I need to insulate my attic. I have ice cycles forming each winter all along my gutters each year. I am loosing alot of heat and air. I have forced heat and air through the basement. The attic has the original 1960's insullation in it. Wanting to know if it is better to insulate the floor of the attic or the ceiling. I am wanting to get the best climate control factor. Attic is not used for storage, so a floor is not a factor. Any suggestions would be greatly appreciated.