...We believe ongoing strength in the roofing segment's results coupled with a strong recovery in the insulation and composites segments, have built up a credit cushion, and positioned Owens Corning better for the next downturn in business and housing cycles. We expect the company will end 2021 with adjusted net debt leverage below 2x and it could possibly remain at the lower end of the 2x-3x range over the next two to three years. These credit measures represent a high degree of cushion and therefore we believe Owens Corning's credit quality will be less susceptible to a potential downturn in business conditions. The boom in U.S. residential end markets, both repair and remodel as well as new construction, that initially benefited the roofing segment in the second half of 2020, continue to be a strong tailwind. It has resulted not only in growth for the roofing segment but also led to a rapid recovery in the insulation segment's performance in 2021. Furthermore, as the global economy recovers...