Often, we see where additional sections of batt insulation have been laid where there is no insulation in the attic, in hopes this will fix the problem with hot and cold spots. However, it really is not offering any relief for the homeowners. Fiberglass is only effective when enclosed on all sides. And with too little insulation throughout the attic, heat is radiating down in the summer with little resistance and escaping from the rooms below in the winter.