What I’ve learned is you can lead a customer to the path of enlightenmemt, show them the reasons they need a 1/8” system and if they don’t want to buy it because it's to much, either have them sign a explicit waiver that puts it all on them, and if they won't sign I don't do the job. The go back costs and the costs of dealing with the clients phone calls, emails and wanting you to come look at their problem all eats up time I could use on a profitable client.
One client I had wanted a solid color epoxy floor. It was for a garage that had a lot of curl in the floor so it was going to have to be a thin film application.
After shotblasting we found that the concrete had multiple cracks everywhere...300+ feet! He refused to entertain having us install a flake system.
Stupidly I moved ahead and we coated the garage floor after filling the cracks. Despite sanding and filling flush, nearly every crack still stood out. We had used a high gloss CRU (again at clients insistence he wanted a gloss floor to show off his car against). We got a change order to sand and re apply satin urethane to try to reduce crack transference.
Fast forward a year plus...client still is complaining about cracks being visible, thin film being vulnerable to dropped tools and other sources of damage.
A reasonable profit has been eaten up with meetings, emails and the miserable sob now wants me to redo his floor for free because I didn't "tell him" about the issues he might have. Thank god I have copies of the emails and listed all the exclusions on the contract/proposal and warranty. Oh yeah, the urethane has turned yellow as he insists on leaving the doors open in a hot sun environment and has cool white bulbs in his lamps...and that's my fault too according to him. Til I showed him on his warranty that yellowed urethane was excluded from any warranty for those two reasons.
If the client has unreasonable expectations for their budget size, don't do the job!