Syracuse Roofing: Article About Advantages and Disadvantages Of Mechanical Ventilation
When it comes to ventilation systems, there are two types: mechanical ventilation systems and passive ventilation systems. Passive ventilation systems are the most common, as they work without any electricity. However, if the roof has a unique design and passive vents are not working to keep the roof cool and free from moisture, mechanical vents may work to bring in fresh air. If the current ventilation system is not adequate, a Syracuse roofing contractor can determine if mechanical vents can help.
Mechanical ventilation systems use fans or other devices to push air throughout the attic. These fans or other devices use energy to power the moving parts. Like passive ventilation systems, the fans also work to exchange hot attic air with cooler outside air. This removes moisture from the attic and helps prevent mold from forming in the insulation and structural components.
There are several types of mechanical vents that can be installed. Gable mounted ventilators are mounted in existing passive gable vents or through the gable wall if no vent exists. Powered roof mounted ventilators are usually mounted high on the roof. When positioned in the right spot, they can ventilate about 2,500 square feet of attic space.
Powered attic vents can have a number of advantages.
Have a question regarding doors or siding? Please ask any of the roofers from Ideal Construction of Syracuse.
A mechanical system allows the homeowners to have more control over their ventilation. The fans can be turned on to move more air through the home and off to save some energy. Mechanical ventilation systems also improve comfort in the living spaces and improve indoor air quality, as contaminants and allergens can be removed from the circulating air.
Powered attic vents can have some unintended consequences, however. For example, if the home already has passive vents, including soffit and ridge vents, a powered vent may have no impact, as it may draw in air that would have been drawn in by the static vents anyway. Further, many mechanical vents only work when the roof reaches a certain temperature. Temperatures often need to be at least 70 degrees, and some will not work until attic temperatures reach 140 degrees. This is certainly helpful during the summer, but they most likely will not work during the winter.
When attics have adequate ventilation, roofing materials are more likely to last much longer than they would with an inadequate ventilation system. If a passive ventilation system does not work the way it should, a mechanical ventilation system may be a good option.