Leaky skylight? Don’t panic, you can often fix it yourself with a few simple steps. Most skylight leaks come from three common causes: condensation, a worn or damaged gasket, or faulty roof flashing. The first step is to identify the source of the water. If it’s a seal or flashing issue, you can usually stop the leak by cleaning the area, resealing with the right roof flashing sealant, or replacing a damaged gasket. If condensation is the culprit, improve airflow, clear weep holes, and reduce indoor humidity. For major leaks, structural damage, or steep roofs, call a professional like Shumaker Roofing in Frederick, MD, to avoid costly water damage.
In most cases, you can fix a leaky skylight on your own. Finding the source of the water is the first step.
A skylight brightens your home with natural light, but a leak can quickly turn it into a costly problem. If your skylight is dripping, don’t ignore it, water damage can spread fast! This guide will show you how to quickly find the leak and fix it, whether it’s from condensation, faulty sealing, or flashing issues.
Don’t put off fixing a leaky skylight if you have one. A tiny leak could be a sign that water is accumulating around the skylight, which could cause the roof decking to decay.
Shumaker Roofing, a roofing contractor in Maryland, cautions against attempting large-scale skylight repairs on your own. However, with the correct tools, most leaks can be located and sealed by homeowners.
“Condensation could be the cause of the issue instead of a leak.” If a leak is present, it can originate from a different area of the roof rather than the skylight itself. That’s why roof leaks are often subtle.
Note: Since working on roofs can be hazardous, make sure you put up and use your ladder in accordance with safety regulations. Use the appropriate safety gear at all times, such as a roof safety harness and non-slip shoes. Hire an expert if the roof is too steep for you to walk on comfortably or if you have any other worries.
Identify the Leak’s Source
Step 1: Stop Water Damage Immediately
Place a bucket or towel under the leak to prevent further damage.
If the leak happens during heavy rain, check if the water stops after the rain ends. If it does, your issue is likely flashing or seal failure.
If you see moisture inside even when it’s dry outside, condensation is likely the cause.
This usually requires a stepladder to closely inspect the area around the skylight from the inside. Identifying the exact point of the leak is crucial for addressing the issue effectively and preventing further damage to your home. Take action swiftly to minimize the impact and consider consulting a professional if the problem persists or the leak’s origin is not readily apparent.
Condensation
Keep an eye out for any indications of moisture on the glass while you inspect the skylight. If you locate any, you’ll probably notice that it gathers and drips at specific locations.
How to Fix Skylight Condensation
Improve airflow: Open the skylight if possible or use a ceiling fan.
Clear weep holes: Use a thin wire or compressed air to unclog drainage holes in the frame.
Reduce humidity: Use a dehumidifier, especially in bathrooms or kitchens.
In addition, climbing up onto the roof and cleaning debris out of the weep holes—tiny openings on the bottom of the skylight frame that let condensation escape. By doing this, the glass in the skylight will stay clear.
Faulty Skylight
In the event that the skylight opens, look for mildew or signs of deterioration in the rubber gasket surrounding the frame. That would suggest that moisture is seeping between the window casing and the frame and that the skylight isn’t sealing all the way.
Step-by-Step Fix for a Faulty Skylight Seal
Inspect the gasket: Look for cracks, mold, or gaps in the rubber seal.
Clean the area: Use a damp cloth to remove dirt and debris.
Replace the gasket: If damaged, purchase a replacement from your skylight brand.
Seal with weatherproof silicone: Apply a thin layer around the frame for extra protection.
Additionally, there can be dirt fragments keeping the skylight from shutting completely. Eliminating these might halt the leak.
Moisture may be present around a skylight crack that you find during your inspection. Most of the time, you’ll need to replace the complete skylight, even though it could be able to remove and repair the damaged section.
Faulty Roof Flashing
After removing skylight flaws and condensation, any water you observe has to be entering through the roof. Either it’s getting past the seal between the flashing and the skylight, or it’s leaking under the flashing.
