Redtree Foam Roller Cover Redtree's paint roller covers are deigned for optimal performance in marine paint applications. This short nap foam roller is lint free and appropriate for use with enamels, varnishes, and urethanes.Features: For Smooth Surfaces; Solvent Resistant Phenolic Core; Use with Epoxies, Varnishes and Urethanes; 1/8" Nap;