Help! Shower trap insert causing water to drain slowly

[WattsHN]

Hi

Can anyone offer advice on what might be happening here please?

In our downstairs shower room the water has always flowed fine since we've lived here (2 years) but recently the water has started to drain very slowly and fills up the bottom of the shower to the point where I have to stop mid shower, let the water drain away, then start again.

I've removed drain cover, grating and waste trap to clean (not really anything significant in there as far as I can see) but doesn't make any difference. Was worried it might be something wrong with the saniflo (recently had new replacement but it's not very easy to access to check) but bath seems to still drain fine. Funny thing is that I've now noticed if I take out the trap insert (inner white tube thing) it seems to drain fine! When I put it back in it flows slowly again. Not sure why this would be the case when it's never caused a problem before. When I look into the fitting where the trap insert sits there is a strip of plastic across the bottom that looks a bit knackered but I can't really see how that would make a difference anyway.

Any ideas please???

Grateful for any advice.

Thanks

H

 

[lame plumber]

Don't be daft. I'm not that shallo.....






Ah......

but you are that short

 

[Whyme]

I'm afraid you'll have to bite the bullet and get a plumber in. with it being a wet area shower waste..