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Do you know that all plumbing works must be completed by a licensed plumber? Any fixtures or pipework that is serviced by the water meter should only be serviced by a licensed plumber. This includes the simple fixes like tap washes and changing a tap.
If something happens in your home that is plumbing related and you try to make an insurance claim the insurance company may reject your claim if you can't prove the work was completed by a licensed plumber. We get many calls to fix items that customers have tried to fix themselves or have had a handyman try to make the repairs. These common mistakes may be of a great cost to you in the future if you are required to make an insurance claim.
Remember for all you plumbing requirements call a licensed plumber.