and a roof vent. Roof vents can be dome-shaped, square (like the one shown here.), rectangular or chimney-shaped. They all ...

and nesting birds and squirrels often find roof vent caps irresistible. Once you've decided on a vent location and planned ...

Some have electric vent fans, and one house has a fan ... To exhaust it, there can be ridge vents, tucked under the cap at the top of the roof, or sometimes horizontal vents installed a few ...