5 â or 55â? Extreme Cold or Hot? Our product Sinicon PP can manage without electricity! How?  Sinicon PP is a Heatproofing Plaster Material made from volcanic glass and if you plaster roof, ceiling and wall of the new home/building you can almost stop heat (or Cold) entering to your home (building) interiors. If your Home is old then you can plaster the Roof so that Heat (or Cold) will not get through roof. Huge saving from electricity for heating, air conditioning etc. The one of its kind in the world product in use since 1991.