Roof leaks are every homeowner's nightmare, but knowing where they tend to happen can help you prevent them before they cause major headaches. Let’s take a closer look at some of the most common spots where leaks occur and how you can keep your roof—and your home—safe from water damage.
Pipe Collar Flashings: A Hidden Weak Spot
Pipe collar flashings are those little rubber or metal pieces that seal the area around the pipes coming through your roof. Over time, they can dry out, crack, or wear down, making them a prime spot for water to sneak in. It’s a good idea to check these regularly because if they fail, you might not notice until the damage is done. A little maintenance here can go a long way in keeping your roof leak-free.

Nail Pops: When Nails Cause Trouble
Nail pops happen when roofing nails work their way out of the wood and start to push up through the shingles. When this happens, those tiny holes left behind can let water in, especially during heavy rain. This is one of those issues that might seem small but can lead to bigger problems if not fixed quickly. Keeping an eye out for nail pops and addressing them right away can help you avoid more serious leaks down the road.

Flashing Problems: A Common Culprit
Flashing is the metal or other material used to direct water away from areas where your roof meets other structures, like chimneys or walls. If it’s not installed right, or if it gets worn out over time, flashing can crack, pull away, or become loose, which opens the door for water to get in. Regularly checking and maintaining your flashing can prevent leaks from starting in these vulnerable areas.

Roof Valleys: Where Water Collects
Roof valleys are where two roof planes come together, creating a natural channel for water to flow down. If the valley isn’t properly sealed, water can pool there and eventually seep into your home. This is a common spot for leaks, especially during heavy rains or when snow melts. Making sure your roof valleys are well-maintained and properly sealed is key to keeping your roof in good shape.

Skylights: Bright Idea, but Watch for Leaks
Skylights are great for bringing natural light into your home, but they can also be a source of leaks if they’re not installed or sealed correctly. Water can easily find its way around the edges of a skylight, especially if debris builds up around it. Regularly checking the seals and cleaning around your skylights can help prevent leaks and keep your home dry.

Chimney Leaks: Multi-Surface Headache
Chimneys are another common source of roof leaks because they have so many surfaces where water can get in. The flashing around a chimney is particularly important—it needs to be in good condition to keep water out. If the flashing is damaged or deteriorating, it’s a good idea to get it repaired before it causes a leak that could lead to more significant damage.

Regular Maintenance: Your Best Defense Against Leaks
Preventing leaks before they start is all about regular roof maintenance. Scheduling inspections, especially after significant weather events, and addressing minor issues immediately can save you from costly repairs down the road. Consider investing in a comprehensive roof system like the CertainTeed Integrity Roof System™, which combines waterproofing underlayment, water-resistant underlayment, and high-quality shingles for ultimate leak protection.

How Nest Exteriors Can Help Prevent Roof Leaks
At Nest Exteriors, we know that preventing roof leaks is all about staying ahead of the problem. Regular inspections and maintenance are your first line of defense against leaks. We’re here to help with everything from checking those vulnerable areas like flashing and skylights to fixing any issues before they turn into costly repairs. With over a decade of experience in Northern Virginia, we’ve got the expertise to keep your roof—and your home—protected.
Don’t wait for a small leak to become a big problem. Protect your nest—schedule a roof inspection with Nest Exteriors today!