we use a special formula spray foam from lapolla that they created for us called houze foam. guys manufacture their insulation basically? doug kramer: we do. we are one of the largest manufacturers of spray foam for construction in north america. the houze product specifically is the highest cutting-edge technology available today. this is a great visual demonstration. it is hot air blowing in this lower cavity, and you can see where the spray foam is stopping the airflow from coming through. where with these products, you can see the difference of the allowance of air penetration. these gauges are measuring the temperatures inside of the boxes. not only does the spray foam eliminate the air infiltration, it also reduces the temperature by 30 to 40 degrees. matt: do you think i can get a chance at shooting the gun? >> we can make that happen. matt: let's do it. ♪ matt: that was a blast. literally. one of the first things i thought about when i was reading about these homes was i want one. you are not going to get any electric bills, you have designed them to have an ample amou