Radiant Barrier. When properly done is the #1 Electricity Saving Investment for the Dollar in Texas.
Energy Savings are going to become increasingly important as fuel costs rise do to increased Government Intervention and Regulation, not to mention the trouble in the Middle East.
  Please take a few minutes and view the pages listed as "Energy Savings" with more on each of the products we install.
here is an overview:      (The Photos are interactive - Click to expand.)
Insulation.  Proper evaluation will determine if, how much and of what type of additional insulation is best for your home. We install all types and will can explain to you your options.
Batt insulation
                              Blown 
       Cellulose                            Fiberglass
There is a difference
<         >
Foam. Expensive but effective. There is a time and place for everything.
Closed Cell Foam
Open Cell Foam
Large Area
Yes, there      is a      Difference
  <        > 
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Floor Joists
Walls.
More detail available on all these products. See: ENERGY SAVINGS PAGE 2