I agree, leave the paper facing alone as it is acting as a wind baffle to direct the air stream along the roof because I really doubt it is close after 10 years or so. FG, faced insulation sags to compress itself from 5-1/2" to 3" in a crawlspace, I can't see a steep roof being much different. NO NEED to tape the seams/joints as it is area weighed, not your air barrier, though the insulation may help keep the attic cooler in summer from roof solar gain. The facing is a vapor barrier (retarder) and should have gaps between pieces to allow moisture in attic center/edges to leave via the roof plane where most of your air movement is located. eg; when installing a radiant barrier, always leave a gap top/bottom for same reason. Don't tape it...
Gary
PS. even if they stapled the tabs to the rafter tops, it will stretch/sag to create a gap, at least in the center of the facing. IMO.
Gary
PS. even if they stapled the tabs to the rafter tops, it will stretch/sag to create a gap, at least in the center of the facing. IMO.
