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2015 Table R302.1(1) footnote b

Without the gable vent there is one less place for the fire to spread to neighboring buildings?
 
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I was taught to never put an eave vent over a window.

 
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ICE said:
I was taught to never put an eave vent over a window.
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That seems very difficult, considering the random location with windows, aligning with the regularity of vent placement.

Brent.
 
There is no set pattern required for eave vents that I am aware of. If you lose a few here and there what's the big deal? Just add a few somewhere else.
 
ICE said:
There is no set pattern required for eave vents that I am aware of. If you lose a few here and there what's the big deal? Just add a few somewhere else.
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Kinda like with your thing, no vents over windows, mine has always been 3 blocks, a vent...3 and 1. Who knows where it came from.

Brent.
 
Clarification from the 2018 IRC changes "eave" with the following:

b. The fire-resistance rating shall be permitted to be reduced to 0 hours on the underside of the rake overhang where gable vent openings are not installed.
 
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