On the day of the installation, the workers first ensured that all our floors were protected from dirty feet and dirt as well as installing barriers to protect stairway corners and overhangs were not marked by the equipment they planned to use. They then removed all the old batt insulation from the attic along with sundry other detrius they discovered underneath it, all left by the home's previous owners. After constructing the walkway and the box, they then began to pump in the Atticat insulation via a long length of tubing connected to a machine that sat on our porch. One employee fed the bales of insulation in at one end which somehow turned into expanded foam at the other, filling our attic space with what now looks a huge pink fluffy cloud. Worktime was roughly 5 hours and all of Apollo's employees were personable, helpful and respectful of our home. It's too early to see what savings we might make as a result of this installation, but I suspect the difference will be palpable during both the upcoming summer and the following winter, especially as we have gone from weedy 6" batt insulation to over 20" of blown-in material.