Some of these products include fitting a few wind driven roof vents (often called whirlybirds). These products can extract up to 90 cubic yards of air per hour. Another option is to fit one or two ...

Seldom do most of us give much thought to the air flow in our attic. Ventilation is vital for roofing systems on homes with unheated attic spaces. Roof vents are the key to proper venting.