How to Install Gutters on a Metal Roof

Installing gutters on a metal roof is intimidating for some DIYers—but it doesn’t have to be. Anyone can do it with the right preparation, installation tools and materials, and a step-by-step approach.

In this article, we’ll provide an overview of how to install gutters on a metal roof. We’ll cover the types of gutters best suited for this type of job, what materials you’ll need, and step-by-step instructions that walk you through the entire process. 

We’ll also provide tips to ensure your job is done correctly and without issues. So let’s get started!

Gutter Hangers 

Installing gutters on a metal roof is a great way to protect your home from damage caused by wind and rain. 

But it’s not enough to simply attach the gutter to the roof—you need to make sure you’re using hangers specifically designed for metal roofing.

Gutter hangers designed for metal roofs are made with corrosion-resistant materials and have a higher tension rating to ensure that they properly secure gutters to the roof. 

They also have special fasteners designed for metal roofs, such as self-drilling screws or specialty clips, so there’s no need for drilling holes in the metal itself.

When selecting gutter hangers for your metal roof, measure the rise and run of your gutters accurately—this will ensure that you get the right length and size of hangers for your application. 

It also helps to pay attention to the type of material used in the hanger, as this will ensure they withstand weathering and corrosion over time.

Risks and Safety Precautions When Installing Gutters to a Metal Roof

Installing gutters on a metal roof can be pretty intimidating. After all, you’re dealing with two large surfaces that move and sway ever-so-slightly and the risk of falling off your ladder. So, it’s essential to take precautions before starting:

  • Wear protective gear – It’s always important to wear proper safety gear when stepping onto a roof, no matter which type of material. Wear gloves, eye protection, and sturdy shoes with good grip.
  • Use ladders safely – Place the ladder firmly on the ground and have someone hold it while you ascend and descend. Also, have someone there if you need assistance while up on the roof.
  • Anchor gutters – Securely mount the gutter system with metal screws or rivets before filling it with water – trust us, you don’t want your hard work ending up in a heap on your property! First, drill pilot holes for ease of installation and better gripping power for the fasteners.

By taking safety precautions, you’ll feel more secure doing a job that can appear daunting at first glance. Following these simple steps will maximize your success and satisfaction upon completion.

Different Types of Gutters for a Metal Roof

When it comes to installing gutters on a metal roof, you’ve got a lot of options. That said, three different types of gutter systems work especially well on metal roofs:

K-Style Gutters

K-style gutters, also known as ogee or OG gutters, have an outward “flare” that allows them to hold more water than other styles of the gutter. They’re easy to install and maintain, making them especially popular for metal roofs.

Half-Round Gutters

Half-round gutters are curved beneath the roof, making them less susceptible to clogs than other types of gutter. They hold as much water volume than K-style gutters. Half-round gutters come in various materials and finishes and can be customized for specific purposes.

Fascia Gutters

Fascia gutters can provide a nice touch for certain styles of homes or buildings but aren’t suitable for all locations. 

Since fascia gutters are installed directly onto the roof’s edge, they’re not recommended for roofs with heavy snowfall or rainfall—water might back up beneath the edge and cause damage to the roof itself. 

Despite this potential issue, fascia gutters have great esthetic appeal and act as more of a decorative accent than anything else.

No matter what type of gutter system you choose for your metal roof, ensure you understand the installation process and the risks associated with each type before you begin.

How to Select the Right Size of Gutter for a Metal Roof

When selecting the right gutter size for a metal roof, you must choose between 1”, 2”, 3”, and 5” sizes. This can be tricky, and a general rule of thumb is that the larger the gutter, the more it can handle volume (and debris) over time.

That said, it’s important to consider factors like:

  • The size of your roof
  • The number of valleys, if any
  • How much water runoff will occur
  • What type of precipitation your area often receives

Plus, you’ll want to consider other specifics like the roofing material, the slope of the roof, and how far away from downspouts water needs to travel. 

All these things should factor in when it comes to selecting the right size gutter for a metal roof.

Different types of gutters may also require different methods of installation. However, typically all sizes can be installed similarly. 

Typically, you will use screws and fasteners designed specifically for metal roofs to attach the gutters securely. Most gutters are lightweight enough not to require additional support with corner or rafter brackets. 

Also, ensure no leaks in or around your gutters by using sealants or tape, if necessary, after installation is complete.

How to Install Gutters on a Metal Roof

Now that you have all the right information on Gutters and safety measures to take, it’s time to begin the actual work: 

Step 1: Choose the gutter type

You’ll want to choose the kind of gutter that best suits your home—vinyl, steel, aluminum or copper. 

These work perfectly fine on a metal roof and will provide years of reliable service. It’s crucial to pick the right materials for the job, so research which one will work best with your particular kind of metal roof before buying.

Step 2: Gather materials and tools

To make sure the project goes smoothly and safely, gather all the necessary tools and materials in one place before beginning.

Make sure you have a measuring tape, leveler, drill, screws, and brackets pre-cut or pre-drilled, depending on what type of gutter system you choose.

Step 3: Install brackets

Next up is installing the brackets that will hold the gutters in place. Begin by measuring where each bracket needs to be installed—about every thirty inches—and use your drill and screws to secure them. Make sure they’re evenly spaced and that they’re level with each other.

Step 4: Attach gutters

Once all the brackets are installed securely, it’s time to attach the gutters. If you purchased pre-cut pieces of the gutter (this might be easiest for DIY-ers), line them up with the brackets and then use

Tips for Avoiding Common Installation Mistakes

Installing gutters on a metal roof can be tricky—if you’re not used to working with metal roofs, you may run into some common issues. 

But don’t worry because we have some great tips to help avoid these issues and ensure your gutters are correctly installed.

Gutter Size

First, start by planning the size of the gutter you’ll install. Is it a big industrial gutter for a big building? 

Or is it a small residential gutter for your home? The size will determine the type of hardware and tools you’ll need.

Gutter Guard

Another important tip is to make sure you’re using the right gutter guard. A gutter guard is essential on a metal roof to prevent leaves and other debris from clogging up the drain pipe or downspout. 

Choose one designed specifically for metal roofs to ensure the proper protection against water damage.

Seamless Gutters

Finally, consider installing seamless gutters instead of traditional ones with seams. Seamless gutters are more durable and can better handle heavy rainfalls than traditional ones with seams. 

Plus, since no seams could come apart, you don’t have to worry about leaks or water damage in the future.


It’s vital to know how to install gutters on a metal roof to help protect your home and preserve its value. 

Following these steps will help ensure you do the job correctly and keep your gutters in good shape for years.

Don’t forget to inspect your gutters regularly and ensure they’re clear of debris and clogs. 

With proper installation and maintenance, your gutters can provide years of protection and value to your home. So don’t hesitate — to install your gutters today and give your metal roof the protection it needs.

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