Common Shingle Roofing Issues in Missouri and How to Fix Them

Big Bear Roofing • January 24, 2025
A person is welding a piece of foam on a roof.
A roll of roofing material is sitting on top of a wooden roof.

Is your shingle roof showing signs of wear and tear? Living in Missouri means dealing with extreme weather, from scorching summer heat to harsh winters, which can cause significant damage to your roof. As a homeowner in St. Louis or surrounding areas, it's essential to be aware of the common shingle roofing issues that can affect your home and understand how to fix them before they lead to more significant problems.


At Big Bear Roofing, we’ve seen it all—from curled shingles to leaks—and we’re here to guide you through common roofing issues and how to address them. Whether you're dealing with roof leaks, cracked shingles, or shingle granule loss, this guide will help you identify the problem and take the necessary steps to fix it.


1. Roof Leaks: The Most Common Shingle Roofing Issue


What Causes Roof Leaks in Missouri?


Roof leaks are one of the most common issues with shingle roofing in St. Louis, MO. The hot summers and cold winters in Missouri can cause shingles to expand and contract, leading to gaps that allow water to seep through. Roof leaks often begin around vents, chimneys, or valleys where shingles overlap. When these areas are compromised, water can enter and cause significant damage to your home’s interior.


How to Fix Roof Leaks


Fixing roof leaks requires prompt attention to prevent water damage to your attic and walls. Start by inspecting your roof for missing, cracked, or damaged shingles. If you spot a problem, you may need to replace the shingles or reseal the damaged areas.


For more significant issues, you might need a professional roof inspection from a trusted St. Louis roofing contractor like Big Bear Roofing. Our experienced team can assess the damage, repair your roof, and ensure the leak is sealed correctly.


2. Curling Shingles: A Sign of Aging or Improper Ventilation


Why Do Shingles Curl?


Over time, shingles can start to curl, either at the edges or at the middle. Curling can be caused by several factors, including aging, poor attic ventilation, or moisture damage. When shingles curl, they become less effective at shedding water, making your roof more susceptible to leaks and damage from wind.


How to Fix Curling Shingles


If you notice curling shingles, it’s important to act fast. Proper attic ventilation is key to preventing this issue. If your attic isn’t properly ventilated, heat and moisture can build up, leading to premature aging of the shingles.


Replacing curling shingles is a relatively simple fix. However, it’s crucial to ensure that the roof deck underneath is in good condition and that there’s adequate ventilation. If you’re unsure about how to handle curling shingles, contact Big Bear Roofing for a professional roof inspection.


3. Missing Shingles: Wind and Storm Damage


How Do Shingles Go Missing?


Severe storms and strong winds are common causes of missing shingles in Missouri. When winds exceed a certain speed, shingles can become dislodged, exposing your roof to water damage. Missouri’s unpredictable weather means your roof is at risk of losing shingles at any time of year.


How to Fix Missing Shingles


If you find missing shingles after a storm, it’s essential to replace them as soon as possible to prevent leaks. First, locate the right shingles to match the existing roof, ensuring the color and material are identical.


In some cases, repairing a roof with missing shingles may require the replacement of several shingles. If you're not comfortable with climbing on the roof, it's best to leave the job to professionals like Big Bear Roofing. We can replace missing shingles quickly and efficiently, ensuring your roof is protected from the elements.


4. Cracked Shingles: Impact of Hail and Temperature Fluctuations


Why Are Shingles Cracking?


Hailstorms are another culprit behind cracked shingles in Missouri. Even small hailstones can cause damage, especially if the shingles are already aging. Extreme temperature fluctuations can also lead to cracking as shingles expand and contract under the heat of the sun and the cold of winter.


How to Fix Cracked Shingles


If you spot cracked shingles, it’s important to replace them quickly. Cracks can allow water to seep through, causing leaks and mold growth. For minor cracks, some homeowners opt for roof sealants, but the most reliable solution is to replace the cracked shingles entirely.


Our team at Big Bear Roofing can quickly assess the damage, remove cracked shingles, and replace them with new ones that match your existing roof. We'll also check the rest of your roof to ensure no other shingles are cracked or compromised.


