When it comes to exhaust ventilation, crested vents are a great option if you want to maintain the aesthetic of your roof. If your home is only equipped with small gable vents or a fan high up in the ceiling, you may want to consider adding ceiling vents to increase airflow. These vents allow outside air to enter the attic at the lowest point of the roof, along the bottom of the eaves. They are most effective when used together with a continuous ventilation grille.
The preferred way to ventilate an attic is a crest-shaped ventilation grille in combination with ventilation grilles on the ceiling. However, depending on the construction or design of the house, an alternative ventilation combination may be more suitable. Online tools such as an attic ventilation calculator can help you understand ventilation based on the size and shape of your attic. It's also important to find a reliable roofing contractor like Roof Right Inc.
who can inspect your roof and attic and provide guidance on how best to adapt to your situation. If you have a four-pitched roof, you may need to increase your ventilation. Roof intake vents are not as safe as ceiling vents, but they are more leak-proof than leaking ventilated edges. They are an excellent solution when there are no ventilation grilles in the ceiling or if there are no overhangs in the ceiling due to the construction design of the structure. When installing soffit vents, it's important to place them on the joists as close to the ceiling as possible in order to prevent heat from getting in.
Additionally, after covering the ends of the gable with a radiant barrier to completely close off the attic, you should use the ventilation grilles of the gable for the other system. You may also want to consider swivel vents and replacing square grilles with new insure-approved roofing. Ridge vents are a great option if aesthetics are an issue because they don't spoil the look of your roof like turbine vents or other protruding vents do.