A skylight is defined by a vault being formed between your roof and  the existing ceiling of a room .

If you have a single story extension with a pitched  roof you can transform  it with a cascade of light .This will transform the room into a bright and healthy  living environment ,fitting electric opening windows can transform a kitchen  or a bathroom .

Below are pictures of a vaults being formed and windows fitted in various bathrooms and kitchens .

Velux vault  in a small bathroom brings the outside in adding a feeling of a spacious area .