Use glass glue first. If you want to make it strong and durable, it is better to punch holes. The clothesline is heavy, and any glue is useless. It needs to be fixed on the ceiling. However, the top cover of the clothes rack covers the top seat and is an ornament, so it is not stressed. However, if you use glue, it won't stick. It is best to screw it on the top seat with plastic or metal screws.