This prevents hot air from seeping into your home and driving up the temperature in the living space which reduces the load on your air conditioner.
Attic ventilation summer.
Just like properly sizing your furnace and air conditioning unit you want precisely the right amount of attic ventilation for your home.
The insulation will resist heat transfer into the house.
That cuts cooling costs and prolongs shingle life.
Roof and soffit vents reduce cooling costs in summer prevents ice dams in the winter extend the life of your shingles and prevent mildew and rot by reducing moisture buildup.
In the summer good attic ventilation reduces heat buildup.
Attic ventilation fans help cool air your attic by pushing out the stifling hot air from inside the attic and bringing in cool air from outside.
Also moisture produced within the home may move into the attic if ceiling vapor barriers are not used.
Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.
Learn how to install them in this article.
In the summer natural air flow in a well vented attic moves super heated air out of the attic protecting roof shingles and removing moisture.
Good ventilation allows the heat and moisture to escape.
The most common mistake homeowners make when installing insulation is to block the flow of air at the eaves.
Intake vents located at the lowest part of the roof under the eaves allow cool.
Ventilation of the home attic is important for two reasons.
Insufficient ventilation can lead to moisture problems during the winter and decreased energy efficiency during the summer but too much ventilation can be just as bad if not worse.
During the summer excess heat that builds up in the attic during the day results in high energy costs for cooling.
In the winter warm moist air seeps into the attic from the living space below.
The goal of roof ventilation is to get fresh relatively cool air into the attic and vent out hot moist air.