There isn’t much to maintain skylights, for the most part. The exterior frame is usually aluminum and will last for years without ever needing any maintenance or upkeep. But the area where the light comes in is usually acrylic, glass, or polycarbonate. These are durable surfaces that last for years and years, but they do need cleaning occasionally.
Do Skylights Need Cleaning?
Skylights on residential structures are either laminated or tempered glass panels which can be cleaned using a mild soap and water. You should never clean them with anything that is abrasive or use a razor blade, which could scratch the glass and/or coating.
Acrylic Skylight
Acrylic or plastic skylights need more specific care when cleaning them. Use only mild detergent and water. Never use any window cleaner or anything that has an alcohol or petroleum base in the product.
Maintaining Your Skylight
Residential skylights are almost maintenance-free. If you have an older skylight, it may have a clear paraffin-based sealer that wasn’t painted. You may choose to have yours painted, and it is recommended that you have a professional do this for you. A professional will know what to look for in the way of damage or rot.
If you have vented skylights with hinges and a support mechanism, never let anything obstruct them from opening and closing.