We sprayed this home using Bayer Material Science foam. The customer wanted 7" of closed cell foam in his roof and 5" of closed cell foam in the walls of his 3000 sqft home for a super energy efficient home. Although we vented the roof we still had plenty of room for the 7" of foam. After the spraying was completed and the windows and doors were sealed with low expanding foam, we conducted a blower door test too see just how tight the building was. Mark Perry from Mark Perry Inc. completed the blower door testing for us. Blower door reading at 50 pascals came in at 550 CFM. This house will not see any fuel deliveries for awhile.