These guys were absolutely top notch. The completed a professional (and quite impressive) installation of foil radiant barrier in my attic. And my attic was a mess! I'm an IT guy, so there are wires EVERYWHERE, and a few places, like behind the AC/heat exchanger, are extremely difficult to get to. But man, these guys showed up on time and just powered through the install. They also installed vents on the outside of the house, and used these cool channels to make sure that air gets directed into the space between the foil barrier and the roof (instead of getting covered with insulation, which is what most insulation / radiant barrier companies do).