The evidence was overwhelming. I saw it in Vancouver today and I’ve seen it elsewhere before. An aged skylight had a cracked frame and was failing. I’ve seen it before and now here is photographic proof. This is why I only install Velux skylights. They have eliminated this design failure in their new models. Velux now manufactures a single piece skylight. This old skylight was 15 years old but that’s not old enough to have this sort of failure in my opinion.