Even small gaps or imperfections can allow moisture to penetrate, potentially causing significant damage over time. Always use appropriate materials and methods to create a reliable barrier against water intrusion, safeguarding your solar panel connections for years to come. . Hi, I have 12kW of ground mounted solar panels, two rows of ten Canadian Solar 595W. I store bags of sand and cement under them, under a tarpaulin, and crates of assorted household 'junk'. When I mounted the panels, I left a 1-2cm gap between them, because I thought it would allow some of the wind. . Sealing the gaps between solar panels is essential for a variety of reasons, including water resistance, anti-debris, improved wind resistance, and aesthetics. Weatherproof junction boxes with high IP. . Let's face it - when installing solar panels, most people worry about sunlight exposure or energy output, not rainwater sneaking through those tiny gaps between modules.
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