On Mon, 31 Aug 2015 07:33:04 +0100, ARW wrote:

"Tough Guy no. 1265" wrote in message
news

You should charge extra for testing previous installations.


I do charge for the test.

It should not be compulsory. Your contract is to fit the shower. You should only be responsible for the work that you put into the house.

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Keyboards used to be expensive and beer used to be cheap.
Now beer is expensive and keyboards are cheap.
Conclusion, it's still bad to spill beer on your keyboard.