Roof vents exhaust heat and moisture leaving the attic cooler and drier.
Roof vents and animals.
If you hear animals on your roof notice animal droppings on your roof or actually see critters moving under the eaves or physically entering your home first walk around your house and check things out from ground level.
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Or replace vents around the roof area if these have been damaged.
These uninvited unwelcome visitors may announce their presence by sight sound or smell.
How do animals get in the attic.
Attic ventilation is an ibc building code requirement.
In some cases animals such as bats raccoons.