Had this very thing this week. woman rings up wanting gutters, soffits and windows done. I quizzed her extensively on the condition of the rest of her home and she was adamant she only wanted gutters, soffits and windows done. All good her call... went and did the job and she rings me up that evening saying that the roughcaste on the siding looks dirty Did I wash that?. ER UM NO madam you were very adamant you didn't want anything other than the gutters , soffits and windows done. Well she says the sidings now look dirty.. Yes madam says I and the concrete block are dirty as well but you didn't want any of that washed only gutters, soffits and windows so that is exactly what I washed for you. SOME PEOPLE!!! Then she asks what would it have cost to wash the whole home. Only $50 more says I.....Then she wanted to know if I could come back and wash just the blocks and sidings for the $50....Well no madam as that will make your windows dirty again and they will need re-doing.... well I'm sure by now you all get the picture on how this ended...She got upset and, of course being a woman, she made it all my fault.