The Top 6 Roof Leak Culprits

When it comes to protecting your home from damage, few areas are more critical than your roof. A leak in your roof can contribute to mold growth and water damage to your ceilings and walls–not to mention a massive increase in your stress level. To avoid the need for significant home restoration, call a roofer at the first sign of these notorious roof leak culprits.

Old Age

Depending on the quality of your roof’s shingles, they can have a lifespan of between 15 and 30 years. Some roofs use tile shingles, and these can last between 50 and 100 years. However, over time, these can start to crack and let water leak through. Along with tiles and shingles, there are metal roofing materials. These can last around 50 years, although the lifespan can vary depending upon the quality of the metal you choose. If there are cracks or leaks visible, you’ll want to look into repairing or replacing your roof before inclement weather arrives.


The weather can also be a common reason for a leaky roof, especially if your roof is old or if it was installed incorrectly. High winds can quite literally blow shingles off your roof and expose your home to water damage. Powerful gusts can also blow tree limbs or other debris onto your roof and damage it that way. Additionally, large hail can damage asphalt composite and tile shingles and dent metal roofs.

After any severe weather event, it can pay to inspect your roof to see if you’ll need repairs. It’s also a good idea to trim back the trees on your property year-round so that their branches are less likely to fall on your roof or scrape against it on a windy day.

Cracked Flashing

Flashing is the technical term for the thin, metal pieces that roofers place around a roof’s joints and the chimney. Your roof’s joints are where leaks are most likely to occur, so the metal flashing has the task of keeping water out and away from those places. Over time, wear and tear can start to crack the flashing. Unsurprisingly, any cracks will allow water to begin leaking into your home.

Cracked Chimneys

Many chimneys are built of brick, and over time, the mortar between the bricks can start to develop cracks. Like cracked flashing, a cracked chimney can result in a water leak. The most common source of a chimney leak will be near the flashing that protects the area where the roof and the chimney come together. If you find that you have a leak near your chimney, you’ll want to start looking for any cracks that need to be sealed. You may need to add some mortar or replace some bricks.


Some ranch houses will have no valleys where two different roof segments come together. Many newer homes will be more complex and have valleys where two different sections of a roof meet. Every time a new roof is installed on a house with these valleys, the roofers will seal the valleys. If the valleys are not sealed correctly or if they begin to fail because of age, water can get into your home. Therefore, if you start to see water spots on your ceilings, you’ll want to call a roofer to check for incorrectly sealed valleys.

Clogged Gutters

Gutters can clog because of various debris, from leaves to birds nests. They can also develop ice dams during the winter. Regardless of why water starts to back up in your gutters, it can begin to seep into your home if you don’t take care of the problem quickly. Over time, such leaks will only get worse. Therefore, you’ll want to make sure that you fix small issues before they lead to significant damage and major expenses.

IMPACT Roofing and Exteriors is your leading source for roof repairs in the greater St. Louis area. Whether you need a localized repair to a specific area of your roof or a complete roof replacement, we have the experience to get the job done right. Our professionals can assess any damage to your roof and make a proactive recommendation for you. Give us a call today to get a quote: (314) 310-3605.Categories

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