How Can I Tell if My Roof Has a Leak?

Temperature swings cause roof materials to expand and contract, leading to nail pops. Learn what The Woodlands homeowners should watch for with insights from Perkins Roofing.

Cool, damp winters in The Woodlands encourage algae and moss growth. Learn why it happens, what it means for your roof, and how Perkins Roofing helps protect it.

You don’t need to climb a ladder to catch early roof issues. Learn safe, ground-level signs homeowners in The Woodlands, TX can spot with guidance from Perkins Roofing.

In The Woodlands, winter is one of the smartest seasons to schedule roof maintenance. December and the early winter months offer mild temperatures, lower humidity and fewer storm systems, which makes it easier for roofing professionals to inspect the roof and complete preventive repairs without weather interference. More importantly, winter gives homeowners the opportunity to strengthen their roof before the Gulf Coast enters its wettest period. From sealing exposed areas on metal roofs to replacing worn roof vents and updating flashing, winter maintenance can significantly increase a roof’s resilience and prevent moisture problems long before heavy rain returns. The Woodlands Winter Weather Offers a Window of Opportunity Gulf Coast weather has a reputation for unpredictability, but there is one clear pattern homeowners can trust. December through February typically bring fewer severe storms and fewer long rain systems, creating more workable roofing days, while spring brings sustained rainfall, thunderstorms, hail risk and higher winds. If a roof already has small vulnerabilities such as cracked flashing, loose shingles, deteriorating vent boots or unsealed metal seams, spring weather will reveal them quickly. Scheduling maintenance in December or January means repairs can be completed during mild conditions rather than waiting until leaks develop during the rainy season. Winter Is the Ideal Time to Address Metal Roof Seams and Sealants Asphalt shingle roofs rely mostly on flashing, underlayment and proper shingle overlap for waterproofing. Metal roofs, however, have fasteners, panel joints, ridge caps and end laps that require periodic sealing to prevent moisture intrusion. These areas can become exposed when metal expands during hot weather and contracts in cooler temperatures. Winter is one of the best times to inspect and reseal these components because sealants often cure more evenly in cooler weather. Metal is also in its contracted state, making gaps or separation points easier to identify. Common winter maintenance tasks for metal roofs include: Resealing ridge cap joints Applying sealant to panel seams Replacing or tightening weathered fasteners Repairing gaps around skylights or roof penetrations If these areas are ignored, even small openings on metal roofs can allow water to enter during spring storms. Roof Vents Are Easier to Repair or Replace in Winter Roof vents such as ridge vents, box vents, turtle vents and plumbing boots are among the most frequent causes of roof leaks. Texas summers expose them to harsh sun, heat expansion and UV damage. By winter, many vents begin to show signs of: Cracked plastic Deteriorated or shrinking rubber seals Loose fasteners Lifted shingles around the vent base When the weather cools, shingles lie flatter and ventilation components are easier to inspect. Winter is an ideal time to determine whether vents need to be resealed, reinforced or replaced entirely. Addressing these issues early protects against moisture intrusion once spring rains begin. Winter Is Perfect for Checking and Replacing Flashing Flashing is one of the most important parts of the roofing system because it protects high-risk areas where water naturally tries to enter. This includes chimneys, dormers, sidewalls, valleys and roof penetrations. Winter inspections allow roofers to identify flashing that is: Cracked Rusted Pulled away from the structure Improperly sealed Damaged by wind or debris Gulf Coast storms put heavy pressure on flashing. Once flashing begins to separate or lose its seal, water can travel beneath shingles and soak the underlayment. Fixing flashing issues in winter ensures the roof can withstand months of wet weather without leaks. December Is an Ideal Time for General Roof Health Assessments The roof is under less thermal stress Shingles are more stable compared to summer Attics show moisture problems more clearly Roofers can work safely for longer periods due to cooler temperatures During an inspection, roofers can identify early signs of trouble, such as nail pops, granule loss, lifted shingles, clogged vents or minor punctures from debris. Fixing these issues in December or January prevents them from developing into active leaks during spring. Prepare for Spring Weather in The Woodlands by Scheduling Your Roof Maintenance Today! Winter provides the perfect opportunity to strengthen your roof before the most demanding weather of the upcoming year. Whether you need flashing repairs, metal roof seam sealing, vent replacements or a full inspection, Perkins Roofing is ready to help. Contact Perkins Roofing today at (832) 702-0201 to schedule your winter roof maintenance.

