Downspouts
Downspouts That Actually Move Water Away From Your Home
A gutter system is only as good as its downspouts. Strong Gutters installs properly sized, correctly placed downspouts across Southeast Louisiana — so water drains fast and stays away from your foundation.
The Last Line of Defense for Your Foundation
Downspouts are the vertical pipes that carry water from your gutters down to the ground and away from your home. Without enough of them — or with ones that are undersized or poorly placed — water backs up in your gutters, overflows, and pools against your foundation. In Louisiana's heavy rain season, that's a serious problem.
Styles
Downspout Styles We Install
Rectangular (2×3 & 3×4)
The most common residential downspout profile. Rectangular downspouts are clean, low-profile, and pair naturally with K-style gutters. We install 2×3 for standard runs and 3×4 for high-volume or long runs.
Round (3" & 4")
Round downspouts complement half-round gutters and add a classic look to traditional or historic homes. Available in 3-inch and 4-inch diameters to match your drainage needs.
Corrugated Flex Pipe
Used for underground drainage extensions, corrugated flex pipe connects to your downspout at grade and carries water to a pop-up emitter or drain field away from your foundation.
Decorative Downspouts
For copper gutter systems or high-end homes, we offer round copper and ornamental downspouts that age beautifully and become a design feature of the exterior.
Sizing
Getting the Size Right
Undersized downspouts are one of the most common causes of gutter overflow. The right size depends on your roof's square footage, pitch, and local rainfall intensity.
Handles up to 600 sq ft of roof area. Suitable for most single-story homes with shorter gutter runs.
Handles up to 1,200 sq ft of roof area. Recommended for two-story homes, long gutter runs, and Louisiana's heavy rainfall.
Standard pairing for half-round gutters. Provides excellent flow capacity and a proportional look.
Drainage
Downspout Extensions & Drainage
Splash Blocks
Concrete or plastic blocks placed at the downspout outlet to direct water away from the foundation and prevent soil erosion.
Roll-Out Extensions
Flexible extensions that unroll when water flows and retract when dry — keeping the outlet away from the foundation without a permanent pipe on the ground.
Underground Drainage
Corrugated pipe buried underground carries water from the downspout to a pop-up emitter in the yard — the cleanest solution for foundation protection.
Rain Barrels
Connect your downspout to a rain barrel to collect water for irrigation. We can install diverter kits that route overflow back to the ground when the barrel is full.
Benefits
Why Proper Downspouts Matter
Foundation Protection
Water pooling against your foundation is the leading cause of basement flooding, slab cracks, and costly structural repairs. Properly placed downspouts keep water moving away.
Prevent Gutter Overflow
Too few downspouts — or undersized ones — cause water to back up and overflow mid-gutter, defeating the entire system and soaking your fascia and siding.
Landscape Preservation
Concentrated water discharge erodes soil, kills plants, and creates muddy trenches. Extensions and proper placement spread the load and protect your yard.
Mosquito Control
Standing water in clogged or overflowing gutters breeds mosquitoes. Fast-draining downspouts keep your system clear and your yard dry.
Siding & Paint Protection
Overflowing gutters run water down your siding, causing paint failure, wood rot, and mold. Adequate downspout capacity keeps water in the system.
Curb Appeal
Properly sized, color-matched downspouts look intentional and clean. Mismatched or sagging downspouts are one of the first things people notice on a home.
How Many Do You Need?
Industry standard is one downspout per 20–30 linear feet of gutter, but Louisiana's rainfall intensity often calls for more. We assess your roof area, gutter pitch, and drainage conditions to recommend the right number and placement — never a one-size-fits-all answer.
32 Colors Available
Find Your Perfect Gutter Color
Browse the full Senox collection — Traditional, Armor Tough®, Duel Tone® & Premium Metals
Get a Free Downspout Estimate
Whether you're replacing damaged downspouts, adding more to an existing system, or starting fresh, we'll assess your home and give you a straight answer. No pressure, no upsell.