Condensation is likely to be an issue with roof lights, whereas Solatube Daylighting Systems are designed to dissipate any condensation that may form, out on to the roof.
Light wells create a shaft of light leaving a bright square of direct light on one part of the floor, whereas the daylight from the Solatube ceiling fitting is evenly diffused throughout the room.
Light wells are a haven for cobwebs, flies and spiders and will require frequent cleaning.
Keeping roof windows clean from water staining, bird droppings, leaves and moss/algae can be difficult – both inside and out, owing to access and attendant safety issues. Solatube Daylighting Systems require no cleaning or maintenance.
When it rains, roof windows can transmit a loud drumming noise in to the room below, which a Solatube does not.
If security is a consideration, then Solatube Daylighting Systems are a far safer bet than a traditional roof window.
Installation is much simpler – you can fit a smaller Solatube Daylighting System in between the rafters and the roof timbers do not need to be designed and/or cut and trimmed as they would around the traditional roof windows.
With traditional roof windows you also need to allow for the window and flashing kit, plus both materials (plasterboard, timber etc.) and a significant amount of extra time for building, plastering and decorating the light wells. In comparison, a Solatube Daylighting System is simple, quick and easy to install, either when scheduled in with your roof build or as a retrofit.