A 2011 Angie's List award winner for service, Illinois Insulators helps to conserve heat and reduce energy bills through solutions specifically tailored to each home. Carrying heat-trapping wares in a variety of thicknesses and R-values—a measurement of thermal resistance—expert techs find economical ways to safeguard attics, garage ceilings, or crawlspaces against escaping heat. Techs can equip an unfinished basement ceiling with rolls of blanket insulation to soak up fleeing warmth or wield pneumatic tools to fill finished walls with soft tufts of blow-in product. Illinois Insulators helps to educate customers about the intricacies of the heat-trapping arts and can partner with homeowners to remediate sinister spores of mold from attics and floorboards. Home-improvement aficionados can also gild walls in soft, noise-hushing Rockwool acoustic insulation, which is made from rock fibers that soak up disagreeable noises from the TV or a neighbor's rehearsal of his genre-spanning acid-jazz and jackhammer band.