Attic Temperature In Texas

Attic temperature depends on the amount of solar radiation construction details and the rate of ventilation.

Attic temperature in texas. If your attic is not properly ventilated your cooling costs will not be as low as they should be because your system is constantly running to compensate for the excess heat. On a typical summer day with an outdoor temperature between 90 to 100 degrees the temperature in an attic space without radiant barrier can easily reach 140 degrees. Even with good ventilation they can still reach high temperatures. Calculations indicate that on a july day in texas a ventilation rate of one air change per minute for a typical attic using 95 degree f air will lower the peak attic temperature to about 101 degrees f.

However more often than not. An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate. Overall the plywood sheathing in black shingled roof systems tended to be 10 f to 15 f 5 c to 8 c warmer dur ing the midafternoon of a sunny day than the plywood in comparable white shingled roof systems. If your attic soars above 100 degrees and reaches the 150 mark its time to consult professionals.

Yes as an inspector i have seen them as high as 175 degrees. Hang pencil and paper next to the thermometer and record the outdoor and attic temperatures. The white roof lowered the attic temperature by about 20 f. These images came from a presentation danny parker gave pdf on fsec s cool roof research the third graph shows attic temperatures from the middle of the attic for several different types of roofing as well as a sealed attic.

Real time live attic temperatures in a home in frisco texas with radiantguard radiant barrier attic insulation and ventilation enhancements. In some cases attic temperatures can reach above the 150 degree mark. Providing half air change per minute will lower the temperature to about 106 degrees f. Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures.

The maximum sheathing temperatures recorded were 168 f 76 c for black shingled roofs and 147 f 64 c for white shingled roofs. Hang an outdoor thermometer in your attic making sure its range reaches at least 130 degrees fahrenheit.