Typically building codes include minimum attic space ventilation requirements as well as the roofing industry weighing in on practical guidelines.
Venting steep attic.
Code requirements the international building code 2012.
It really is a design choice.
However since the 2009 edition of the irc attics can be designed to be either vented or unvented.
Intake vents located at the lowest part of the roof under the eaves allow cool.
Ventilating attic spaces is often viewed as a technical requirement for steep slope roof assemblies as well as a building code requirement.
So the decision to vent an attic space is not dictated by building code.
Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.
Typically building codes include minimum requirements applicable to attic ventilation.
Proper attic ventilation can be an impor tant performance consideration when design ing and installing steep slope roof systems.
Our ul certified aura vents pop vents round back vents and keepa vents are tested to withstand wind pressure speeds up to 200 mph.
The roofing industry also has practical guide lines for attic ventilation.
Additionally attic ventilation is a key ingredient in the defense against ice dams in snow and ice climates.