I asked Ivan to open the chimney breast to make space for wood stove and log store. Before the chimney breast was open, no one knew what's in it. But my engineer's instinct told me that, among all contenders, Ivan knew what he was talking about the most. On the day of work, he came with the right tools and completed the job in no time. Ivan is a very pleasant person, so is his assistant who kept the work place tidy. Good team. Excellent in my case.