Discover The Duro-Last Difference. A DURO-LAST ® CASE STUDY When the Kenowa Hills School District in Grand Rapids, Michigan selected the Duro- Last roofing system to be placed on all nine schools in its district, Building and Grounds Supervisor Harry Kapp knew that their investment would pay off — big time. “We had tried several different roofing systems and nothing worked ” Kapp said. “Plus, I had dealt with the Duro-Last roofing system in previ

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