People want a cleaner environment. People also want to save trees. Building with RASTRA is a commitment to the environment for all to see and an example of sustainable living for others to follow.
RASTRA is 85% recycled expanded polystyrene (Styrofoam), would otherwise end up in landfills never to disintegrate. RASTRA buildings reduce energy consumption, and with energy savings comes environmental benefits. Specifically, the reduction of fossil fuels burned to create energy. By reducing energy consumption, we reduce combustion by-products that lead to smog and contribute to global warming. So while your motivation to build with RASTRA may be to reduce energy costs, the end result is that you protect the environment.