The answer to 'how to clean skylight' is to clean the skylight regularly, at least once a year, to maintain its transparency and prevent buildup of dirt, debris, and streaks. Start by removing any loose debris with a soft-bristle brush or microfiber cloth. Then use a mild soap and water solution or a specialized skylight cleaning solution to gently wipe down the interior and exterior surfaces. Avoid using harsh chemicals or abrasive cleaners, which can damage the skylight's surface. Dry the skylight thoroughly with a clean, lint-free cloth to prevent water spots.
If the skylight is difficult to reach or the glass is heavily soiled, it's best to call a professional skylight cleaning service. They have the proper equipment and expertise to safely and effectively clean your skylight without causing any damage.