Installing rafter vents between the rafters along the soffit on the.
Installing air baffles in attic.
Staple each side to the roof deck spaced about every 4 inches.
Step 2 in the bay.
Even with a 3 12 2 4 truss you are looking at a minimum r15 at the farthest edge.
You will need a baffle for each space between the rafters.
As listed in the definition above the baffle is meant to regulate the flow of air.
The outside edge of the baffle should be parallel to the exterior wall sheathing.
You ll need to crawl to the end of the eave and staple the baffle against the roof deck.
Without this air movement any moisture that gets into the attic area becomes stagnant and causes mold and mildew to develop.
By installing the baffles properly you can increase the r value all the way out to the exterior sheathing.