Brick chimneys add charm and character to a home, but they are also one of the most misunderstood sources of winter moisture problems. When temperatures drop and Gulf-region weather turns damp and chilly, many homeowners notice water stains around ceilings, attic framing, or walls near the chimney. Sometimes they even see water dripping during cold snaps or after a freeze-thaw cycle, despite having a roof that appears to be in perfect shape. Because these symptoms resemble a roofing failure, the first instinct is often to assume that shingles, flashing, or underlayment are to blame. But in many cases, the culprit is not the roof at all; it’s the chimney itself. Brick, mortar, and masonry components absorb moisture, and once saturated, they allow water to travel in ways that look exactly like a leak. Why Chimney Leaks Are So Common in Winter Chimneys endure harsher weather exposure than almost any other part of the home. They stand above the roofline, where wind, rain, sleet, and rapid temperature swings during winter cold fronts hit them directly from all sides. Brick and mortar are durable, but they are not waterproof. When the winter climate combines cold nights, high humidity, and fluctuating temperatures, moisture problems become more likely. The main factor contributing to winter chimney leaks is the porousness of masonry, which can absorb moisture from rain and humidity. The material allows water to migrate through bricks and mortar, drip into the attic, and create stains far from the actual entry point. Fluctuating temperatures can also cause expansion and contraction, leading to cracks that worsen the problem. The Hidden Source of “Leaks” Brick and mortar contain tiny pores that naturally absorb moisture. During wet winter weather, these pores fill with water, and low temperatures slow evaporation. As moisture builds inside the chimney structure, it begins traveling inward through the masonry. This can result in: Damp sheathing or rafters in the attic Brown stains on ceilings near the chimney Drips hours after rainfall has stopped Moisture appearing even during light drizzle or mist Because the water originates from the masonry surface rather than the roof system, it trickles into the home unpredictably. This is why masonry-related leaks often confuse homeowners; the roof may be in perfect condition, yet moisture still appears inside. Older chimneys are particularly vulnerable because mortar joints wear down and become even more absorbent over time. Other Chimney-Related Causes of Leaks Failing Chimney Crowns The chimney crown is the concrete “lid” at the top. This prevents water from entering the chimney structure. When it cracks, winter moisture seeps through the top and runs down the interior walls of the chimney stack. Damaged or Missing Chimney Caps Without a cap, rain can enter the flue directly. Water then travels downward inside the chimney and may appear hours later, making the true source of the leak difficult to identify. Flashing Failure Chimney flashing seals the area where the roof meets the chimney. When flashing pulls away, corrodes, or is improperly installed, water can infiltrate during rainstorms. Unlike masonry leaks, flashing leaks typically show a more concentrated stain near the roofline. Expired Waterproofing Many chimneys are treated with breathable waterproofing products that protect against absorption, but these coatings eventually wear off. When they do, the chimney becomes exposed again and begins absorbing moisture at a rapid rate. How to Tell if the Chimney Is Causing the Leak Chimney leaks often have specific patterns: Moisture appears during extended cold, wet weather, not just storms Stains or drips occur even after rainfall ends Water seems to originate higher in the attic or along the chimney structure The shingles around the chimney are dry and undamaged If these signs sound familiar, the chimney is likely the root cause, not the roofing system. Preventing Winter Chimney Leaks Depending on the specific situation, you can call a roofer or chimney repair company to: Apply a vapor-permeable masonry sealant to repel water while letting the brick breathe Repoint deteriorating mortar joints to reduce moisture absorption Repair cracked chimney crowns and ensure proper drainage Install or replace chimney caps to keep out wind-driven precipitation Reinforce flashing and counterflashing for a proper watertight seal Address attic ventilation issues that may trap moisture around the chimney Protect Your Home From Chimney Leaks With Perkins Roofing Winter chimney leaks can be hard to diagnose, but the experts at Perkins Roofing know how to identify whether the problem is masonry absorption, flashing failure or another hidden issue. Contact Perkins Roofing today for a professional chimney assessment by calling (832) 702-0201.

