WRC believes in using real-time tested products and roof systems. WRC specializes in "Duro-Last Roof System" for all flat roof solutions since 1997. As a master certified contractor with Duro-Last, WRC has over 100 commercial trouble free labor and material warranties held by Duro-Last Inc. More than one billion square feet of Duro-Last membrane have been installed throughout North America since the late 1970's and many of our oldest roofs are still in service today.