It straddles that area where you had that open spot in your sheathing, so the air escapes up into here, and then it filters out through these cores here. This is called a snow block, so this keeps snow from coming up and coming into your attic area. So the air escapes down through here and then exits like this. This ridge vent is able to exhaust 20 square inches of air for every foot of ridge vent. So once this is screwed into place, then our tile will go right onto the top of this, like so. It fits perfectly. Headlok fasteners and we put that right through the core vent into a 2x4 that weve attached below. Then we just continue that process all the way across the top of the roof. Now, clay tiles are appropriate for any climate, but there is one safeguard up here in the snow belt thats recommended, and that is a snow guard. Now, what this does is, it holds the snow on the roof as things start to thaw and its especially useful over gutters, walkways, and doorsteps. Theyre typically inst