Rust-Oleum® 310 Roof and foundation coating is a non-fibered asphalt emulsion coating that can be applied as a high quality primer and thin base coat for use with Rust-Oleum® 350 fibered black roof coating and other black roof coatings or as a damp proofer on vertical construction surfaces to protect against moisture penetration. 310 roof and foundation coating fills surface pores and protects against moisture penetration.