The highest point, the peak of each gable or hip.
The highest horizontal point of each roof area is the ridge.
The apex of roof is basically the highest point of the roof where ridge cap and ridge roll of a roof is located.
To seal the ridge from weather. If a ridge vent is used it is just that, a vent for the roof.
The highest part of the roof is the ridge.
The highest point of each roof area.
peak or ridge or ridge cap
The top of the house had a ridge on it.Our house has a ridge on the top of the roof.
Ridge
For a typical gable roof you have a ridge board at the top with rafters running from the ridge to the top plates of the walls
roof, peak, ridge
The ridge.
You would not have to add a ridge board, particularly if you are planning to build the addition roof directly over the existing roof.
The roof truss of a building with a low ridge roof.