Guide to Gutter Sizes, Styles, and Materials by Region

Best Gutter Material by Climate and Region

Installing new gutters is a smart way to protect your siding, basement, windows, and foundation from water damage. Most gutters are made from one of these materials:

About 70 percent of all gutters installed today are made from seamless aluminum because it’s lightweight, durable, and cost-effective compared to other types of gutter materials. Aluminum gutters can last 30 years or more when properly installed and routinely maintained. They are acceptable in all climates in the U.S., even states in the Southeast such as Alabama, Florida, Kentucky, and Georgia that usually experience heavy annual rainfall.

Vinyl gutters are a good choice for milder climates and can handle heavy rain. But in areas with cold, snowy winters like the Rocky Mountains or New England, vinyl can become brittle after long exposure to freezing temperatures.

If you live in a tough climate and want extra durability, you might choose galvanized steel, zinc, or copper gutters instead of aluminum. These materials are stronger and last longer.

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Best Gutter Style by Climate and Region

Most homeowners pick either half-round or K-style gutters. Each style has its own pros and cons.

Half-round gutters look like a circle cut in half. They’re common on older homes with historic designs, but they also suit modern homes.

In rainy areas, half-round gutters move water quickly and are easy to clean. But because they’re shallow, they don’t carry as much water as K-style gutters and might not be best for heavy rain. Choosing a wider gutter can help, which we’ll discuss in the next section.

K-style gutters are the most popular type in the U.S. They’re more rigid, so they last longer and are more durable. Their taller shape lets them carry more water than half-round gutters, but they can be harder to clean.

Choosing a gutter style is mostly about personal preference. Both types work well in tough or mild weather if you pick the right size.

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Best Gutter Size by Climate and Region

K-style and half-round gutters usually come in 5-inch and 6-inch sizes, but you can also find 8-inch options. The right size for your home depends on how much rain your area gets.

In 2024, parts of the Gulf Coast got over 64 inches of rain during the year. A standard 5- or 6-inch gutter usually works for this, depending on your roof’s size and slope.

On the other hand, parts of the coastal mountain area of the Pacific Northwest had over 100 inches of rain. While 5- or 6-inch gutters might work, you may need 7- or 8-inch gutters to prevent overflow, depending on your roof’s size and slope.

The northern Great Plains, upper Midwest, and central Texas experienced the least precipitation. Some areas may even do without gutters, but a 5-inch gutter usually prevents rainwater from pooling against your foundation.

The amount of rain your area gets is the main factor in picking gutter size. You should also consider your roof’s size and slope.

A licensed gutter contractor can help you choose the right gutter size for your area and climate.

How to Prep Gutters for Inclement Weather

It’s very important to keep your gutters clear of debris. Leaves, twigs, dirt, and other materials can block water from flowing through the gutters.

Gutter guards are a good way to get your gutters ready for bad weather. These screens cover the top of the gutter and stop debris from causing clogs.

If you don’t have gutter guards, plan to clean your gutters at least once a year, ideally before the rainy or snowy season starts. Check for damage or leaks, and test your gutters by running water from a hose through them.

Finally, check that water from the downspouts doesn’t pool and flows away from your foundation.