How TO Spot A Leak On A Metal Roof? Top 6 Tips

Metal roofs have gained tremendous popularity in recent years, and for a good reason. They're extremely durable, exceptionally energy-efficient and have an incredibly long lifespan. Though metal roofs are virtually maintenance-free, like any other roofing option, they are not completely immune to leaks and other common damages.

Metals roofs are known for their efficient water flow rather than their waterproofing capabilities. This means that metal roofs cannot tolerate standing water for a long time. When it comes to locating the leaks on a metal roof, the best way is to focus your attention on the specific leak-prone areas. And you should know what types of leaks you're dealing with.

To make the task easier for you, our experts here at Legend Roofs, have prepared this handy guide for you to identify the most damage-prone areas in your metal roofing system. These areas may need more attention and maintenance than other parts of your roof. We will also reveal the best way to detect a leak in your metal roof. Let’s dive right in.

Leaks in a Metal Roof: Warming Signs to Look Out For

1. Rusting - Having a metal roof offers plenty of advantages to the homeowners. However, the one that you have to keep an eye out for is rust. That said, today's metal roofs are highly rustproof and some minor rusting on the surface doesn't necessarily mean that you have a leaky roof.

In absence of basic maintenance and cleaning, rust can deteriorate your metal roof's protective coating, exposing it to weather hazards. This can result in a leak that, if left unattended, can lead to more severe structural problems.

That's why it's crucial to get in touch with an experienced roofer as soon as you discover rust on your roof's surface. A good quality rust inhibitor can also help stop the spread of rust.

2. Fasteners Issues

Fasteners and clips are some of the most popular types of attachment methods used on metal panels. While clips are fastened directly on your roof's purlin, the fasteners are somewhat concealed. Fasteners have rubber washers that can wear out over time, leaving gaps and holes between the washer and metal surface. If not fixed in time, this can make your roof vulnerable to water leaks.

3. Incorrect Roof Movement

If you have a metal roof, you might know that these roofs are designed for some sort of movement to allow water to move away from the roof. Now, if you've undertaken some kind of roof repair work recently, it may interfere with your roof's natural movement and flexibility.

On the other hand, if your roof's movement is still intact but the repaired area is stationary, it can result in a tear that allows water to penetrate your metal roofing system. That's why it's important to consult an experienced roofer before attempting any kind of repair work on your metal roof.

4. Improper Installation or Poor Quality Materials

Proper installation of metal roofs requires skilled roofers that know how to use the right materials and techniques for the best results. In improperly installed roofs, the seams can open up and allow water to seep through your roofing system. Not only can this cause water leaks in your home, but it can also lead to serious structural issues in your home.

5. Holes, Creases, and Crimping In the Roof

These common defects can usually result from excessive foot traffic. A metal roof can suffer dents and creasing in the metal panels. The dented areas can accumulate water that can ultimately lead to holes, leaks, and rust if not controlled in time.

How to Find the Leak in a Metal Roof?

Like any other roofing materials, metal roofs can also develop leaks due to several reasons. In most cases, the usual suspects are: the body of the metal roof, penetrations, transition points, and termination details. Let’s take a look at them in more detail.

1. Leaks in the Roof's Body

A basic visual inspection at regular intervals can help you find leaks in your roof’s body. Look for the following:

• Rust damage

• Holes from debris or weather damage

• Missing, loose, overly tightened, or misaligned screws

• Misaligned Metal panels

2. Roof Penetrations

Roof penetrations, as the name suggests, are the areas where the components like pipes, skylights, vents or chimneys penetrate through the roof. Keep an eye out for the following:

• Cracked flashings or seals

• Presence of gaps in roofing trims. Pay close attention to the areas around the penetrations.

• Deteriorating sealants

3. Transition Points

These are essentially the connection points on a roof. These areas connect two or more sections in a roof. Closely examine the valleys of your roofing system and look for the following:

• Absence of butyl tape or sealant

• Gaps or loose trim

• Misaligned, loose, overly tightened, or missing screws

• Misaligned overlapping of roof panels

4. Termination Details

Any part of the roof that comprises the end point of the metal roofing is called its termination details. This may also include trims and gaps of the roof. Look out of the following:

• Missing or loose caps

• Gutter damage

• Presence of water under the caps

• Decaying sealants

• Flashing damage

Have Questions About Metal Roofing? Get In Touch!

If you are concerned about leaks in your metal roofing system, get in touch with our experienced roofers here at Admiral Roofing. Our skilled and qualified roofers have years of experience installing, repairing, and inspecting almost every type of metal roofing system OK out there. Give us a call at or fill out the contact form to schedule a free inspection and get an estimate today.