Abstract: Rigid floor panels define side edge channels which receive ribs formed on side edges of elastic mats so that the mats can be secured quickly to a floor panel, preferably without the need for adhesives, by engagement of the ribs with the channels. Pull tabs are formed on the mats to further secure the mats to the floor panels by extension through corresponding holes passing through the floor panels. Such pull tabs or some adhesive may be necessary for further securing the mats to the floor panels particularly when the floorboard is formed as two pieces and when the channels are one-sided. The shape and sizing of the ribs are such that they define matted floor corner edges giving the benefits of prior art matted floorboards but with substantially extended life expectancy.