5. Granule Loss: Your Roof’s Wear and Tear


What is Granule Loss?


As shingles age, they lose the mineral granules that help protect your roof from UV damage. Granules also act as a shield against rain, wind, and hail. Over time, you may notice granule loss in your gutters or at the base of your roof. While some granule loss is normal, excessive loss can indicate that your roof is nearing the end of its lifespan.


How to Fix Granule Loss


Granule loss typically signals that it's time for a roof replacement. While there’s no way to fix granule loss, you can slow the process by maintaining your roof. Regular roof inspections by a professional can help you detect early signs of wear and ensure that your roof lasts as long as possible.


If your shingles are losing granules at an alarming rate, it’s time to consider a roof replacement. Contact Big Bear Roofing for an evaluation and quote for new shingles that will provide long-lasting protection for your home.


6. Roof Moss and Algae: Missouri’s Humid Climate


Why Does Moss Grow on Roofs?


Missouri’s humid climate is perfect for the growth of moss and algae on shingles. These organisms thrive in areas with constant moisture, which can lead to roof damage over time. Moss can trap moisture against your shingles, leading to rot and premature wear.


How to Fix Moss and Algae Growth


To remove moss or algae, you can gently scrub the affected areas with a cleaning solution specifically designed for roofs. It’s important to avoid using harsh chemicals that could damage your shingles. For persistent problems, you may need to replace the affected shingles.


Prevent future growth by ensuring proper roof drainage and trimming nearby trees to increase sunlight exposure. A professional roof cleaning service can help remove moss and algae without causing damage.


Why Choose Big Bear Roofing for Your Roof Repair Needs?


At Big Bear Roofing, we’re proud to serve homeowners in St. Louis and surrounding areas with expert roof repair and roof replacement services. Our team of skilled contractors is experienced in handling all kinds of shingle roofing issues, from leaks and curling shingles to granule loss and moss growth.


We offer reliable, fast, and affordable roofing solutions to ensure that your home stays protected from the elements. Whether you need a quick fix for a small problem or a complete roof replacement, you can trust us to provide high-quality service.


Contact Us Today!


If you're experiencing any of these common shingle roofing issues, don’t wait until they turn into bigger problems. Contact Big Bear Roofing today for a free roof inspection and repair estimate. We’re here to help you keep your home safe, secure, and dry.


Call Big Bear Roofing at (314) 350-7378 or visit https://www.bigbearroofingstl.com/ for expert roofing services in St. Louis, MO.



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While it still feels like winter here in Missouri, Spring is just around the corner – and with it a new challenge for your roof – spring storms. Heavy rain, strong winds, hail, sleet, and even tornadoes can wreak havoc on your home (particularly your roof) during this season. Your roof is your home’s first line of defense against the elements so it is crucial to inspect it after a storm to catch potential damage early. At Big Bear Roofing , we know just how much storms can affect your home’s roof – and we know how important it is to act quickly when dealing with roof damage. After a storm, we will repair your roof quickly and have you back to feeling safe and secure in your home. How Spring Storms Impact Your Roof In Missouri, spring storms can be unpredictable and intense. It’s important to be prepared beforehand, but even preparedness doesn’t always stop unexpected debris and other hazards caused by extreme weather conditions. Common ways spring weather can damage your roof: 1. High Winds Storms often bring strong winds that can lift, loosen, or completely remove shingles. Beyond the direct damage that wind can cause your roof, it can also blow debris (like tree branches) onto your roof, causing punctures or cracks. Over time, missing shingles can expose the underlying structure of your home, leading to leaks and expensive structural damage. The most cost-effective option for Missouri homeowners is to fix these issues before they become major problems for your roof and your wallet. 2. Heavy Rain The consistent, heavy rainfall that often accompanies Missouri’s spring storms can wear down roofing materials (especially if your roof is more than ten years old). Additionally, if your gutters are clogged or damaged, water may pool on your roof, increasing the risk of leaks and water damage inside your home. 3. Hail Damage In the spring, hailstorms are common in Missouri and can cause significant damage. 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