Option 1: (good) Insuladd Insulating Additive for paint added to your locally available house paint. Apply 2 coats of paint with Insuladd for best results.
(This is a simple basic system recommended for use where a normal re-painting is planned and where priming or extremes in outdoor temperatures are not a factor, it also provides the ease of choosing any paint color that you desire from your local paint store. You will want to purchase 1 pouch of Insuladd for every gallon of paint you will be using or 1 Jug of Insuladd® for every 5 gallon pail of paint you will be using.)

Insulating Additive Product Information | Pricing/Ordering

Option 2: (best) Insuladd RBC Radiant Barrier Coating as the primer (one coat) then use Insuladd Insulating Additive for paint added to your locally available house paint. This system will not only greatly increase the energy efficiency of your home but will also act as a moisture barrier. This system is recommended for new construction, for painting projects that require the use of a primer. It is especially effective for homes that are older and have poor insulation and for areas where winter and/or summer temperatures are extreme.

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RBC Product Information | Insulating Additive Product Information | Pricing/Ordering