Water draining slow any ideas

[Sam boyd]

Hi,my shower is very slow draining.the trap is clear of hair/debris,any idea of what could be the problem?

 

[king of pipes]

Partial blockage of the waste pipe, over time the lower section of pipe builds up a slimey mess of soap scum , body hair ,shampoo , hair conditioner is particularly bad especially the really thick ones, this slows the draining down and eventually your tray will fill up as the water cant get away quick enough , another thing that can happen is where the shower waste pipe enters the soil stack it becomes reduced in size with again a partial blockage of the above , you could try pouring very hot water out of your kettle down there 2 to 3 times then remove your showerhead from its hose and direct the water into the shower trap letting it run for a few minutes, I have had success in the past doing this . Regards Kop