There is an implied warranty that a commissioned work should last a lifetime. There is to be no charge.

Turning down an offer of payment from Irénée du Pont in 1954 for a second mural after one he had finished in 1933 began to deteriorate because of improperly dried paint; as quoted in "How Maxfield Parrish Fulfilled a Warranty" by Seth W. Mattingly in Valley News [Lebanon, NH] (10 February 1982), p.2.