hi, recently had a new boiler installed and the fitter has drilled through the window lintel to put the flue through it. Is this ok? He shrugged off my concerns and was just eager for payment. Other concerns were, proximity to window, leaks I had to pay another plumber to fix after his team told me they were fixed so had 24 hours with no water , putting water pipes in the wrong way round so no hot water for two days and the end of a downspout (replaced by them as they drilled through it) being put on the wrong way so water ran down the yard rather than in the drain right under it !!!