A substitute for Hardwood Floor Refinishing. When selecting a hardwood floor, a lot of attention is paid to what kind of flooring materials, colour, finish and a variety of other factors of hardwood floors along with their effect on your home. Hardly any instructions are given about how to correctly take care of your hardwood floors once they are installed. Hardwood floors are treated with a polyurethane sealant giving wood flooring their sheen, protection and also overall longevity. The finish of the floors will last around 3 years, Gradually, the floors will begin to dull. This is because very small dust are constantly being ground into the finish.