ROCKWOOL Comfortbatt is a semi-rigid stone wool batt insulation for exterior wood and steel stud applications in both new construction and renovations. Rockwool ComfortBatt Thermal Home Insulation keeps your home warm in the winter and cool in the summer for more comfortable living all year round. Installing also helps you save money year after year by reducing the cost of your heating and air conditioning and a house that uses less energy is a house thats easier on the environment. Made from natural stone and recycled slag, ROCKWOOL stone wool is a high-density insulation that will fit snugly into wall cavities and will not slump over time. It also adds superior acoustical performance to wall assemblies and floors and can be used in acoustic applications required by building code. Comfortbatt features a unique flexible edge designed to compress as the batt is installed between the framing members then spring back, expanding the batt against the frame studs to give a complete fill of the wall cavity. This flexibility ensures the expected R-value is achieved and maintained. Non-combustible and fire resistant, Comfortbatt will not develop toxic smoke or promote flame spread, even when exposed directly to a fire. It also offers water and moisture resistance and excellent sound absorbency. Comfortbatt is an effective way to improve a home’s energy efficiency. It is GREENGUARD Gold Certified and contributes to a healthier indoor environment.