This skylight was letting too much air leak into this customer's home! As you can see in the first picture the fiberglass insulation is all dirty and hanging off of the vertical framing. All that stands between the inside of the house and the attic is that thin piece of sheet rock, which is not stopping the movement of air at all. To solve this issue, Dr. Energy Saver used spray foam to cover the entire skylight. Because it is an expanding foam that stops the movement of air, spraying it around the entire skylight completely seals it from the attic!