Spruce up your waterproof wood flooring project by adding a beautiful MSIs Quarter Round trim to your space This molding pairs great with a variety of baseboard styles serving as a gap between the floor and the base of the wall Installing a quarter round is an essential material to apply once youve laid your flooring This product is important to install because not only will it make the crown molding stand out but it also helps alleviate debris and dirt from accumulating beneath the base trim.