I suspect the thinking was the more the better.
Attic temp vs cooling cost in florida.
There s been some good work done on how the type of roofing affects the attic temperatures and cooling loads in the house.
Install electric ventilators and attic fans which remove hot air from an attic.
But attic ventilation requires a balance.
The question is what is the ideal temperature of an attic when outside temp is 75.
They have thermostats that turn the fan on at a recommended preset temperature of 100 110 degrees.
Alternatively install passive vents such as gable soffit and ridge vents which are openings in the roof that allow hot air to escape.
On one hand the national renewable energy laboratory said attic ventilation reduces attic temperature 10 to 25 degrees and slows the transfer of heat into the living space on the other the florida solar energy center university of central florida found that attics with nominal natural ventilation and r 19 ceiling insulation do not.
Too many attic vents can cause temperature fluctuations in cold weather months and too little venting will not do enough to dissipate heat in the summer.
Ultimately improving your attic s ventilation can have a net positive effect on your cooling bill.
In essence all ventilation is about circulating air to keep it fresh and to reduce moisture levels.
Here are some of the myths and the facts you need to know about attic ventilation.
Blown in insulation is the least expensive option and ideal for older attics.
Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.
The florida solar energy center fsec has done quite a bit of work in this area and even built a test building called the flexible roof facility to study different types of roof and attic assemblies.
Understanding whether your home could benefit from some form of attic ventilation might just be if not a life saver a roof saver.
The typical method for ventilating the attic on an average home is soffit and ridge vent.
If it s 90 degrees outside the attic temperatures shouldn t exceed 110 according to home inspector jamison brown of amerispec home inspection services in poquoson.
Intake vents located at the lowest part of the roof under the eaves allow cool.
The ideal temperature for the attic is whatever the thermostat is set to.
It can cost anywhere from 1 700 to 2 100 or between 1 50 and 3 50 per foot to insulate an attic depending on what insulation material you choose.
Runs up the cooling cost.
I come across many homes that originally had soffit venting and wind turbines at the peak but continuous ridge venting was added later during a re roof.
