Improper Ridge Vent Openings

Improper Ridge Vent Openings

The roof decking is not cut away enough on each side of the ridge for adequate attic ventilation flow thru the ridge vent (the exhaust vent). Each side of roof sheathing (decking), 7/16" OSB Tech Shield in this case should be cut back 3/4" - 1" away from ridge.
Ridge Vent
San Antonio area New Home Move In Inspection is shown-  Same home in both pictures. The Ridge vent installed as seen in lower photo doesn't make any difference if roof decking is not properly cut back at ridge area as seen in upper photo.
Attic Ventilation

Photos by JWK Inspections        Image by CertainTeed

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