A wet attic or damp ceiling is always a reason to pay attention, but it is not always a sign of an active roof leak. In the Gulf region, where cool nights, high humidity, and sudden temperature swings are common, condensation can create moisture problems that look nearly identical to a leak. Homeowners often climb into the attic expecting to find a clear exterior water entry point, only to discover that the moisture is coming from inside the home rather than outside. Why Condensation Is So Common in Gulf Climates On the Gulf Coast, warm days and cool, humid nights create a perfect environment for attic condensation. When exterior temperatures drop quickly after sunset, the roof deck cools down faster than the moist air trapped inside the attic. As that warm, humid air rises and meets the colder wood surface, it condenses into water droplets. This is similar to how a cold drink “sweats” in summer. During cool, humid conditions, homeowners may notice: Wet or damp roof sheathing Moisture beads forming on nails or metal fasteners Small drops of water collecting on rafters A musty smell that seems to come and go Because this moisture forms directly on the wood, it can look very similar to a leak. Signs You’re Likely Dealing With Condensation Condensation tends to follow specific patterns. If you notice the following, there is a high chance the moisture is coming from inside the attic, not from outside. Moisture appears only after cold nights: If the attic is dry during warm weather but damp after temperature swings, condensation is a likely culprit. The underside of the roof deck looks uniformly damp: Leaks usually produce localized wet spots. Condensation often covers large areas of sheathing. Nail tips appear damp or rusted: Cool attic surfaces and humid air can cause condensation to form on exposed metal fasteners. As that moisture accumulates, it may drip onto insulation or ceilings and mimic a roof leak. No clear entry point exists: Leaks typically trace back to a specific damaged shingle, vent boot, flashing point or roof penetration. Condensation usually has no obvious source. The attic feels humid or poorly ventilated: Little airflow allows moisture to accumulate and cling to cold surfaces. If these signs match what you are seeing, the issue may be ventilation, not a failed roof system. What a “Real” Roof Leak Looks Like A true roof leak means water is entering from outside and requires immediate action. The signs are noticeably different once you know what to look for. Staining on ceilings or walls: Leaks often leave brown or yellow stains as water seeps through drywall. Isolated wet spots: Unlike condensation, leaks usually affect a specific area below the damaged section of roof. Mold growth concentrated in one place: Moisture from leaks creates persistent dampness that leads to mold in a defined location. Visible roof damage: Damaged shingles, lifted flashing, missing shingles, or punctures from falling debris often accompany leaks. Moisture during or right after rainstorms: If wetness appears only when it rains, not on cold, clear nights, you are likely dealing with a leak. Condensation, on the other hand, may show up even after days with no rain at all. Why Misdiagnosing the Problem Can Be Costly Treating condensation like a roof leak may lead to unnecessary roof replacements or repairs that do not address the real issue. Meanwhile, condensation problems can continue to worsen, causing: Mold and mildew Insulation damage Wood rot Poor indoor air quality Premature roof deterioration On the other hand, mistaking a leak for condensation can allow water intrusion to continue unchecked. That can damage ceilings, walls, electrical systems, and structural components. Correct diagnosis is critical, especially in a humid Gulf climate where both issues can occur. How to Prevent Condensation in the Attic Ensure proper ventilation: Ridge vents, soffit vents and baffles help keep air circulating. Reduce indoor humidity: Bathroom fans, kitchen exhausts and whole-home dehumidifiers help limit moisture entering the attic. Air seal attic bypasses: Gaps around light fixtures, ductwork, plumbing penetrations and attic accesses allow warm air to rise into the attic. Add insulation if needed: Proper insulation keeps warm indoor air from reaching cold roof surfaces. When to Call a Professional Because condensation and leaks can look so similar, especially on the underside of roof sheathing, homeowners often need a trained eye to tell the difference. A roofing professional can identify the source of moisture, assess the extent of damage and recommend the right solution before the problem escalates. Get Expert Moisture Diagnosis and Roof Repair from Our Roofers in The Woodlands Whether you're dealing with condensation, a true leak or simply want peace of mind, Perkins Roofing can help. Our team understands the unique climate challenges of Gulf Coast homes and provides accurate inspections, straightforward answers and reliable roof repairs . Contact Perkins Roofing today by calling (832) 702-0201 to schedule your roof or attic evaluation and protect your home from moisture damage year-round.

Heat-to-cool swings cause shingle micro-cracks, brittle sealant, and flashing splits—prime for leaks with first fronts. Schedule an inspection with Perkins Roofing in The Woodlands, TX.

Pre-holiday roof cleaning? Avoid pressure washing, harsh cleaners, foot traffic, and gutter clogs. Book a safe clean with Perkins Roofing in The Woodlands, TX.

Oak leaves and needles clog valleys/gutters, leading to leaks and rot. Schedule a safe clean and roof tune-up with Perkins Roofing in The Woodlands, TX.