Hi, as Mick has stated you will find plenty of questions and answers about ironing under the search facility.
We as a company do not do a great deal of ironing, but we have found that it is just as easy to charge on an hourly rate, as to a piece rate. Therefore, we charge £9.00 hr, or part of.
However, with this not bieng the main source of income from our business, I am not 100% sure if this is the most cost effective way, profitable, but it works for us.
Kind regards
Paul