At my house in central Texas, where temperatures can persist at 86 - 110 degrees Fahrenheit, one side is always hot, no matter how long the A/C runs. That attic space is considerably hotter than other locations.
Attic ventilation includes:
- twenty-two 16x8 soffit vents
- two 10' runs of plastic ridge vent
- three stack vents
For better or worse, the ridge vents do not have a filter underneath and are covered with shingles.
According to the web, such as this website, 20' is the minimum requirement and the 22 soffit vents balance appropriately.
Will it help to install additional ridge and soffit vent? or will that disrupt current circulation?
UPDATE: The ridge vents are actually 8 ft. long (not 10') and only 5 ft. of that are actually exposed. 1.5 ft. on either side of the ridge vents are covered over by shingles.