On Wed, 28 Oct 2009 05:04:57 -0700 (PDT), chudford
wrote:

Get the builder back in to put things right or get a specialist
plasterer to refinish the arch.

If, at this stage, she gets a specialist plasterer in she will have to
pay him herself. She cannot deduct his fee from the amount owed to
the original builder without giving him a chance to rectify any error.