What to Do When Water Drips from Light Fixtures

 
Roof Leaks and Water Intrusion
 

• Water can seep through damaged or missing roof shingles, cracks in flashing, or improperly sealed penetrations. This water runs down and may collect in or around light fixtures, causing a drip.
• Moisture from a leaking roof can travel along beams, eventually finding its way into areas where fixtures are mounted.

 
Plumbing Leaks Above Ceilings
 

• Pipes that run above ceilings can develop leaks due to corrosion or loose connections. As water drips along these pipes, it can pool on light fixtures located below.
• Water from plumbing leaks often follows the path of least resistance, finding its way to fixtures where joints or cuts in the insulation allow water to seep down.

 
Condensation Issues in Temperature Extremes
 

• When warm, moist air meets colder surfaces inside the fixture, condensation can form. Over time, these droplets accumulate and cause a noticeable drip.
• This is common in rooms that are not well insulated or where fixtures are installed near exterior walls.

 
Environmental Humidity and High Moisture Levels
 

• Areas with high ambient humidity or rooms where moisture is regularly produced—such as bathrooms or kitchens—can cause light fixtures to collect condensation.
• Humidity can increase the amount of water in the air, making conditions perfect for droplets to form on cold surfaces, including the metal parts of a fixture.

 
Faulty Sealing and Poor Installation
 

• Improper sealing around the fixture can allow water from roof leaks or external sources to enter, resulting in water dripping from the light.
• Installation errors, such as using the wrong type or size of fixture for a damp location, can make it easier for moisture to build up and drip.

 
Exterior Water Seepage and Structural Issues
 

• Structural issues such as cracks in the building’s exterior walls or gaps around windows and doors can let in water. This water might travel along the structure until it reaches a light fixture.
• In older buildings, degradation of building materials over time can create hidden pathways for water to enter and eventually drip from fixtures.

 
Localized Issues in Utility Spaces
 

• Utility spaces where light fixtures share ceilings with HVAC systems or other machinery may have additional moisture. This is often due to condensation on cold surfaces of pipes and ducts, which then drains onto nearby fixtures.
• Similar localized issues can appear near water features such as indoor fountains, which increase airborne moisture inside a room.

 
Geographical Influences and Regional Weather
 

• Cities like St. Louis may experience heavy rain and rapidly changing weather conditions, which can increase the risk of water intrusion through roof or wall leaks.
• In areas such as Nashville, humid summer weather and frequent storms can contribute to additional moisture around and inside light fixtures.