Rain gutters and downspouts are a crucial part of a home's exterior, but many of us don't give them much thought until a problem arises. A well-designed and properly installed rain gutter downspout system can prevent water damage, erosion, and other issues.
The purpose of a rain gutter downspout system is to collect and direct rainwater away from your home's foundation. This is especially important in areas with heavy rainfall or poor drainage.
A typical rain gutter downspout system consists of three main components: gutters, downspouts, and leaders. Gutters are the channels that collect rainwater, downspouts are the pipes that carry water away from the gutters, and leaders are the pipes that direct water away from your home's foundation.
Proper installation is key to a rain gutter downspout system's effectiveness.
Broaden your view: Parts of a Rain Gutter
Elbow Types and Installation
A-style downspout elbows are perfect for directing water away from the house when you have grass, gravel, or mulch directly beneath the downspout.
You can identify A-style downspout elbows by their direct facing, which deposits water underneath the downspout.
B-style downspout elbows are great for redirecting water away from directly underneath the downspout, allowing you to turn the flow left or right.
To attach downspout elbows, use screws or pop rivets, attaching them to the downspout and the gutter's drop.
It's not necessary to use the same type of elbow on both the bottom and top of the downspout, you can mix A-style and B-style elbows to suit your needs.
You can find gutter elbows at the bottom of your downspout, influencing the direction water flows away from the house by coming in different types, sizes, and angles.
Intriguing read: Rain Gutter Elbows
Elbow Angles and Placement
An A-style downspout elbow is a great option when you have grass, gravel, or mulch directly beneath the downspout and don't need to re-direct it in any direction other than away from the house.
Downspout elbows also come in a variety of angles to adjust the flow of water, including 45-degree elbows that are usually used on the upper parts of downpipes to provide enough of an angle to increase the velocity of the water and reduce clog formation.
The 45-degree angle helps to prevent clogs around the gutter outlet, where the downspout is connected to the gutter system.
A B-style downspout elbow is excellent for redirecting the flow of gutter water away from directly underneath the downspout because it can turn left or right.
Elbow Angles
Downspout elbows come in a variety of angles to adjust the flow of water.
The 45-degree elbows are usually used on the upper parts of downpipes to provide enough of an angle to increase the velocity of the water.
Using a 45-degree elbow can help reduce clog formation around the gutter outlet where the downspout is connected to the gutter system.
You can turn a B-style downspout elbow to the side and see if the flat pipe part of it is facing you to differentiate it from other types of elbows.
B-style elbows can turn left or right, making them excellent for redirecting the flow of gutter water away from directly underneath the downspout.
Downspout elbows, including B-style and A-style, can help you redirect water flow to more convenient areas, such as grassy spots instead of driveways.
A-Style downspout elbows deposit water underneath the downspout, making them a great option when you have grass, gravel, or mulch directly beneath the downspout.
Placement Rules
You should install a downspout for every 40 linear feet of gutter to prevent water from overflowing onto the concrete surface and seeping into your home's foundation and basement walls.
A downspout should not be placed near the foundation of a home.
Installing downspout extensions is a good alternative if changing the gutter downspout locations isn't an option.
Downspouts should generally relocate the water's discharge point at least four feet farther from your home.
Materials and Colors
Downspout elbows can be made from a variety of materials including aluminum, copper, or vinyl. The color and material of the elbows should match the color and material of the gutters.
Aluminum is a popular choice for downspouts due to its durability and resistance to corrosion. In fact, the majority of downspouts are constructed of aluminum, galvanized steel, or PVC.
Downspouts can be made from materials that don't contain mercury, lead, or volatile compounds that can harm the environment. This includes aluminum, galvanized steel, or PVC.
Here are some common materials used for downspouts:
- Aluminum
- Galvanized steel
- PVC
It's essential to choose downspout materials that match your gutters to maintain a cohesive look. Downspout elbows can be made from the same materials as your gutters, including aluminum, copper, or vinyl.
