Actually.. ..and i believe most of the badminton gyms and places to play, even here in the U.S., are still using regular wood floors-ala multi-purpose gyms/halls. And yes, some of them do need to get resurfaced every so often..Only those full-time baddie clubs can afford the nicer mats...But even w/wooden floors, we'll still taken 'em.. ..heh?? NO LINES at all!!............. ..feel free to add a few more, i did as little as i can..