Hi, We have recently finished a self build project but the upstairs floors are squeaking alot. They are 18mm water resistant chipboard (T&G) glued together as per building regs. Ive tried using screws every 150mm but they keep making a noise. I'm just about to start ripping them up again but I'm not sure what I need to put between the floor and the joists? Is there a stanard rubber type tape? What do other people do. Any help is gratfully recieved as this is just about driving me mad. Thanks.