A couple of years ago, I added a skylight
while remodeling a bathroom.
The major reason for the skylight was
to keep the room daylit, since I was
removing the only window in the
room. (The window was in the tiled
tub enclosure—you know, the type of
window that grows slime mold but
makes the tub a bright place to take a
shower.)
Since skylights have a bad reputation
as energy losers, I figured the best
I could do energywise was damage
control, even though the unit faced
south at about a 30-degree slope. I
purchased a 4x4-foot Velux doubleglazed
unit with low-e glass and a 1/2-
inch air gap. At that time, this was
about the highest