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Proper Air Barriers for Home Insulation

Hi! My name is Joshua Lindsey with CFM Science Building Solutions. On behalf of Expert Village, we are doing a frame walk and insulation inspection on this home. The first thing we are going to look at is the overall alignment throughout the house. What we are looking at is the overall alignment as we are looking at that the insulation is going to have air barriers on all sides. Let me explain that to you. Right here we've got an air barrier on this side, an air barrier on the right and left, we've got the top plate, the bottom plate. That is four of our air barriers. This is going to number five and when we put the drywall out here on the outside, that is going to be number six. We want six air barriers on everything if we can get it. Obviously, there are some places that we can't get six air barriers. This is one area that is going to be a problem. Right up here we have the sides and we are going to have the bottom air barrier against the insulation. We don't have the top air barrier so we are actually going to have one, two, three and four with the drywall. We are going to only have four air barriers. This is a real problem. At this point, air can flow right through the insulation and the insulation becomes nothing more than a filter filtering the air right into the house. So if you look with an infrared camera, up at this corner once it is drywalled, you are going to see a huge hot spot right there with the infrared camera. It is going to show this big old red spot in the middle of the summer because of the fact that the air is just flowing right through your insulation. Huge problem right there.

Proper Air Barriers for Home Insulation video by Expert Village.com

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