I am a homeowner and recently had a roof replacement. A new GAF Snow Country Advanced ridge vent was installed incorrectly and the roofing company agreed to completely redo the vent. A new ridge vent was put in but now has about a 3/4 inch gap between the two ridge vent pieces.
I went to a store to look at a sample vent and into the attic to look at the vent from below and from what I can see the pieces were placed overlap to overlap. The vents have one end that has a small overlap and then the other end has a small indentation as an underlap so that the pieces fit together as you connect them along the ridge. I’m concerned about either water instrusion through the gap or mice getting in. The roofing company is saying the the gap is fine and won’t be a problem. Is there a reason why the ridge vent would be installed this way? Will it cause issues? I just want to know if I need to address this again with the roofing company.
I can’t get a clear picture of my roof because of how high up it is but the attached with same product shows what the gap looks like from the outside.