GAFincumbentTop incumbent, 8yr relationship, 94% on-time
Owens Corningincumbent6yr incumbent, strong Duration line, 91% on-time
CertainTeedincumbent5yr incumbent, contract expiring — re-evaluate pricing
Atlas Roofingincumbent4yr incumbent, most cost-competitive, growing SE share
TAMKOsuggestedNew challenger — 12% lower on Heritage line in pilot markets
IKO IndustriessuggestedCanadian manufacturer expanding US — aggressive intro pricing