Basements are also susceptible to plumbing leaks, so we always recommend and install waterproof and antimicrobial types of flooring. For this project we chose Cortec Plus 7" Waterproof Vinyl Planks, which is waterproof and resists mold; if the product is under water, it can be picked up and dried and re-installed. It will not swell when exposed to water and does not expand or contract. Cortec is made with Cork Underlayment for comfort under foot, with good sound insulation. It has a rigid core and can be installed over imperfect subfloors and existing hard surface floors. It is a floating floor with a locking groove and tongue system to connect the panels, completely glue-free. Typically, with floating floors there are often "clapping" sounds when walking on it. Cortec products lay down perfectly and there is no sound. Another great reason for choosing Cortec is that they have a large selection of colors. The homeowners chose the Plank Style Blackstone Oak 7". The boxes came with three different shades for a "natural" wood look. We were careful not to place them in a "pattern" according to shades, to authenticate the natural look throughout.