The guy at the shed and one of my DIY books says you need two plastic washers when fitting a tap.
I fitted a tap as described, one plastic washer between tap and top of sink and another between back nut and bottom of sink.
The tap would NOT sit still. I could not stop it moving left or right.
In the end I took off the top plastic washer (between tap and sink top) and did up again. Now the tap stays solid and doesn't move at all. I dumped a lot of water on the tap and not a drop leaked through to the tail (presume the backnut washer got it all).
So why are we supposed to do this? And if I am committing a sin against construction by omitting the top washer what should I do to stop the tap spinning?
I fitted a tap as described, one plastic washer between tap and top of sink and another between back nut and bottom of sink.
The tap would NOT sit still. I could not stop it moving left or right.
In the end I took off the top plastic washer (between tap and sink top) and did up again. Now the tap stays solid and doesn't move at all. I dumped a lot of water on the tap and not a drop leaked through to the tail (presume the backnut washer got it all).
So why are we supposed to do this? And if I am committing a sin against construction by omitting the top washer what should I do to stop the tap spinning?