Attic Temperatures In Florida

And it can cause your air conditioner to work harder than it needs to and send your energy bills soaring with the temperature.

Attic temperatures in florida.

However more often than not. Summer attic air temperatures with old terra cotta colored asphalt shingles peaked at 140 to 145 at 18 above the blown in fiberglass insulation layer at the attic floor. An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate. Parker d sherwin j monitored summer peak attic air temperatures in florida residences presented at the 1998 ashrae annual meeting toronto canada june 20 24 1998.

An unventilated attic can reach 150 degrees in the heat of summer 50 degrees higher than it should be. Summer attic air temperatures with reflective roof peak at or slightly above outdoor air ambient. You ll find separate tables for each region. Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures.

The tables give the normal maximum and minimum temperatures based on weather data collected from 1981 to 2010 by the us national climatic data center. Florida is more than 500 miles as the crow flies from kew west to the georgia state line and more than 200 miles wide. That covers a lot of temperatures on any given day. When those surfaces get wet they rot and mold ensues.

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. If your attic soars above 100 degrees and reaches the 150 mark its time to consult professionals. 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 need powered vent fans. South florida including the florida keys central florida north florida and the florida panhandle.

The views a nd opinions expressed in this article are solely those of the authors and are not intended to represent the views and opinions of the florida solar energy center. Moisture in the attic is drawn to cold surfaces just as it s drawn to your windows. As an apprentice i once put a thermometer in an attic in miami in august and it read 127 deg.