Which is better, a ridge vent or roof vents?
Short answer. On most roofs with a reasonable length of ridge, a continuous ridge vent is better than individual box vents because it exhausts evenly along the whole peak, sits at the highest point, and is nearly invisible. Box vents, also called static vents or roof louvers, still make sense on hip roofs with short ridges and on complex roofs, and either type needs matching soffit intake.
Why ridge vents usually win
- Highest point: hot air rises to the peak, and the ridge vent sits there along its full length.
- Even airflow: it draws from every rafter bay, while box vents pull hardest from the bays nearest each vent.
- Wind help: a baffled ridge vent uses wind from either side to create suction.
- Fewer holes: one slot under the cap instead of several cut-outs in the field of the roof, each with flashing that can fail.
- Looks: capped with shingles, it blends in.
Where box vents make sense
- Hip roofs with ridges too short to supply the needed exhaust area.
- Separate attic pockets on complex roofs that have no ridge of their own.
- Roofs where the framing at the peak does not allow a proper slot.
Box vents work fine when there are enough of them, placed close to the ridge and paired with intake. A typical box vent is rated around 50 square inches of net free area, so a large attic may need quite a few.
Do not mix them
A ridge vent plus box vents on the same attic is the most common mistake. The ridge vent pulls air in through the nearby box vents instead of from the soffits, leaving the lower roof deck without airflow. When a ridge vent goes in, the old box vents should be removed and the holes decked and shingled over. For a deeper comparison see ridge vent vs box vents, and for the intake side, roof ventilation basics.