Succeeded in replacing the leaking copper pipe that was taking water to the rest of my house, replaced it with some plastic pipes using speedfit joints. I know I'm supposed to screw pipe clips to the wall to take the weight of the pipe, but how urgent is it that I do this? In the photo you can see the horizontal plastic pipe sagging down to the floor, which will be putting strain on the speedfit elbow and possibly also on the compression joint above it. Are speedfit joints designed to cope with this? https://1drv.ms/u/s!AmGtZYDBXzj8iL0Qoia6UdGNOsLqAQ?e=4600nQ (the bits of newspaper are just there to help me detect any weep from the joints, none so far).