Thermal CorkShield in Denver offers superior attic insulation services that are both environmentally friendly and cost effective. Their insulation product, Denver Cork, is a cellulose insulation material made from ground-up cork bark. It is made from 100% renewable and sustainable resources, making it an ideal solution to bring your Colorado home up to the highest standards of energy efficiency and comfort. Denver Cork insulation acts as a barrier to keep your home cool in summer and warm in winter, thanks to its superior heat retention properties. In addition to reducing energy costs, this insulation material is also pest resistant and improves air quality by helping to reduce airborne pollutants.