What Are Common Issues with Flashing Around Chimneys?

Leaks and Water Damage

Flashing around chimneys is a common area where water intrusion occurs due to improper sealing or installation. When solar panels are installed near chimneys, it’s essential to ensure the flashing is done correctly. A 2- to 3-inch gap between the chimney and the solar panel mount is recommended to allow for water to run off. Use a 2-inch x 2-inch x 10-foot long galvanized or aluminum flashing piece, cut to size, to cover the gap. Secure it with 1-1/2 inch galvanized lag screws and seal the edges with silicon sealant.

Chimney and Solar Panel Compatibility

Chimney height and solar panel placement must be carefully coordinated to avoid damage to the panels from ash and debris accumulation. Typically, chimneys should be at least 3 feet away from the center of the solar panel to ensure proper clearance. Use a 1-foot long piece of 1-inch x 1-inch x 1/16-inch thick aluminum flashing to create a drip edge, directing debris away from the panels. Ensure the solar panel mount is designed to withstand wind loads and chimney vibrations.

Maintenance Considerations

Regular inspections and maintenance are crucial to prevent chimney-related issues from affecting solar panel performance. Clean the chimney and solar panel area annually to prevent debris accumulation. Check the flashing for signs of damage, rust, or corrosion, and replace it as needed. Also, verify the solar panel’s tilt and orientation to ensure optimal energy production.