It is essential to allow heat dissipation and water vapor to escape the roof system through proper ventilation. Therefore, air must be able to circulate freely between insulation and the nailable roof deck, from the eaves to the ridges. Most major building codes require a minimum ventilation ratio of 1 m² net ventilating area per 300 m² of attic floor space (1:300). It is always divided evenly between the eaves and the ridge.
Proper ventilation is crucial to extend the life of the shingle roof. For low slope roofs between 9,5° and 15° you can use Armourvent Multi, but use extra plastic cement and end caps!
IKO Armourvent® Sanitary is an ideal ventilation for your bathroom or kitchen.
Even when it’s raining, this ventilation removes humidity from the room. Also for low slope roofs.