They also work when ridge vents aren't possible, such as when a roof has no ridge (pyramid-shaped roofs, for example).

Inexpensive Roof Vent Could Prevent Billions Of Dollars In Wind Damage. ScienceDaily . Retrieved June 4, 2025 from www.sciencedaily.com / releases / 2008 / 04 / 080428141822.htm ...

L O N D O N, Aug. 23 -- Russian scientists are building a woodenpyramid over a volcanic vent on an island off the north coastof Japan to try to trap gases containing the rare metalrhenium, the New ...