Common Signs of a Leaky Roof During Winter and How to Spot Them

Jan 02, 2025

Signs of a Leaky Roof During Winter and How to Spot Them

Recognizing early signs of roof leaks and dealing with them when they are minor can save you time and money by preventing major issues. Water penetration may begin small, but over time it can end up causing a great deal of damage if you don’t attend to it. 

Some signs that you have a roof leak are obvious, but others are more challenging to find. Inspecting your roof regularly will help you know what is normal and what isn’t—and possibly save you in the long run. Read on to gain valuable information about the early signs of roof leaks. 

Common Signs of Roof Leaks

Water Stains on Ceilings

If ceiling stains start to show up on the highest floor of your home, they may point to a roof leak. These unsightly blotches are usually tinted brown and seemingly come “out of nowhere.” But the truth is their root cause is a roof leak. Rather than painting over them and moving on, get to the bottom of what caused them. You may have damaged asphalt shingles, compromised flashing around your chimney (a common culprit!), or other vulnerabilities around your roof’s vents. Sometimes faulty seals around skylights cause the roof to leak. Whatever the culprit, it needs to be addressed to avoid further damage. 

A Musty Smell

Stay in touch with your sense of smell, and you’ll be more likely to catch a roof leak sooner rather than later. The source of any smells that are unique to your home should be uncovered so you can deal with the problem while it is small. 

Mold in Your Home 

Mold is a clear indication you have a lot of moisture in your house, and it could be due to a roof leak. If the mold is found in or near your attic, a roof leak is the likely source. When a roof allows water into your home, the attic becomes a breeding ground for unhealthy mold growth. Another cause of mold in your attic could be inadequate ventilation. So, it’s important to get to the bottom of the mold’s source rather than assuming the cause. 

Damaged Plumbing Vent Boots

Plumbing vent boots made with plastic bases may crack, and metal bases may incur broken seams. Inspect the rubber boot that surrounds the pipe. It can rot or tear, allowing water to seep into your house along the pipe.

Damaged Flashing

Severe weather can cause your flashing to loosen and lift. Once flashing becomes compromised, your home is vulnerable to roof leaks. Water penetration caused by flashing can show up in random locations, making tracking the source challenging. That’s why it’s essential that you inspect your roof each season and after any major storms. This simple practice will keep you on top of the situation and ahead of major issues. 

Icicles Hanging from Your Roof’s Edge

Water penetration from your roof may be caused by an ice dam, which is formed when snow thaws over warmer parts of your roof and then refreezes over your cold eaves. Ice dams cause moisture to back up under asphalt shingles. 

Damaged Shingles

If you notice cracked, damaged, or missing asphalt shingles, those are signs you may either have a roof leak, or you have the components that could cause one in the future. Damaged shingles don’t always create a leak. It’s primarily if missing shingles are causing a seam to be exposed that water may be silently and slowly seeping into your roof decking and attic. Don’t risk the problems this can create if left unnoticed. Contact a reputable roofer and have it inspected. 

Tips for Inspecting Your Roof During the Winter

Look Indoors for Signs of Roof Issues

Check your attic. When inspecting your roof, it may feel odd to begin inside your home, but actually that’s a great place to get started! Grab a flashlight and climb into your attic to inspect the underside of your roof—its decking. Look carefully at all the wood on the attic’s ceiling. Is it wet, deteriorating, or showing signs of mold? These are clear indications of a roof leak. Next, look carefully at your attic insulation. Again, if it is wet or moldy, you likely have a roof leak. Are there dark spots in your attic? They’re probably mold. The damaged area is likely in proximity to a roof leak—however, it’s also possible the water was diverted there from a nearby roof issue. 

Observe your paint and wallpaper. When indoor paint or wallpaper starts detaching from the walls of your home, it can be a sign of a roof leak. 

Inspect your ceilings. If ugly spots have appeared on your ceilings, you probably have a roof leak. 

Do a Thorough Outdoor Inspection from the Safety of the Ground

Have a detailed look at your roof’s components. Now that you’ve thoroughly inspected the interior of your home, grab a pair of binoculars and go outside to take a good look at the visible components of your roof. Looked for cracked, damaged, or missing shingles, compromised flashing, or damaged gutters. 

Enjoy Peace of Mind Knowing Your Home Is Well Protected from the Elements with a Reliable Roof

Minnesota winters can be harsh. If your roof is not in pristine condition, you may incur costly, damaging roof leaks. Don’t risk the potential problems that can occur by putting off a professional roof inspection if you suspect your roof is in need of repair or replacement. Get an inspection promptly to avoid further issues.

At Lutgen Companies, with deep roots in Central Minnesota, we understand the region’s unique climate and architectural requirements, ensuring your roof is perfectly suited to its environment.  Our GAF roofing installations are executed with precision and attention to detail, guaranteeing a roof that performs flawlessly and adds aesthetic value to your home. Learn more about how our roofing services ensure your home’s protective layer is in excellent condition so you can rest at ease this winter.