A downspout drain is a drainage system that catches rainwater flowing off a roof and channels it safely away from the house. It connects directly to the vertical downspout pipe of your gutters and redirects thousands of gallons of water away from the home's foundation to prevent flooding, mold, and soil erosion.
The average cost to install downspouts is $30 to $75 per downspout. Total downspout replacement costs $220 to $625 for 4 to 5 downspouts. Adding new downspouts costs $2 to $4 per linear foot installed. Burying downspouts with a drainage system costs $150 to $350 each.
This involves measuring gutter outlets, cutting downspouts to fit, fastening them into place with brackets every 6-8 feet, and attaching extensions to guide water away from your foundation for 4-6 feet. Basic tools and a regular homeowner will get the job done in 2-4 hours per downspout.
The Downspout Is Clogged
Debris like leaves, twigs, and animal nests can accumulate inside, creating clogs that prevent the free flow of water. These clogs typically start with a small object getting caught, which accumulates debris around it over time, potentially leading to a significant blockage.
Bury your gutter drainage pipes at least 12-24 inches deep, with northern regions requiring depths of up to 4 feet to prevent freeze damage. Your local frost line should determine minimum depth, while soil composition and traffic patterns may necessitate deeper installation.
Downspout alternatives replace or augment standard metal drainpipes. Top options include decorative rain chains that guide water into basins, rain barrels for water harvesting, French drains and dry wells for below-ground dispersal, or grading/bioretention to let water sheet naturally away from your foundation.
Clogged Downspout: How to Unclog a Gutter Downspout?
When to Replace Downspouts. Typically, downspouts last as long as your gutters (about 20 years for aluminum). Damage or poor performance may require them to be replaced sooner.
Avoid These Mistakes When Installing Gutters - Size, Seams & More
At the bottom of a gutter downspout, you should install a splash block, a downspout extension, or connect it to an underground drainage pipe. The goal is to channel rainwater away from your home's foundation to prevent soil erosion and basement water damage.
The best way to divert downspout water depends on your yard's layout, but extending the runoff at least 3 to 5 feet from your home's foundation is the golden rule. The most effective and popular approaches range from quick temporary fixes to permanent landscape redesigns.
Standard roofing contracts usually just cover roofing materials and labor for the roof itself, although they may offer gutter evaluation or reattachment of existing gutters. But new gutters, downspouts, or gutter guards generally come as additional options or upgrades.
The traditional installation process often stretches to 3-4 hours due to complex cutting requirements, multiple specialized tools, and trial-and-error fitting. However, recent innovations in downspout design have slashed installation times dramatically.
The best pipe for downspout drainage depends on whether you are running a surface extension or burying the line. For underground downspouts, solid PVC and solid HDPE corrugated pipe are the top choices. Avoid perforated pipe and thin-walled sewer pipes that can collapse under pressure.
Many new homes are built without gutters primarily to cut construction costs, as builders assume buyers can add them later. However, they may also be omitted intentionally if the home features deep, extended roof overhangs, perfectly sloped natural grading (the slope of the yard), or if it is located in an arid climate where heavy rainfall is rare.
Look/Style
The wider the fascia, the smaller the gutter will look. So, if your fascia is 1”x6” you are most likely going to install 5-inch gutters. If your fascia is 1”x8” or 1”x10” you are going to need 6-inch gutters to keep everything looking proportional.
In rare, extreme downpours where streets begin to flood, it is normal for gutters to overflow because the sheer volume of water simply exceeds the system's capacity. However, during standard heavy rain, properly maintained gutters should channel the water without cascading over the sides.
Clean your one-story-high gutters right from the ground with an old paint roller on an extension handle. It's angled just right to push leaves and debris out quickly and easily.
Is It Good To Remove Downspouts In Winter? No, removing your downspouts and installing them again can be costly and may cause more damage to your drainage system. Alternatively, you can ask our licensed plumber to help repair and clean your downspouts before winter.
When gutters are clogged with debris, water can't drain properly. Instead of being directed away from your home, it spills over the sides, running down exterior walls and pooling around the base. Over time, this can cause paint to peel, siding to rot, and water to seep into the foundation.
Yes, Dawn dish soap can help unclog drains, but primarily only for minor blockages caused by grease, soap scum, or oily residue in kitchen and bathroom sinks. Its powerful degreasing properties work to break down the fats causing the restriction, especially when paired with hot water.
While it's a great option to keep driveways and sidewalks ice-free during winter, rock salt is unsuitable for gutters. Salt, in general, no matter what kind, is corrosive in nature. When it comes in contact with metal, salt will wear it away over time and cause the metal to become weaker.
Baking soda and vinegar do not effectively unclog drains. Instead of clearing debris, mixing them chemically neutralizes both ingredients into salt water. The fizzing reaction is visually satisfying but largely escapes upwards, offering zero power to dissolve grease, hair, or stubborn sludge.