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Skylight leak repair
Skylight Leak Repair in Baton Rouge, LA
Skylights are a common leak point because they cut a large opening in the roof. Before replacing anything, it is worth finding out whether the leak is the flashing, the skylight itself or simply condensation.
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Skylight Leak Repair
Why skylights leak
A skylight is a window set into the roof, surrounded by flashing that has to carry water around it from every direction. Water that gets past that flashing runs into the light shaft and shows up as stains or drips around the skylight.
Common causes include worn or incorrectly installed flashing, failed sealant, a cracked or damaged frame, and in older units, seal failure in the glass. Leaves and debris can also dam water above the skylight, pushing it under the flashing.
Many skylight problems are not leaks at all. Moisture on the inside of the glass can be condensation from humid indoor air. A foggy or hazy look between the glass layers means the glazing seal has failed, which is a skylight issue but not a roof leak.
What to look for
Signs of a skylight leak
Stains or drips around the skylight shaft
Water entering at the flashing runs down the shaft walls and onto the ceiling.
Peeling paint around the skylight
Moisture over time lifts paint and can lead to mold.
Water only during heavy or wind-driven rain
Small flashing gaps often leak only when water is pushed sideways.
Cracked or damaged frame or glazing
Impact or age can crack the frame or glass.
Fog or haze between glass layers
This points to glazing seal failure, which is not a roof leak but may mean replacement.
Condensation on the inside of the glass
Often due to indoor humidity and cold surfaces, not a leak.
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Typical causes of skylight leaks
Flashing failure
Flashing around the skylight corrodes, loosens or was not installed to suit the skylight model.
Failed sealant
Sealant at the frame and flashing dries and cracks.
Debris and water damming
Leaves and debris above the skylight hold water against the flashing.
Aged or damaged skylight
Frames and seals wear out over time, and impact can damage them.
How the work goes
How we handle skylight leak repair
Confirm leak versus condensation
Check whether the moisture is from the roof or from indoor humidity.
Inspect the skylight and flashing
Check the frame, glazing, flashing, sealant and surrounding shingles.
Check the light shaft
Look for stains and moisture to help trace where water enters.
Reflash, reseal or replace
Install proper flashing or a flashing kit, reseal or replace the skylight if it is damaged or failing.
Test and clean up
Confirm the area is watertight and leave the work area clean.
Repair or something bigger?
Repair, replace or wait: how to decide
The right answer depends on the cause, the roof’s age and condition. Here is how to think about it.
Reflashing or resealing is usually enough when
The skylight itself is sound and the leak is at the flashing or sealant.
Replace the skylight when
The frame is cracked, glazing is failing or the unit is old enough that repair is not worthwhile.
Ask about model-specific flashing
Skylight makers supply flashing kits designed for their units. Ask whether one is being used.
Looking after a skylight
- Clear debris above the skylight Leaves and needles uphill of the skylight dam water.
- Check the flashing after storms Look for loose or displaced flashing.
- Watch interior humidity High indoor humidity causes condensation that is easy to mistake for a leak.
- Inspect sealant occasionally Cracked sealant should be addressed.
- Plan skylight work with roof work If the roof is being replaced, consider reflashing or replacing the skylight at the same time.
Related leak repair services
Explore more roof leak repair services
Leaks rarely have a single cause. These related services cover the other places water commonly gets in.
Flashing & Chimney Leak Repair
Leaks around chimneys, walls and valleys usually trace back to flashing.
Explore this service
Roof Leak Detection
Trace the stain back to the real entry point before anything gets repaired.
Explore this service
Vent Boot & Roof Vent Leak Repair
Cracked pipe boots and leaking roof vents, a very common and fixable leak.
Explore this serviceEmergency Leak Repair & TarpingStorm Damage Leak RepairRoof Leak DetectionShingle Roof Leak RepairFlashing & Chimney Leak RepairFlat & Low-Slope Roof Leak RepairVent Boot & Roof Vent Leak Repair
Want to know what repairs involve before you call? Read our guides to roof leak repair costs in Baton Rouge, common roof repair price factors and what to do when your roof leaks in heavy rain. Back to the main roof leak repair page.
Is my skylight leaking or is it condensation?
Condensation forms on the inside of the glass in humid conditions and does not usually leave stains on the shaft. Leaks show as stains, drips or wet material around the skylight, especially after rain.
Can a skylight leak be fixed without replacing it?
Often yes, if the unit is sound and the problem is flashing or sealant.
Why is there fog between the glass layers?
That is a failed glazing seal. It is not a roof leak, but the unit may need replacement.
Why does my skylight leak only in big storms?
Heavy, wind-driven rain pushes water under flashing that handles normal rain. That points to flashing details.
Should the skylight be replaced when the roof is?
It is often sensible to reflash or replace it at the same time, because doing so later means disturbing a new roof.
Do all skylights need a flashing kit?
Many manufacturers specify one for their unit. Ask what flashing method is planned.
Frequently asked questions
Skylight Leak Repair questions
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Contact Red Stick Roof Repair
Send a message through the form and tell us what you are seeing. Include the location of the stain or drip and when it appears so the team can understand what help you need.