Installation and Maintenance
Installing gutters for your home may seem like a straightforward enough task, but it can be quite an involved process that requires precision and attention to detail. Our team at Ned Stevens is fully certified and insured to handle this task for you.
It's essential to consider everything from the size of your gutters to the materials that will be used. Most homeowners understand the purpose of gutters, but it's also crucial to determine the precise length of your rain gutter downspout.
To maintain optimal water flow, remove leaves, trash, and silt from your gutters and downspouts at least twice a year, in spring and autumn. Regular inspections can help prevent costly water damage.
Installation Rules
Installing gutter downspouts requires some planning and effort, but it's doable with the right approach. First, you need to determine the precise length of your rain gutter downspout.
To attach the downspout to the gutter, you'll need to consider several factors, including the specifics of your home and gutter system.
The distance between downspouts is also crucial, as it affects the overall flow of water and the potential for clogs.
Take a look at this: Roof Gutters and Downspouts
Maintenance Rules
Cleaning your gutters and downspouts at least twice a year is crucial for maintaining optimal water flow. Remove leaves, trash, and silt to ensure a clear path for water to flow freely.
Inspect your downspouts regularly for cracks, dents, or loose parts. Repair or replace damaged portions right away to avoid leaks and obstructions.
After a big storm, inspect your downspouts for clogs and use a plumber's snake or a lawn hose with a high-pressure nozzle to remove debris. This will prevent backups and ensure water flows smoothly.
Check the links between gutters and downspouts for leaks, as water might seep into your home's foundation. Leaking joints can cause costly damage and foundation problems.
Downspouts should have a moderate slope from the gutters to the ground, allowing water to flow freely and preventing backups. This slope is essential for proper water flow.
Place downspouts at your home's corners and where water naturally collects to deflect rainwater away from the base of your house. This will prevent water from accumulating and causing damage.
Keep downspouts at least 6 feet away from your home's foundation to prevent water from entering the foundation or crawl area. This will help maintain a dry and safe crawl space.
Broaden your view: Rain Chains vs Downspouts
Installation Services
Installing gutters for your home may seem like a straightforward enough task, but it requires precision and attention to detail. Our team at Ned Stevens is fully certified and insured to provide top-notch gutter installation services.
We understand that gutter and other house issues can arise quickly and unexpectedly, which is why we're open seven days a week and offer same-day scheduling for your convenience. This way, you can get the help you need right away.
At Ned Stevens, we put customer satisfaction and high-quality work first, and our exceptional service and results are backed by over 2,000 five-star reviews and an A+ rating from the Better Business Bureau.
Job
The job of your downspout is to displace all the water your home's gutters collect and place the stormwater away from the foundation of your home in designated areas.
Downspouts work by using a 300% increase in water displacement due to the wider raindrop outlet where the downspout connects, thanks to the law of physics (Bernoulli differential) and the use of 3×4 inch downspouts.
Your downspout's goal is to move water away from your home as fast as possible, but if your gutters aren't maintained and cleaned, they won't work if backed up.
Installing the right size downspouts for your home is crucial, and using 6-inch gutters with 3×4 inch downspouts is a good rule of thumb, as it allows for more rainwater to be handled during heavy rains.
Frequently Asked Questions
How far from the house should downspouts be?
Divert downspouts at least 4-6 feet away from the house, and 6 feet away from basement walls for added protection
What is the rule of thumb for downspouts?
For most homes, the general rule is one downspout for every 20-30 feet of gutter, but this can vary based on roof pitch, rainfall volume, and gutter capacity.
How do you unclog a rain gutter downspout?
To unclog a rain gutter downspout, insert a drain unclogging tool from the top or bottom and turn it clockwise until it reaches the other end. Pull the cable back to check if it removes the clogging material.
Sources
- https://nedstevens.com/blog/gutter-downspout-elbows-types-and-applications/
- https://mygutterguru.com/gutter-downspout/
- https://artofgutter.com/blogs/news/gutter-downspout-rules
- https://apollohome.com/blog/protecting-your-home-understanding-placement-of-downspouts/
- https://www.forbes.com/home-improvement/gutter/gutter-sizes-guide/
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