The answer to 'how to maintain skylight' is to regularly inspect, clean, and repair your skylight to ensure it continues to function properly and prevent any leaks or damage. This includes checking for cracks, broken seals, or any other signs of wear and tear, and addressing any issues promptly.
You should clean the skylight's exterior and interior surfaces at least once a year, using a mild soap and water solution. Avoid using harsh chemicals or abrasives, as they can damage the skylight's materials. If you notice any condensation buildup or fogging, this may indicate a problem with the skylight's seals or insulation, and you should have a professional inspect it.