Syracuse Roofing: Article About Roof Ventilation
Turbine vents are a powerful type of passive ventilation that is ideal for use on roofs that have a specific slope. These vents provide a way for hot air to be dissipated from the attic space. Homeowners wondering whether or not one of these turbines would make a good addition to their attics can work with an experienced Syracuse roofing service to learn more about the pros, cons and installation techniques for these venting systems.
The most popular benefit of turbine fans is the fact that they don't rely on electrical power to exhaust hot attic air. This energy efficiency is further enhanced as hot air is released from the attic and lessens the cooling load on the home's central air conditioning system. As hot air within the attic rises, it takes the path of least resistance out of the attic, which is the rooftop opening where the turbine is located. The passing of air moves the fan, which creates a positive feedback loop of further air circulation.
Another benefit of turbines is that they are low maintenance. With no electrical wires, they will not require any repairs of that nature. Only a few mechanical parts may need occasional lubrication. The turbine's blades and base are typically made of stainless steel, which can last for 25 years or longer, even in high humidity environments.
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Turbines also operate nearly silently. Unlike the constant humming of an electric fan or the banging and clattering sounds that are produced by louvered vents, the turbine makes a minimal amount of sound. This can be important to those with bedrooms located underneath the spot where the turbine is situated on the rooftop.
While there are several good reasons to install a turbine fan, there are a few drawbacks to having them installed. Retrofitting a turbine can be a laborious task and requires that roofers cut a hole through the roof. If not properly flashed and sealed, this opening may be a site of future roof leaks. A leak into the home's attic could damage the insulation and cause the turbine's bearings to corrode. Some types of turbine fan materials may be more resistant to corrosion than others.
Another drawback of turbines is that they are less effective when compared to whole house fans. The turbine will only ventilate the attic when the air inside is hot enough to rise to the roof's ridge. Whole house fans offer constant and consistent levels of ventilation, which can be important if there is any wiring or duct work within the attic's space.