By installing the baffles properly you can increase the r value all the way out to the exterior sheathing.
Installing air baffles in attic.
You will need a baffle for each space between the rafters.
If your roof rafters have been covered over with drywall or plywood you will have to remove it in order to install the baffles.
Without this air movement any moisture that gets into the attic area becomes stagnant and causes mold and mildew to develop.
Installing rafter vents between the rafters along the soffit on the.
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.
As listed in the definition above the baffle is meant to regulate the flow of air.
Pull any existing insulation away from the edges of the attic where you will be putting up the baffles.
Step 2 in the bay.