“The new Enhanced Surface of ToughGard and ToughGard R Duct Liner will not absorb moisture like other fiber glass duct liners and has proven to be approximately 40% more moisture resistant than the previous generation of ToughGard duct liner insulation,” said company spokesman Tom Newton. “The new surface helps alleviate some specifiers’ concerns about the moisture that may enter a duct system due to improperly sealed duct joints or poorly installed and maintained duct systems.”

According to Newton, the tougher, smoother, more damage-resistant airstream surface on all ToughGard hvac insulation products provide “exceptional resistance to tearing, puncturing, and surface wear during installation and cleaning with industry-recognized duct cleaning equipment.” Newton claimed Enhanced Surface serves as a barrier against infiltration of dust and dirt into the insulation, improves system efficiency, exhibits low air resistance, and reduces the potential for fiber erosion.