It is important that your attic have good air circulation, and altho most people think is as easy as hopping on up to the roof and sticking in an extra vent, it's actually just a little bit more complicated. your attic needs to have ventilation on top in the form of Max Air vents (Recommended), Soffit vents, and baffles inside the attic. In order for us to determine the best options and additions for you to prevent hold, ice build up on your roof or in your attic and huge icicles bringing your mood down and making it feel like you live in the north pole, contact us and one of our certified technicians can cater to your exact needs.