ProfessionalDownspout Extension Install

When downspouts dump water right at the foundation, you get wet basements, eroded soil, and concrete damage. A simple extension moves the discharge point several feet away — one of the most cost-effective ways to protect your foundation.

Also known as: downspout extension, gutter extension, downspout diverter, downspout drain extension, extend downspout, gutter drain extension, downspout extender

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What you get

What’s included

Measure and cut extension to appropriate length
Connect extension to existing downspout with elbow fittings
Secure to the ground or grade with stakes where needed
Angle extension to direct flow away from the structure
Check existing downspout connection for leaks

Simple & stress-free

How it works

Assess the drainage path

We look at the grade around the downspout to determine where water needs to go and how long the extension should be.

Fit & connect

We connect the extension to the downspout with the right elbow angle and secure it so it won't shift during heavy rain.

Test & adjust

We pour water down the system to confirm flow and adjust the angle or length if needed.

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Problems we fix

Downspouts discharging directly against the foundation
Erosion trenches dug by concentrated runoff
Wet or damp basement walls after heavy rain
Mulch beds washing out repeatedly below a downspout
Splash marks and staining on the siding near ground level

Good to know

Downspout Extension Install — FAQ

How far should an extension direct water away from the house?

A minimum of four to six feet from the foundation is the general guideline, and farther is better if the grade slopes back toward the house.

What materials are extensions made from?

The most common options are matching aluminum to blend with existing gutters, or flexible corrugated plastic that can snake around landscaping features.

Can I get an extension that folds up when not in use?

Yes — hinged flip-up extensions are available that lie flat when dry and extend when rain pushes water through. They're convenient for areas where you mow close to the house.

Do I need an extension on every downspout?

Primarily the ones closest to basement windows, doors, and foundation walls. We can assess each one and prioritize based on where drainage is actually causing problems.

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