Underlayment and Subfloors
The importance of underlayments can’t be stressed enough, regardless of the type of floor you are using. Underlayments are different from subfloors. An underlayment sits between the structural subfloor of the actual foundation and the flooring material. Underlayments are meant to absorb the roughness, or imperfections of subfloors, so that the flooring can be installed on top of a smooth, hard surface that will give the flooring material extra support.
Underlayments for soft flooring like carpet are very different from underlayments for hard surfaces. Be sure to understand the varieties and different uses of underlayments when choosing materials for your floor covering project.