Common Causes of Skylight Leaks and How to Fix Them

Skylights are a wonderful addition to any home, offering natural light, a beautiful view of the sky, and a sense of spaciousness to the rooms they adorn. However, as much as they enhance the aesthetic appeal of your home, skylights can also present challenges, especially when they begin to leak. Understanding the common causes of skylight leaks and how to fix them is essential for maintaining the functionality and durability of these windows to the sky. A skylight leak not only leads to water damage but can also result in costly repairs if left unaddressed. Therefore, it is crucial to be aware of what typically leads to leaks and the steps that can be taken to resolve them efficiently.

Improper Installation as a Cause of Skylight Leaks

One of the most common causes of skylight leaks is improper installation. When a skylight is not installed correctly, gaps or misalignments can allow water to seep through. Often, during the installation process, flashing, which is the metal strip placed around the edges of the skylight to seal it against the roof, may be improperly fitted or even omitted entirely. This weakens the waterproof seal around the skylight and allows water to penetrate, causing leaks that can damage your roof and interior space. Inadequate sealing materials or poor workmanship can lead to this problem, making it important to always hire experienced professionals to install skylights.

Fixing a skylight leak caused by improper installation involves assessing the current condition of the flashing and sealing materials. If the flashing is found to be poorly installed, it may need to be removed and replaced with new, correctly applied flashing that ensures a proper seal. In some cases, the entire skylight may need to be repositioned to ensure that it is installed correctly, preventing further leaks. Ensuring that the installation process is done by experts who understand the importance of accurate alignment and secure flashing will significantly reduce the likelihood of future leaks.

Weather and Natural Wear and Tear

Another common cause of skylight leaks is the impact of weather and natural wear and tear over time. Skylights are exposed to the elements constantly, making them vulnerable to deterioration due to weather conditions like rain, snow, wind, and extreme temperature changes. Over time, the materials surrounding the skylight, such as the sealant and flashing, can become worn out or damaged. This can create small gaps or cracks that allow water to seep in, especially during heavy rainstorms or snowmelt.

Fixing skylight leaks due to weather and wear requires a thorough inspection of the skylight and its surrounding materials. If the sealant has become cracked or brittle, it may need to be replaced with a fresh application to restore the waterproof barrier. Similarly, any damaged or corroded flashing should be replaced to ensure that water is effectively directed away from the skylight. Regular maintenance and inspections of the skylight can help catch these issues early, preventing major leaks and damage down the line.

Faulty or Deteriorated Skylight Seals

The seals around a skylight play a vital role in preventing leaks, but over time, these seals can deteriorate due to exposure to the sun’s ultraviolet rays, temperature fluctuations, and general aging. When the seal around the skylight fails, water can easily find its way into your home. This is particularly common in older skylights where the rubber or silicone seals have begun to crack or break down, allowing moisture to penetrate the structure.

Fixing skylight leaks caused by deteriorated seals typically involves removing the old, damaged seals and applying new, high-quality sealing materials. It’s important to use a sealant that is specifically designed for use around skylights and is capable of withstanding extreme weather conditions. This will help to ensure that the seal lasts longer and provides adequate protection against leaks. Regularly checking the condition of the seals and replacing them when necessary can help to prevent leaks before they start.

Condensation Build-Up and Poor Ventilation

Skylight leaks may sometimes appear to be caused by water from the outside, but condensation build-up inside the home can also be a culprit. Poor ventilation in a room with a skylight can lead to excessive moisture build-up, particularly in bathrooms, kitchens, or other areas with high humidity levels. When warm, moist air rises and meets the cooler surface of the skylight, it can cause condensation to form. Over time, this moisture can accumulate and cause damage to the skylight seals and surrounding materials, leading to leaks.

To fix skylight leaks related to condensation, improving ventilation in the room is key. Installing exhaust fans, dehumidifiers, or ensuring proper airflow can help reduce the amount of moisture in the air, preventing condensation from building up around the skylight. Additionally, insulating the skylight or using double-pane glass can help regulate the temperature difference between the indoor air and the skylight surface, further reducing the likelihood of condensation and leaks.

Roof Damage Leading to Skylight Leaks

In some cases, the problem causing the skylight to leak may not be with the skylight itself but with the surrounding roof. Damaged or missing shingles, cracked roof tiles, or poor roof drainage can all contribute to skylight leaks. When water is not properly directed away from the skylight or if there is significant roof damage, it can pool around the skylight and seep through weak points in the structure. Roof damage near the skylight can also compromise the integrity of the skylight flashing, making it more susceptible to leaks.

Fixing roof-related skylight leaks involves addressing the underlying roof issues. This may require repairing or replacing damaged shingles, improving roof drainage, or fixing any cracks or gaps in the roof’s structure. Once the roof is in good condition, the skylight flashing can be inspected and repaired if necessary to ensure that it is adequately sealing the area and preventing water from entering. Keeping the roof well-maintained is essential for preventing leaks around skylights and prolonging the life of both the roof and the skylight.

Incorrect Skylight Placement on the Roof

Another factor that can lead to skylight leaks is the incorrect placement of the skylight on the roof. Skylights should be positioned in a way that allows water to flow naturally away from them, rather than pooling around the edges. If a skylight is installed on a flat or low-pitched roof without proper drainage, it becomes much more susceptible to leaks, as water can easily collect around it and seep into the home.

Fixing skylight leaks caused by improper placement may require adjustments to the roof itself. In some cases, additional drainage solutions, such as installing gutters or water diverters, can help redirect water away from the skylight. In more severe cases, the skylight may need to be repositioned to a more suitable location on the roof, where water can flow away from it more easily. Consulting with a roofing professional to assess the placement of the skylight and determine the best course of action is crucial in these situations.

Cracked or Broken Skylight Glass

Cracks or damage to the skylight glass itself can also lead to leaks. While skylight glass is designed to be durable and withstand various weather conditions, it can still become damaged due to heavy impacts, falling debris, or prolonged exposure to harsh weather. Even a small crack in the glass can allow water to enter the home, especially during heavy rains or storms. Over time, these cracks can expand, leading to more significant leaks and damage.

Fixing skylight leaks due to cracked or broken glass typically involves replacing the damaged glass pane. Depending on the extent of the damage, this may involve replacing just the glass or the entire skylight unit. It’s important to use high-quality, durable glass that is designed for skylights to ensure long-lasting protection against the elements. Regular inspections of the skylight can help identify cracks or damage early, allowing for timely repairs before leaks become a major issue.

Call to Action

If you are experiencing skylight leaks or suspect that your skylight may be at risk, it’s important to address the issue as soon as possible to prevent further damage. At Golden Hands Skylight, we specialize in diagnosing and fixing skylight leaks to help protect your home from water damage. Whether your skylight needs new flashing, resealing, or glass replacement, our team of professionals is here to provide expert solutions. Don’t wait until the damage gets worse – contact Golden Hands Skylight today for a consultation.

Phone: (631) 855-2006
Email: Info@GoldenHandsNY.com