. This roof has the proper ventilation. It's impossible for you to determine the ventilation of this roof from this small video segment. Kirkey Roofing installs an open valley, we do not recommend a closed valley system. A few roofing companies in our area do install ridge caps in the valleys, which can be a problem. If you need information on tile roof installation for Florida, please contact the FRSA and request a copy of the Tile Roof Installation Manual.