When purchasing a hardwood floor, a lot of attention is paid to what type of floor elements, color, surface texture and a myriad of other facets of hardwood floors as well as their effect on your home. Almost no instructions are provided on how to adequately care for your hardwood floors once they are installed. Hardwood floors are treated with a polyurethane sealant that gives wood floors their luster, protection and overall resilience. The finish of the floor should last around three years, At some point, the floors will begin to dull. This is due to very small dust are constantly getting ground into the finish through everyday use.