How do you ventilate a roof in a hot, humid coastal climate?
How to ventilate pitched roof homes in hot and humid coastal climate?
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For ventilating a roof in a hot climate you should have well-ventilated soffits to remove moisture and prevent overheating. This page will help -
How to ventilate a roof properly
We recommend soffits vents as it provides a very uniform source of air as low in an attic space as it can be. Be sure inputs are not blocked with insulation. There are many designs of roof peak exhaust vents, the ones with the best repuation we have seen are Maximum roof vents as they not only allow air and moisture to escape, the design is such that the wind pulls air from the attic space.
They look like this -
Sometimes you will see vents at gable ends, this can sometimes be counterproductive, as it provides only a very localized source of fresh air, and often too high above the level of insulation. This can often leave air idle at the edges.
For additional durability and energy efficiency be sure to install an attic radiant barrier to prevent overheating.