Is my P-Trap defying gravity?

[SuzukiSeijun]

The kitchen sink had been giving some trouble for a while, and chemical cleaners wouldn't clear the blockage. After waiting till all the chemicals had fully drained away, I took the J-Trap out and found a horrendous amount of fat build-up - cleaned it all out and reattached it.

Water won't flow around into the main drain now! There is nothing blocking the whole P-Trap at all, and water goes around it, but won't flow into the main - instead it just all goes back around and backs up through waste and into the basin.

What is happening? Any professionals I talk to say they've never heard of this problem - one incredulously told me my sink was defying gravity!

Please can someone give me advice before I give up and start forking out cash to get someone to look it over?

 

[gassafe]

There seems to be a blockage somewhere & don't keep putting fat down your sink.

 

[SimonJohns]

Get a professional in

 

[snowhead]

Fat has been accumulating in the trap because there is a blockage closer to the main drain causing the flow from the sink to be slow and grease to settle.

 

[SimonJohns]

I thought it was an offence to put fat down a drain

 

[Rickster123]

I thought it was an offence to put fat down a drain

Its also an offence to eat sweetcorn.

 

[Phil]

I had this at a customers the other week. Hubby had been making mullberry wine and forced the pulp down the sink, which of course blocked but only outside where there was a huge pile of fruit pulp resting on the iron grate and an inch or so into the waste pipe.

 

[martyc]

I hope they have you some mulberry wine for your troubles.

 

[snowhead]

I thought it was an offence to put fat down a drain

It's O.K if you have a waste Transfer note,, apparently..