08/03/2017
This temperature was taken two days ago in the attic of a four year old home. The home was well insulated and built to current construction standards, but one thing was keeping this attic hot enough to be the ready temperature of a medium well cooked steak ~ lack of attic ventilation. This home had turbine vents, or "whirly birds", a common form of attic ventilation in this region. However, the vents were seized, not allowing the turbine to turn and draw out hot attic air. And 152° is definitely too hot for any attic.
In hot climates, the primary purpose of attic or roof ventilation is to expel solar heated hot air from the attic to lessen the building cooling load, putting less strain on the air conditioner. Whereas in a cold climate, the main objective of ventilation is to maintain a cold roof temperature to avoid ice dams created by melting snow and to vent any moisture that moves from the conditioned living space to the attic.
Here's a few tips to help your interior ambient air stay cool:
* Avoid storing to many personal belongings
in the attic. Attic spaces can be used for
storage, but building elevated storage
spaces is the way to go.
* If you have an attic access located in the
interior of your home, make sure it is sealed
well to minimize the potential for attic air to
be drawn into the HVAC system.
* Limit the number of holes in interior ceilings,
and if you have canned or recessed lighting,
insure that all air gaps are sealed.
* If your home is a little older, blow in extra
attic ventilation. Floor insulation should
achieve an R-30 value, roughly 12-15
inches of blown-in fiberglass insulation.
This is probably the most cost effective way
to keep attic temperatures from affecting
the interior ambient temperature of your
home.
From turbine venting to ridge venting to gable venting or electric assisted ventilation, attic ventilation has evolved into a science. And now, with the introduction of open and closed cell foam insulation, a new level of attic insulation is giving consumers even more choices. Look, all attics are warm in the south ~ why not do everything you can to stay cool. Periodic inspection of your attic space is vital if you want to expect a lot from your home. Here's a link to more great information
http://www.ashireporter.org/homeinspection/articles/attic-ventilation/1889
And remember...
"You Can't EXPECT what you don't INSPECT "