We installed a Solatube in our upstairs kids bathroom about 15 years ago. Love, love love that thing. I can't tell you how many guests have asked us how to "turn off that light" It brightens up that bath wonderfully and does not heat up the room. It has never leaked water either. I would highly recommend one if you need some light and do not have another floor above it.
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My newest Grandson, Caleb Austin, was born May 29th. I am now Grandma to 4 precious babies. I am so blessed!!!!