D
defender1007
Decided to change bath taps (Trade taps) for Bristan shower mixer and basin taps (trade taps) for Bristan Quest ceramic taps. Apart from tightness of joints and difficult back nuts all went well. Fitted new 3/4" fibre washers to bath tap connectors and new 1/2" fibre washers to tap connectors. Turned on water. All ok except major leak from Basin cold tap tail connector joint. Unable to pinch up any tighter. Undo tap connecter, clean and fit another new washer. Tighten up, Major leak. Now confused. Decided to double up on fibre wshers(ie 2 washers). Reconnect no leak!! can anyone explain why other 3 taps were ok with one washer and one tap required 2 to seal.