Not all companies can become an Owens Corning Preferred Contractor! When Owens Corning selects a contractor to be a Preferred Contractor, it means, at a minimum, that company has: $1,000,000 in General Liability insurance Holds licenses and other insurances as required by local, state or federal law. A business credit rating that is satisfactory to … Continue reading Total Pro Roofing is an Owens Corning Preferred Contractor