 So be aware of the sounds and the sights and the smells of natural gas and propane, for that matter. But before you put a shovel, a spade, or any other digging implement in the ground, call 811 every time at least three business days prior to starting your outdoor project, and all those utilities will flock to your house and mark them out for you. Heading out to Wisconsin, we've got Kevin on the line who's shopping for some roofing options and has questions about insulation. What can we do for you?