension to redirect water away from your home.


If you have purchased a flexible downspout extension, it is likely that you are looking to redirect rainwater away from your foundation. By using a flexible downspout extension, you can redirect rainwater to your garden, flowerbed, or away from your house, avoiding the formation of puddles at the base of your foundation.

Step 1

Locate the end of the downspout extension that matches the size of your downspout. Most flexible downspout extensions have smooth ends on both sides of the accordion-pleated center section. Hold the ends up to your downspout to determine which end fits the downspout size.

Step 2

Extend the downspout extension fully, making sure to remove any kinks and straighten it before installation to prevent damage or detachment from the downspout.

Step 3

Trim the end of the extension that will not be connected to the downspout. Use utility scissors or a box cutter to cut along the marked line on the extension. Once the downspout extension is cut, it is ready to be connected.

Step 4

Take the side of the extension that fits around the drainpipe and slide it onto the drainpipe. It should fit securely without the need for additional clipping. Bend the downspout extension to direct the water flow into your garden or desired location.

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