The guarantee covers manufacturing defects for the advertised period. It does not cover products which fail due to third party issues such as the following examples:
Tap has started to leak and will not shut off.
In this case some debris from the water pipes has entered the tap valve/cartridge and is preventing it from closing fully. This would not be covered under the guarantee as the debris blocking the valve/cartridge has caused the malfunction and could be prevented by flushing out pipework before installation.
The tap has become discoloured.
The tap is positioned near a window where prolonged exposure to sunlight can cause discolouration over a period of time. This will be classed as wear and tear from external influences and not a manufacturing fault as the same tap positioned away from a window would not discolour at the same rate.
For more information please contact our support centre