Us-roofing-alex-silva, us roofing alex silva. tosha penalties delinquent one year or longer december 1985 through february 2019 tca 50-3-107(a) states: dba welty construction and roofing : alex opened pro roofing nw in 2004 after years of experience in the industry.. You can form the patterns squares, bond, mosaic, chevron or a herringbone floor. most traditional coatings have a plastic appearance but osmo is a natural coating system that maintains the natural appearance of the timber.