and on that, you'll see blackwood to the ridges.ew peel and stick tags where you pull the back off like a band-aid. you put a little glue still on the metal seam roof. don't have to screw anything in. it sticks to it. it is much easier. it looks a lot better. so, for the commercial businesses i work with, i really recommend that. and then for this home to really make sure i reduce my energy loads, way down, it is obviously one of the biggest loads is heating and cooling. so, we drilled four 100 foot holes filled with copper pipe with greenhouse gas friendly refrigerants into a gee joe thermal heat pump. that has reduced my heating load by 30% and it about a four year payback. cost-effective. in 900,000 buildings across the united states, mostly schools. but not use so much in residential and needs to be promoted. >> we've got a minute. i want to make sure we get to the backyard. to your other building off the grid. >> absolutely. this is a small two story office building. it has solar electric roofing shingles. a solar daylight tube