This report summarizes testing undertaken by NCPTT in partnership with the Cane River Creole National Historical Park (CARI) and Quality Finish. In December 2003 meetings were held to discuss applying limewash to the brick cabins at Magnolia Plantation in hopes of prolonging the life of the structures. We developed a study to determine the durability of traditional and modified limewash recipes within certain criteria. We wanted to identify a low cost limewash that would last for five years when applied in approximately three coats. As the project progressed we decided to test limewash on wood, since CARI expressed interest in applying limewash to wood structures at Oakland plantation. Epoxy filler is being used at CARI to help stabilize historic wood tructures, leading us to add epoxy fillers as a third material of study. In collaboration with its partners, NCPTT designed a program of testing for limewash on brick, wood, and epoxy.