It is simpler to diagnose and fix if the problem originates from the frame on the higher portion of the roof slope rather than the lower portion. Since water usually follows the roof decking, the source of a leak from the bottom section. Almost always, the flashing skylight is the one from the upper section.
Reseal the Flashing
The next step is to use a caulk gun and the proper sealant on the roof if it is determined that the water is truly coming from the flashing. We suggest sealants like Loctite Roof & Flashing Sealant, which are made especially for roof flashing. For this project, silicone sealants and butyl sealants are not advised.
Fixing a Leaky Skylight Flashing – DIY Guide
Check for damage: Look for cracked sealant, rusted flashing, or missing nails.
Remove old sealant: Scrape off dried-out or loose caulk with a putty knife.
Apply new sealant: Use Loctite Roof & Flashing Sealant to create a waterproof barrier.
Inspect surrounding shingles: Lift shingles carefully to check for hidden leaks.
If so, use a putty knife to scrape out all the loose material, then dab the exposed area with fresh sealant.
You’ll need to pull back the shingles in order to inspect the flashing sections that are flush with the roof. On the flashing’s margins, especially near the skylight’s head on the upper section of the roof, liberally apply sealant. Keep in mind that any water leaking from a lower area of the skylight may trickle down and spill beneath the flashing at the top.
You May Need to Reinstall the Flashing
High-quality skylights have flashing is leakproof when done properly. Unknowingly, though, a novice professional installer or a do-it-yourselfer could harm the flashing by nailing it to the roof. It’s usually better to tear off the shingles and reinstall the flashing if you detect nails, rusted or deteriorating flashing, or holes in the step flashing around the sides of the skylight frame where shingles and flashing are piled.
In this case, We suggest employing a pre-screened contractor. In this manner, you can guarantee that the right flashing is applied and fitted. Even if it costs more, it’s preferable to complete the work yourself and find out the skylight is still leaking.
When to Call a Pro in Frederick, MD
If your skylight leak persists after DIY fixes, or if the roof slope is steep or flashing is damaged, it’s time to call a professional. Shumaker Roofing serves Frederick and surrounding areas with expert skylight repair and replacement. We’ll inspect the leak, assess the damage, and recommend the most cost-effective solution. Don’t wait until water damage spreads, schedule your inspection today.
Don’t Let a Small Leak Become a Big Problem
Skylight leaks may start small, but they rarely stay that way. Whether it’s condensation, a worn gasket, or compromised flashing, early action is key to protecting your home and avoiding costly repairs.
You’ve now got the tools to inspect and address minor issues—but if the leak persists or you’re unsure about climbing the roof, don’t wait. Shumaker Roofing is here to help homeowners in Frederick, MD with expert skylight inspections and repairs.
- Fast response
- Local expertise
- Free estimate
Secure your home and peace of mind—schedule your skylight inspection today.
Conclusion
A leaky skylight doesn’t have to turn into a major home repair if you act quickly and correctly. By identifying whether the issue is condensation, a failing gasket, or damaged flashing, many minor problems can be resolved before they cause serious water damage. Regular inspections, proper sealing, and moisture control go a long way in protecting your roof and interior. However, not every leak should be handled alone. If repairs feel unsafe or the problem keeps returning, professional help is the smartest move. Addressing skylight leaks early protects your home, your comfort, and your long-term peace of mind.
FAQs
Can I fix a skylight leak myself?
Yes, minor leaks from condensation or worn seals can be DIY’d. But for flashing issues or roof damage, it’s safer to call a pro.
What causes skylight leaks in Frederick homes?
Leaks often come from failed seals, flashing gaps, or Maryland’s seasonal weather, especially heavy rain or winter ice.
When should I call Shumaker Roofing?
If the leak persists, the roof is steep, or you see signs of mold or ceiling damage, schedule a free skylight inspection today.
