Making the leading 20 companies in the roof covering, with their 2018 income in countless bucks were: Centimark Corp., $627.6; Flynn Team, $382.1; Baker Roof Co., $277.5; Nations Roofing system, $200.7; Kalkreuth Roof as well as Sheet Steel, $134.2; Ideal Acquiring Providers, Inc., $99.4; Schreiber Corp., $73.0; The Roof Covering Depot, Inc., $65.3; KPost Co.,…