not a chance! you know what customers are like they wont factor in the hours driving and diesel into the materials.
i had a customer do this sort of thing a couple of months ago, id quoted £200 labour and materials to paint a bedroom and one wall in a different room, turned out the different room needed all doing, but seeing how id done work for her for ages, i didnt charge extra.
two weeks before i started i took on a labour.
went to the job and the both of us cracked on stayed till about 6pm, getting it all done, she didnt want the coving doing so we left it.
8pm that night her friend who recommended me to her, who give and gets me loads of work phoned me wanting to know how i can charge £200 for a days work, so because ive done loads of work for her friend i explained, £60 for the labour, £60 for materials and diesel, and the rest for me, she wouldnt have, i had to tell her 5 times that ive paid a labour out of it and in the end i said to her when i gave the quote id quoted for two days labour so with two of us there, that equals two days labour and that i hadnt charged for the extras, and when i asked what would of happened if the job had loads of problems and i ended up there for 4 days would she of paid me double? to which so didnt have a answer!!! then complainded about the coving not being done! which id asked the customer if she wanted it doing! so i went back the next day to do the coving, when i went to explain to the customer about the prices so stopped me, she wasnt @rsed about it just her mate with a big nose!!!