Back to the drawing board mate.
I let my latest chap go a few weeks ago, similar reasons.
He was fast, always turned up to work but no matter how many times he was told he was still too slap dash.
Had about 6 complaints on work he had done, stuff like missing sills, cobwebs still left, drip marks etc.
We did one house where i watched him clean a window above a conny, gave the window a quick brush and rinse then onto the next......i stood and looked in amazement at the big glaringly obvious bird turn he had totally neglected.
Not easy is it this employing lark
.... im happy on my own at the minute, refining the round and earning not much less than i was with the part time help all without the hassle.
Just think you can have a week or so off at christmas and not have to worry about paying someones wages
I think i will employ again but i want to make the round as cream as possible first