Whole house fans powered attic fans.
Venting attic van to soffitt.
Fans and vents may be installed on the roof system that will draw the air out of the attic space and exhaust it to the exterior.
For more information on ventilation and moisture control read this article i wrote on proper attic ventilation it s my position that you should have a proper ventilation system in your attic and that you should always take the time to air seal the floor of the attic.
These vents allow outside air to enter the attic at the lowest point of the roof along the underside of the eave.
Even without soffit venting it is important to provide an air gap at the soffit level to help keep the roof deck dry.
When passive methods aren t sufficient an electric fan installed at a soffit vent draws additional outside air into the attic to augment the chimney effect.
However if your attic has blocked soffit vents and is not well sealed from the rest of the house attic fans will suck cool conditioned air up out of the house and into the.
See the benefits of attic ventilation a new roof is more than just shingles.
One static vent style is the turbine vent which uses wind to power its enclosed fan all it takes is a light breeze to rotate the blades and suck heat out of the attic view example on the home.
These fans may be controlled by a switch or a thermostat which detects heat build up in the attic space and automatically exhausts the attic space.
They re most effective when used in conjunction with a continuous.
Attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents soffit and gable and pushing hot air to the outside.
If your home is fitted solely with small gable end vents or a ventilator high in the roof you might want to consider adding soffit vents to increase airflow.