Options for a cooler south side of house
I live close to Phoenix (AZ) where as summer temperature can go as high as 115 degrees and sometimes even higher. My house has a south facing slump block(http://www.airvolblock.com/cm/Masonry/Masonry_Slump.html) wall (28ft X 8ft) that turns into a heat sink as the outside temperature reaches 90 degrees. There is no insulation or drywall whatsoever on the inside. I as looking ideas that can be applied to the outside of the wall so as to reduce the amount of heat that penerates the wall? Thanks!